Merge pull request #2995 from facebook/v1.5.2-rc

Zstandard v1.5.2

.circleci/config.yml

@@ -0,0 +1,124 @@
+version: 2
+
+jobs:
+  # the first half of the jobs are in this test
+  short-tests-0:
+    # TODO: Create a small custom docker image with all the dependencies we need
+    #       preinstalled to reduce installation time.
+    docker:
+      - image: fbopensource/zstd-circleci-primary:0.0.1
+    # TODO: Re-enable aarch64 build:
+    #       make aarch64build     && make clean
+    steps:
+      - checkout
+      - run:
+          name: Test
+          command: |
+            ./tests/test-license.py
+            cc -v
+            CFLAGS="-O0 -Werror -pedantic" make allmost; make clean
+            make c99build; make clean
+            make c11build; make clean
+            make -j regressiontest; make clean
+            make shortest; make clean
+            make cxxtest; make clean
+  # the second half of the jobs are in this test
+  short-tests-1:
+    docker:
+      - image: fbopensource/zstd-circleci-primary:0.0.1
+    steps:
+      - checkout
+      - run:
+          name: Test
+          command: |
+            make gnu90build; make clean
+            make gnu99build; make clean
+            make ppc64build V=1; make clean
+            make ppcbuild   V=1; make clean
+            make armbuild   V=1; make clean
+            make -C tests test-legacy test-longmatch; make clean
+            make -C lib libzstd-nomt; make clean
+  # This step should only be run in a cron job
+  regression-test:
+    docker:
+      - image: fbopensource/zstd-circleci-primary:0.0.1
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
+    steps:
+      - checkout
+      # Restore the cached resources.
+      - restore_cache:
+          # We try our best to bust the cache when the data changes by hashing
+          # data.c. If that doesn't work, simply update the version number here
+          # and below. If we fail to bust the cache, the regression testing will
+          # still work, since it has its own stamp, but will need to redownload
+          # everything.
+          keys:
+            - regression-cache-{{ checksum "tests/regression/data.c" }}-v0
+      - run:
+          name: Regression Test
+          command: |
+            make -C programs zstd
+            make -C tests/regression test
+            mkdir -p $CIRCLE_ARTIFACTS
+            ./tests/regression/test                     \
+                --cache  tests/regression/cache         \
+                --output $CIRCLE_ARTIFACTS/results.csv  \
+                --zstd   programs/zstd
+            echo "NOTE: The new results.csv is uploaded as an artifact to this job"
+            echo "      If this fails, go to the Artifacts pane in CircleCI, "
+            echo "      download /tmp/circleci-artifacts/results.csv, and if they "
+            echo "      are still good, copy it into the repo and commit it."
+            echo "> diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv"
+            diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv
+      # Only save the cache on success (default), since if the failure happened
+      # before we stamp the data cache, we will have a bad cache for this key.
+      - save_cache:
+          key: regression-cache-{{ checksum "tests/regression/data.c" }}-v0
+          paths:
+            - tests/regression/cache
+      - store_artifacts:
+          path: /tmp/circleci-artifacts
+
+
+workflows:
+  version: 2
+  commit:
+    jobs:
+      # Run the tests in parallel
+      - short-tests-0
+      - short-tests-1
+      - regression-test
+
+  nightly:
+    triggers:
+      - schedule:
+          cron: "0 0 * * *"
+          filters:
+            branches:
+              only:
+                - release
+                - dev
+                - master
+    jobs:
+      # Run daily regression tests
+      - regression-test
+
+
+
+  # Longer tests
+    #- make -C tests test-zstd-nolegacy && make clean
+    #- pyenv global 3.4.4; make -C tests versionsTest && make clean
+    #- make zlibwrapper         && make clean
+    #- gcc -v; make -C tests test32 MOREFLAGS="-I/usr/include/x86_64-linux-gnu" && make clean
+    #- make uasan               && make clean
+    #- make asan32              && make clean
+    #- make -C tests test32 CC=clang MOREFLAGS="-g -fsanitize=address -I/usr/include/x86_64-linux-gnu"
+  # Valgrind tests
+    #- CFLAGS="-O1 -g" make -C zlibWrapper valgrindTest && make clean
+    #- make -C tests valgrindTest && make clean
+  # ARM, AArch64, PowerPC, PowerPC64 tests
+    #- make ppctest             && make clean
+    #- make ppc64test           && make clean
+    #- make armtest             && make clean
+    #- make aarch64test         && make clean

.circleci/images/primary/Dockerfile

@@ -0,0 +1,9 @@
+FROM circleci/buildpack-deps:bionic
+
+RUN sudo dpkg --add-architecture i386
+RUN sudo apt-get -y -qq update
+RUN sudo apt-get -y install \
+    gcc-multilib-powerpc-linux-gnu gcc-arm-linux-gnueabi \
+    libc6-dev-armel-cross gcc-aarch64-linux-gnu libc6-dev-arm64-cross \
+    libc6-dev-ppc64-powerpc-cross zstd gzip coreutils \
+    libcurl4-openssl-dev

.cirrus.yml

@@ -1,9 +1,11 @@
 task:
-  name: FreeBSD (make check)
+  name: FreeBSD (shortest)
   freebsd_instance:
     matrix:
-      image_family: freebsd-15-0-amd64-zfs
+      image_family: freebsd-12-2
+      # The stable 11.3 image causes "Agent is not responding" so use a snapshot
+      image_family: freebsd-11-3-snap
   install_script: pkg install -y gmake coreutils
   script: |
     MOREFLAGS="-Werror" gmake -j all
-    gmake check
+    gmake shortest

.github/ISSUE_TEMPLATE/bug_report.md

@@ -26,8 +26,8 @@ If applicable, add screenshots and charts to help explain your problem.
 **Desktop (please complete the following information):**
  - OS: [e.g. Mac]
  - Version [e.g. 22]
- - Compiler [e.g. gcc]
- - Flags [e.g. O2]
+ - Compiler [e.g gcc]
+ - Flags [e.g O2]
  - Other relevant hardware specs [e.g. Dual-core]
  - Build system [e.g. Makefile]
 

.github/dependabot.yml

@@ -1,6 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "monthly"

.github/workflows/android-ndk-build.yml

@@ -1,50 +0,0 @@
-name: Android NDK Build
-
-on:
-  pull_request:
-    branches: [ dev, release, actionsTest ]
-  push:
-    branches: [ actionsTest, '*ndk*' ]
-
-permissions: read-all
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-
-    - name: Set up JDK 17
-      uses: actions/setup-java@03ad4de0992f5dab5e18fcb136590ce7c4a0ac95 # v5.6.0
-      with:
-        java-version: '17'
-        distribution: 'temurin'
-
-    - name: Setup Android SDK
-      uses: android-actions/setup-android@651bceb6f9ca583f16b8d75b62c36ded2ae6fc9c # v4.0.0
-
-    - name: Install Android NDK
-      run: |
-        sdkmanager --install "ndk;27.0.12077973"
-        echo "ANDROID_NDK_HOME=$ANDROID_SDK_ROOT/ndk/27.0.12077973" >> $GITHUB_ENV
-
-    - name: Build with NDK
-      run: |
-        export PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin:$PATH
-        make CC=aarch64-linux-android21-clang \
-             AR=llvm-ar \
-             RANLIB=llvm-ranlib \
-             STRIP=llvm-strip
-
-    - name: Build with CMake and NDK
-      run: |
-        mkdir -p build-android
-        cd build-android
-        cmake --version
-        cmake ../build/cmake \
-          -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake \
-          -DANDROID_ABI=arm64-v8a \
-          -DANDROID_PLATFORM=android-21 \
-          -DCMAKE_BUILD_TYPE=Release
-        cmake --build . --parallel

.github/workflows/cmake-tests.yml

@@ -1,168 +0,0 @@
-name: cmake-tests
-# CMake-specific build and test workflows
-# This workflow validates zstd builds across different CMake configurations,
-# platforms, and edge cases to ensure broad compatibility.
-
-concurrency:
-  group: cmake-${{ github.ref }}
-  cancel-in-progress: true
-
-on:
-  pull_request:
-    branches: [ dev, release, actionsTest ]
-
-permissions: read-all
-
-env:
-  # Centralized test timeouts for consistency
-  QUICK_TEST_TIME: "30s"
-  STANDARD_TEST_TIME: "1mn"
-  # Common CMake flags
-  COMMON_CMAKE_FLAGS: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-
-jobs:
-  # Basic cmake build using the root CMakeLists.txt
-  # Provides a lightweight sanity check that the top-level project config builds
-  # with the default Unix Makefiles generator driven purely through cmake commands
-  cmake-root-basic:
-    name: "CMake Root Build"
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Configure (Root)
-      run: |
-        cmake -S . -B cmake-build -DCMAKE_BUILD_TYPE=Release ${{ env.COMMON_CMAKE_FLAGS }}
-    - name: Build (Root)
-      run: |
-        cmake --build cmake-build --config Release
-
-  # Ubuntu-based cmake build using make wrapper
-  # This test uses the make-driven cmake build to ensure compatibility
-  # with the existing build system integration
-  cmake-ubuntu-basic:
-    name: "CMake build using make wrapper"
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Install dependencies
-      run: |
-        sudo apt install liblzma-dev  # Required for compression algorithms
-    - name: CMake build and test via make
-      run: |
-        # Use make wrapper for cmake build with quick test timeouts
-        FUZZERTEST=-T${{ env.STANDARD_TEST_TIME }} ZSTREAM_TESTTIME=-T${{ env.STANDARD_TEST_TIME }} make cmakebuild V=1
-
-  # Cross-platform cmake build with edge case: source paths containing spaces
-  # This test ensures cmake handles filesystem paths with spaces correctly
-  # across different operating systems and build generators
-  cmake-cross-platform-spaces:
-    name: "CMake Cross-Platform (Spaces in Path)"
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        include:
-          - os: ubuntu-latest
-            generator: "Unix Makefiles"
-            name: "Linux"
-          - os: windows-latest
-            generator: "NMake Makefiles"
-            name: "Windows NMake"
-          - os: macos-latest
-            generator: "Unix Makefiles"
-            name: "macOS"
-    env:
-      SRC_DIR: "source directory with spaces"
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      with:
-        path: "${{ env.SRC_DIR }}"
-    - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
-      if: ${{ matrix.generator == 'NMake Makefiles' }}
-    - name: "CMake build and install (${{ matrix.name }})"
-      run: |
-        # Test Release build with installation to verify packaging
-        cmake -S "${{ env.SRC_DIR }}/build/cmake" -B build -DBUILD_TESTING=ON -G "${{ matrix.generator }}" -DCMAKE_BUILD_TYPE=Release --install-prefix "${{ runner.temp }}/install"
-        cmake --build build --config Release
-        cmake --install build --config Release
-
-  # Windows-specific cmake testing with Visual Studio 2022
-  # Tests multiple generators and toolchains to ensure broad Windows compatibility
-  # including MSVC (x64, Win32, ARM64), MinGW, and Clang-CL with various architectures and optimizations
-  cmake-windows-comprehensive:
-    name: "CMake Windows VS2022 (${{ matrix.name }})"
-    runs-on: ${{ matrix.runner }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - generator: "Visual Studio 17 2022"
-            flags: "-A x64"
-            name: "MSVC x64"
-            runner: "windows-2022"
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-          - generator: "Visual Studio 17 2022"
-            flags: "-A Win32"
-            name: "MSVC Win32"
-            runner: "windows-2022"
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-          - generator: "Visual Studio 17 2022"
-            flags: "-A x64"
-            name: "MSVC x64 (No ZSTD_BUILD_TESTS)"
-            runner: "windows-2022"
-            # Intentionally omit ZSTD_BUILD_TESTS to reproduce the CXX language configuration bug
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON"
-          - generator: "Visual Studio 17 2022"
-            flags: "-A ARM64"
-            name: "MSVC ARM64"
-            runner: "windows-11-arm"  # githuh runner for WOA instance
-          - generator: "MinGW Makefiles"
-            flags: ""
-            name: "MinGW"
-            runner: "windows-2022"
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-          - generator: "Visual Studio 17 2022"
-            flags: "-T ClangCL"
-            name: "Clang-CL"
-            runner: "windows-2022"
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-          - generator: "Visual Studio 17 2022"
-            flags: "-T ClangCL -A x64 -DCMAKE_C_FLAGS=/arch:AVX2"
-            name: "Clang-CL AVX2"
-            runner: "windows-2022"
-            cmake_extra_flags: "-DCMAKE_COMPILE_WARNING_AS_ERROR=ON -DZSTD_BUILD_TESTS=ON"
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Add MSBuild to PATH
-      uses: microsoft/setup-msbuild@30375c66a4eea26614e0d39710365f22f8b0af57 # tag=v3.0.0
-    - name: "Configure CMake (${{ matrix.name }})"
-      run: |
-        cd build\cmake
-        mkdir build
-        cd build
-        cmake.exe -G "${{matrix.generator}}" ${{matrix.flags}} -DCMAKE_BUILD_TYPE=Debug ${{ matrix.cmake_extra_flags }} -DZSTD_ZSTREAM_FLAGS=-T${{ env.QUICK_TEST_TIME }} -DZSTD_FUZZER_FLAGS=-T${{ env.QUICK_TEST_TIME }} -DZSTD_FULLBENCH_FLAGS=-i0 ..
-    - name: "Build (${{ matrix.name }})"
-      run: |
-        cd build\cmake\build
-        cmake.exe --build .
-    - name: "Test (${{ matrix.name }})"
-      run: |
-        cd build\cmake\build
-        ctest.exe -V -C Debug
-
-  # macOS ARM64 (Apple Silicon) specific cmake testing
-  # Validates zstd builds and runs correctly on Apple Silicon architecture
-  # Uses native ARM64 hardware for optimal performance and compatibility testing
-  cmake-macos-arm64:
-    name: "CMake macOS ARM64 (Apple Silicon)"
-    runs-on: macos-14  # ARM64 runner
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: "CMake build and test (ARM64)"
-      run: |
-        # Configure and build with ARM64-specific optimizations
-        cd build/cmake
-        mkdir build
-        cd build
-        cmake -DCMAKE_BUILD_TYPE=Release ${{ env.COMMON_CMAKE_FLAGS }} -DZSTD_ZSTREAM_FLAGS=-T${{ env.QUICK_TEST_TIME }} -DZSTD_FUZZER_FLAGS=-T${{ env.QUICK_TEST_TIME }} -DZSTD_FULLBENCH_FLAGS=-i1 ..
-        make -j$(sysctl -n hw.ncpu)
-        ctest -V

.github/workflows/commit.yml

@@ -1,104 +0,0 @@
-name: facebook/zstd/commit
-on:
-  push:
-    branches:
-    - dev
-  pull_request:
-    branches:
-    - dev
-
-permissions: read-all
-
-jobs:
-  short-tests-0:
-    runs-on: ubuntu-latest
-    services:
-      docker:
-        image: fbopensource/zstd-circleci-primary:0.0.1
-        options: --entrypoint /bin/bash
-    steps:
-    - uses: actions/checkout@v6.0.2
-    - name: Install Dependencies
-      run: |
-        sudo apt-get update
-        sudo apt-get install libcurl4-gnutls-dev
-    - name: Test
-      run: |
-        ./tests/test-license.py
-        cc -v
-        CFLAGS="-O0 -Werror -pedantic" make allmost; make clean
-        make c99build; make clean
-        make c11build; make clean
-        make -j regressiontest; make clean
-        make check; make clean
-        make cxxtest; make clean
-
-  short-tests-1:
-    runs-on: ubuntu-latest
-    services:
-      docker:
-        image: fbopensource/zstd-circleci-primary:0.0.1
-        options: --entrypoint /bin/bash
-    steps:
-    - uses: actions/checkout@v6.0.2
-    - name: Install Dependencies
-      run: |
-        sudo apt-get update
-        sudo apt-get install gcc-powerpc-linux-gnu gcc-arm-linux-gnueabi gcc-aarch64-linux-gnu libc6-dev-ppc64-powerpc-cross libcurl4-gnutls-dev lib64gcc-13-dev-powerpc-cross
-    - name: gnu90 build
-      run: make gnu90build && make clean
-    - name: gnu99 build
-      run: make gnu99build && make clean
-    - name: ppc64 build
-      run: make ppc64build V=1 && make clean
-    - name: ppc build
-      run: make ppcbuild V=1 && make clean
-    - name: arm build
-      run: make armbuild V=1 && make clean
-    - name: aarch64 build
-      run: make aarch64build V=1 && make clean
-    - name: test-legacy
-      run: make -C tests test-legacy V=1 && make clean
-    - name: test-longmatch
-      run: make -C tests test-longmatch V=1 && make clean
-    - name: libzstd-nomt build
-      run: make -C lib libzstd-nomt V=1 && make clean
-
-  regression-test:
-    runs-on: ubuntu-latest
-    services:
-      docker:
-        image: fbopensource/zstd-circleci-primary:0.0.1
-        options: --entrypoint /bin/bash
-    env:
-      CIRCLE_ARTIFACTS: "/tmp/circleci-artifacts"
-    steps:
-    - uses: actions/checkout@v6.0.2
-    - name: restore_cache
-      uses: actions/cache@v6
-      with:
-        key: regression-cache-{{ checksum "tests/regression/data.c" }}-v0
-        path: tests/regression/cache
-        restore-keys: regression-cache-{{ checksum "tests/regression/data.c" }}-v0
-    - name: Install Dependencies
-      run: |
-        sudo apt-get update
-        sudo apt-get install libcurl4-gnutls-dev
-    - name: Regression Test
-      run: |
-        make -C programs zstd
-        make -C tests/regression test
-        mkdir -p $CIRCLE_ARTIFACTS
-        ./tests/regression/test                     \
-            --cache  tests/regression/cache         \
-            --output $CIRCLE_ARTIFACTS/results.csv  \
-            --zstd   programs/zstd
-        echo "NOTE: The new results.csv is uploaded as an artifact to this job"
-        echo "      If this fails, go to the Artifacts pane in CircleCI, "
-        echo "      download /tmp/circleci-artifacts/results.csv, and if they "
-        echo "      are still good, copy it into the repo and commit it."
-        echo "> diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv"
-        diff tests/regression/results.csv $CIRCLE_ARTIFACTS/results.csv
-    - uses: actions/upload-artifact@v7.0.1
-      with:
-        path: "/tmp/circleci-artifacts"

.github/workflows/dev-long-tests.yml

@@ -1,5 +1,5 @@
 name: dev-long-tests
-# Tests generally longer than 10mn
+# Tests longer than 10mn
 
 concurrency:
   group: long-${{ github.ref }}
@@ -9,131 +9,72 @@ on:
   pull_request:
     branches: [ dev, release, actionsTest ]
 
-permissions: read-all
-
 jobs:
-  # lasts ~7mn
   make-all:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: make all
       run: make all
 
-  # lasts ~19mn
+  # lasts ~24mn
   make-test:
     runs-on: ubuntu-latest
     env:
       DEVNULLRIGHTS: 1
       READFROMBLOCKDEVICE: 1
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: make test
-      run: |
-        make test
-        make -j zstd
-        ./tests/test_process_substitution.bash ./zstd
-
-  # lasts ~16mn
-  make-test-macos:
-    runs-on: macos-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: make test on macos
       run: make test
 
-  # lasts ~10mn
-  make-test-32bit:
-    runs-on: ubuntu-latest
-    env:
-      DEVNULLRIGHTS: 1
-      READFROMBLOCKDEVICE: 1
+  # lasts ~26mn
+  make-test-osx:
+    runs-on: macos-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: make test # note: `make -j test success` seems to require a clean state
-      run: |
-        sudo apt-get -qqq update
-        make libc6install
-        make clean
-        CFLAGS="-m32 -O2" make -j test V=1
+    - uses: actions/checkout@v2
+    - name: OS-X test
+      run: make test # make -c lib all doesn't work because of the fact that it's not a tty
 
-  # lasts ~7mn
-  test-largeDictionary:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: largeDictionary
-      run: |
-        CFLAGS="-Werror -O3" make -j -C tests test-largeDictionary
-
-  # lasts ~9mn
   no-intrinsics-fuzztest:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: no intrinsics fuzztest
       run: MOREFLAGS="-DZSTD_NO_INTRINSICS" make -C tests fuzztest
 
-  # lasts ~8mn
   tsan-zstreamtest:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: thread sanitizer zstreamtest
       run: CC=clang ZSTREAM_TESTTIME=-T3mn make tsan-test-zstream
 
-  uasan-zstreamtest:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: ub + address sanitizer on zstreamtest
-      run: CC=clang make uasan-test-zstream
-
-  # lasts ~11mn
+  # lasts ~15mn
   tsan-fuzztest:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: thread sanitizer fuzztest
       run: CC=clang make tsan-fuzztest
 
-  big-tests-zstreamtest32:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: zstream tests in 32bit mode, with big tests
-      run: |
-        sudo apt-get -qqq update
-        make libc6install
-        CC=clang make -C tests test-zstream32 FUZZER_FLAGS="--big-tests"
-
-  # lasts ~13mn
+  # lasts ~23mn
   gcc-8-asan-ubsan-testzstd:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: gcc-8 + ASan + UBSan + Test Zstd
-      # See https://askubuntu.com/a/1428822
       run: |
-        echo "deb [arch=amd64] http://archive.ubuntu.com/ubuntu focal main universe" | sudo tee -a /etc/apt/sources.list
         sudo apt-get -qqq update
         make gcc8install
         CC=gcc-8 make -j uasan-test-zstd </dev/null V=1
 
-  clang-asan-ubsan-testzstd:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: clang + ASan + UBSan + Test Zstd
-      run: CC=clang make -j uasan-test-zstd </dev/null V=1
-
   gcc-asan-ubsan-testzstd-32bit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: ASan + UBSan + Test Zstd, 32bit mode
       run: |
-        sudo apt-get -qqq update
         make libc6install
         make -j uasan-test-zstd32 V=1
 
@@ -144,110 +85,60 @@ jobs:
   gcc-8-asan-ubsan-fuzz:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: gcc-8 + ASan + UBSan + Fuzz Test
-      # See https://askubuntu.com/a/1428822
       run: |
-        echo "deb [arch=amd64] http://archive.ubuntu.com/ubuntu focal main universe" | sudo tee -a /etc/apt/sources.list
-        sudo apt-get -qqq update
         make gcc8install
         CC=gcc-8 FUZZER_FLAGS="--long-tests" make clean uasan-fuzztest
 
-  clang-asan-ubsan-fuzz:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: clang + ASan + UBSan + Fuzz Test
-      run: CC=clang FUZZER_FLAGS="--long-tests" make clean uasan-fuzztest
-
   gcc-asan-ubsan-fuzz32:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: ASan + UBSan + Fuzz Test 32bit
       run: |
-        sudo apt-get -qqq update
         make libc6install
         CFLAGS="-O3 -m32" FUZZER_FLAGS="--long-tests" make uasan-fuzztest
 
-  clang-asan-fuzz32:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: clang + ASan + Fuzz Test 32bit
-      run: |
-        sudo apt-get -qqq update
-        make libc6install
-        CC=clang CFLAGS="-O3 -m32" FUZZER_FLAGS="--long-tests" make asan-fuzztest
-
-# The following test seems to have issues on github CI specifically,
-# it does not provide the `__mulodi4` instruction emulation
-# required for signed 64-bit multiplication.
-# Replaced by asan-only test (above)
-#
-#  clang-asan-ubsan-fuzz32:
-#    runs-on: ubuntu-20.04
-#    steps:
-#    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-#    - name: clang + ASan + UBSan + Fuzz Test 32bit
-#      run: |
-#        sudo apt-get -qqq update
-#        make libc6install
-#        CC=clang CFLAGS="-O3 -m32" FUZZER_FLAGS="--long-tests" make uasan-fuzztest
-
   asan-ubsan-regression:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: ASan + UBSan + Regression Test
       run: make -j uasanregressiontest
 
-  clang-asan-ubsan-regression:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: clang + ASan + UBSan + Regression Test
-      run: CC=clang make -j uasanregressiontest
-
   msan-regression:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: MSan + Regression Test
       run: make -j msanregressiontest
 
-  clang-msan-fuzz-unoptimized:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: clang + MSan + Fuzz Test
-        run: |
-          sudo apt-get -qqq update
-          sudo apt-get install clang
-          CC=clang MOREFLAGS="-O0" make clean msan-fuzztest
-
   clang-msan-fuzz:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: clang + MSan + Fuzz Test
       run: |
         sudo apt-get -qqq update
         sudo apt-get install clang
         CC=clang FUZZER_FLAGS="--long-tests" make clean msan-fuzztest
 
+  # lasts ~24mn
   clang-msan-testzstd:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: clang + MSan + Test Zstd
       run: |
-        CC=clang make -j msan-test-zstd HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=0 V=1
+        sudo apt-get update
+        sudo apt-get install clang
+        CC=clang make msan-test-zstd HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=0 V=1
 
   armfuzz:
       runs-on: ubuntu-latest
       steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+      - uses: actions/checkout@v2
       - name: Qemu ARM emulation + Fuzz Test
         run: |
           sudo apt-get -qqq update
@@ -257,42 +148,67 @@ jobs:
   valgrind-fuzz-test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: valgrind + fuzz test stack mode    # ~ 7mn
       shell: 'script -q -e -c "bash {0}"'
       run: |
-        sudo apt-get -qqq update
         make valgrindinstall
-        make -C tests test-valgrind
+        make -C tests valgrindTest
         make clean
         make -C tests test-fuzzer-stackmode
 
   mingw-long-test:
     runs-on: windows-latest
-    defaults:
-      run:
-        shell: msys2 {0}
+    strategy:
+      fail-fast: false
+      matrix:
+        include: [
+          { compiler: clang, platform: x64, action: build, script: "MOREFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion -Wno-unused-command-line-argument -Wno-implicit-int-float-conversion' make -j allzstd V=1"},
+          { compiler: gcc, platform: x64, action: test, script: ""},
+        ]
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - uses: msys2/setup-msys2@66cd2cce69caa17b53920067426061ca1de3a884 # tag=v2.32.0
-      with:
-        msystem: MINGW64
-        install: make
-        update: true
-    # Based on https://ariya.io/2020/07/on-github-actions-with-msys2
-    - name: install mingw gcc
-      run: pacman --noconfirm -S gcc
-    - name: MINGW64 gcc fuzztest
+    - uses: actions/checkout@v2
+    - name: Mingw long test
       run: |
-        export CC="gcc"
-        export CXX="g++"
-        export FUZZERTEST="-T2mn"
-        export ZSTREAM_TESTTIME="-T2mn"
-        echo "Testing $CC $CXX MINGW64"
-        make -v
-        $CC --version
-        $CXX --version
-        make -C tests fuzztest
+        $env:PATH_ORIGINAL = $env:PATH
+        $env:PATH_MINGW32 = "C:\msys64\mingw32\bin"
+        $env:PATH_MINGW64 = "C:\msys64\mingw64\bin"
+        COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw32\bin\make.exe
+        COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw64\bin\make.exe
+        IF ("${{matrix.platform}}" -eq "x64")
+        {
+            $env:PATH = $env:PATH_MINGW64 + ";" + $env:PATH_ORIGINAL
+        }
+        ELSEIF ("${{matrix.platform}}" -eq "x86")
+        {
+            $env:PATH = $env:PATH_MINGW32 + ";" + $env:PATH_ORIGINAL
+        }
+        IF ("${{matrix.action}}" -eq "build")
+        {
+          make -v
+          sh -c "${{matrix.compiler}} -v"
+          ECHO "Building zlib to static link"
+          $env:CC = "${{matrix.compiler}}"
+          sh -c "cd .. && git clone --depth 1 --branch v1.2.11 https://github.com/madler/zlib"
+          sh -c "cd ../zlib && make -f win32/Makefile.gcc libz.a"
+          ECHO "Building zstd"
+          $env:CPPFLAGS = "-I../../zlib"
+          $env:LDFLAGS = "../../zlib/libz.a"
+          sh -c "${{matrix.script}}"
+        }
+        ELSEIF ("${{matrix.action}}" -eq "test")
+        {
+            ECHO "Testing ${{matrix.compiler}} ${{matrix.platform}}"
+            $env:CC = "gcc"
+            $env:CXX = "g++"
+            MKDIR build\cmake\build
+            CD build\cmake\build
+            $env:FUZZERTEST = "-T2mn"
+            $env:ZSTREAM_TESTTIME = "-T2mn"
+            cmake -G "Visual Studio 14 2015 Win64" ..
+            cd ..\..\..
+            make clean
+        }
 
   # lasts ~20mn
   oss-fuzz:
@@ -317,7 +233,7 @@ jobs:
         dry-run: false
         sanitizer: ${{ matrix.sanitizer }}
     - name: Upload Crash
-      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # tag=v7.0.1
+      uses: actions/upload-artifact@v1
       if: failure() && steps.build.outcome == 'success'
       with:
         name: ${{ matrix.sanitizer }}-artifacts

.github/workflows/dev-short-tests.yml

@@ -10,72 +10,73 @@ on:
   pull_request:
     branches: [ dev, release, actionsTest ]
 
-permissions: read-all
-
 jobs:
   linux-kernel:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: linux kernel, library + build + test
       run: make -C contrib/linux-kernel test CFLAGS="-Werror -Wunused-const-variable -Wunused-but-set-variable"
 
   benchmarking:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: make benchmarking
       run: make benchmarking
 
   check-32bit: # designed to catch https://github.com/facebook/zstd/issues/2428
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: make check on 32-bit
       run: |
         sudo apt update
         APT_PACKAGES="gcc-multilib" make apt-install
         CFLAGS="-m32 -O1 -fstack-protector" make check V=1
-        CFLAGS="-m32 -O1 -fstack-protector" make V=1 -C tests test-cli-tests
 
-  build-c89:
+  check-x32:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: ensure zstd can be built with c89/c90 compilers (+ long long support + variadic macros)
+    - uses: actions/checkout@v2
+    - name: make check on x32 ABI # https://en.wikipedia.org/wiki/X32_ABI
+      env:
+        CHECK_CONSTRAINED_MEM: true
       run: |
-        make c89build V=1
-
-  build-zstd-dll:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: build zstd bin against a dynamic lib (debuglevel for more dependencies)
-      run: |
-        make -C lib lib-mt-release
-        DEBUGLEVEL=2 make -C programs zstd-dll
+        sudo apt update
+        APT_PACKAGES="gcc-multilib" make apt-install
+        CFLAGS="-mx32 -O1 -fstack-protector" make check V=1
 
   gcc-7-libzstd:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: gcc-7 + libzstdmt compilation
-      # See https://askubuntu.com/a/1428822
       run: |
-        echo "deb [arch=amd64] http://archive.ubuntu.com/ubuntu focal main universe" | sudo tee -a /etc/apt/sources.list
         sudo apt-get -qqq update
         make gcc7install
         CC=gcc-7 CFLAGS=-Werror make -j all
         make clean
         LDFLAGS=-Wl,--no-undefined make -C lib libzstd-mt
 
-    # candidate test (for discussion) : underlink test
+    # candidate test (to check) : underlink test
     # LDFLAGS=-Wl,--no-undefined : will make the linker fail if dll is underlinked
 
+  cmake-build-and-test-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: cmake build and test check
+      run: |
+        FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
+        cp -r ./ "../zstd source"
+        cd "../zstd source"
+        FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
+
   cpp-gnu90-c99-compatibility:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: C++, gnu90 and c99 compatibility
       run: |
         make cxxtest
@@ -89,7 +90,7 @@ jobs:
   mingw-cross-compilation:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: mingw cross-compilation
       run: |
         # sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix; (doesn't work)
@@ -100,7 +101,7 @@ jobs:
   armbuild:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: ARM Build Test
       run: |
         sudo apt-get -qqq update
@@ -110,7 +111,7 @@ jobs:
   bourne-shell:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: Bourne shell compatibility (shellcheck)
       run: |
         wget https://github.com/koalaman/shellcheck/releases/download/v0.7.1/shellcheck-v0.7.1.linux.x86_64.tar.xz
@@ -120,22 +121,21 @@ jobs:
   zlib-wrapper:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: install valgrind
+    - uses: actions/checkout@v2
+    - name: zlib wrapper test
       run: |
         sudo apt-get -qqq update
-        make valgrindinstall V=1
-    - name: zlib wrapper test
-      run: make -C zlibWrapper test V=1
-    - name: zlib wrapper test under valgrind
-      run: make -C zlibWrapper test-valgrind V=1
+        make valgrindinstall
+        make -C zlibWrapper test
+        make -C zlibWrapper valgrindTest
 
   lz4-threadpool-libs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: LZ4, thread pool, and libs build testslib wrapper test
       run: |
+        make lz4install
         make -C tests test-lz4
         make check < /dev/null | tee   # mess with lz4 console detection
         make clean
@@ -143,74 +143,30 @@ jobs:
         make clean
         bash tests/libzstd_builds.sh
 
-  gcc-make-all-avx2:
+  gcc-make-tests-32bit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Make all, with AVX2
-      run: |
-        sudo apt-get -qqq update
-        make libc6install
-        CFLAGS="-Werror -mavx2" make -j all
-
-  gcc-make-all-32bit:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: Make all, 32bit mode
       run: |
         sudo apt-get -qqq update
         make libc6install
         CFLAGS="-Werror -m32" make -j all32
 
-  gcc-make-all-32bit-avx2:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Make all, 32bit + AVX2 mode
-      run: |
-        sudo apt-get -qqq update
-        make libc6install
-        CPPFLAGS="-DSTATIC_BMI2=1" CFLAGS="-Werror -m32 -mavx2 -mbmi2" make -j all32
-
-
   gcc-8-make:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+      - uses: actions/checkout@v2
       - name: gcc-8 build
-        # See https://askubuntu.com/a/1428822
         run: |
-          echo "deb [arch=amd64] http://archive.ubuntu.com/ubuntu focal main universe" | sudo tee -a /etc/apt/sources.list
           sudo apt-get -qqq update
           make gcc8install
           CC=gcc-8 CFLAGS="-Werror" make -j all
 
-  make-external-compressors:
-    strategy:
-      matrix:
-        include:
-          - name: "no external compressors"
-            flags: "HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=0"
-          - name: "only zlib"
-            flags: "HAVE_ZLIB=1 HAVE_LZ4=0 HAVE_LZMA=0"
-          - name: "only lz4"
-            flags: "HAVE_ZLIB=0 HAVE_LZ4=1 HAVE_LZMA=0"
-          - name: "only lzma"
-            flags: "HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=1"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Build with ${{matrix.name}}
-        run: |
-          sudo apt install liblzma-dev
-          ${{matrix.flags}} make zstd
-
-
   implicit-fall-through:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+      - uses: actions/checkout@v2
       - name: -Wimplicit-fallthrough build
         run: |
           make clean
@@ -218,144 +174,67 @@ jobs:
           make clean
           CC=clang MOREFLAGS="-Werror -Wimplicit-fallthrough -O0" make -C lib -j libzstd.a ZSTD_LEGACY_SUPPORT=0
 
-  meson-linux:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Install packages
-        run: |
-          sudo apt-get update
-          sudo apt-get -y install build-essential python3-pip ninja-build liblz4-dev liblzma-dev
-          pip install --pre meson
-      - name: Build with Meson
-        run: |
-          meson setup \
-            --buildtype=debugoptimized \
-            -Db_lundef=false \
-            -Dauto_features=enabled \
-            -Dbin_programs=true \
-            -Dbin_tests=true \
-            -Dbin_contrib=true \
-            -Ddefault_library=both \
-            build/meson mesonBuild
-          ninja -C mesonBuild/
-          meson test -C mesonBuild/ --print-errorlogs
-          meson install -C mesonBuild --destdir staging/
-
-  meson-mingw-cross-compilation:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Install packages
-        run: |
-          sudo apt-get -qqq update
-          sudo apt-get -y install build-essential python3-pip ninja-build {gcc,g++}-mingw-w64-x86-64
-          pip install --pre meson
-      - name: Build with Meson
-        run: |
-          cat > cross.ini <<EOF
-          [binaries]
-          ar = 'x86_64-w64-mingw32-ar'
-          c = 'x86_64-w64-mingw32-gcc'
-          cpp = 'x86_64-w64-mingw32-g++'
-          ld = 'x86_64-w64-mingw32-ld'
-          objcopy = 'x86_64-w64-mingw32-objcopy'
-          objdump = 'x86_64-w64-mingw32-objdump'
-          strip = 'x86_64-w64-mingw32-strip'
-          windres = 'x86_64-w64-mingw32-windres'
-
-          [host_machine]
-          system = 'windows'
-          endian = 'little'
-          cpu_family = 'x86_64'
-          cpu = 'x86_64'
-          EOF
-
-          # pzstd doesn't build; skip -Dbin_contrib=true
-          meson setup \
-            --buildtype=debugoptimized \
-            --cross-file=cross.ini \
-            -Db_lundef=false \
-            -Dbin_programs=true \
-            -Dbin_tests=true \
-            -Ddefault_library=both \
-            build/meson builddir
-          ninja -C builddir/
-          if grep -- -pthread builddir/meson-private/libzstd.pc; then
-            echo "Error: found stray pthread dependency"
-            exit 1
-          fi
-
-  meson-windows:
+  cmake-visual-2019:
     runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Install packages
-        run: pip install --pre meson
-      - name: Configure with Meson
-        run: |
-          meson setup --vsenv build/meson/ builddir -Dbin_tests=true -Dbin_programs=true -Dbin_contrib=true
-      - name: Build with Meson
-        run: |
-          meson compile -C builddir/
-      - name: Test with Meson
-        run: |
-          meson test -C builddir/ --print-errorlogs
-      - name: Install with Meson
-        run: |
-          meson install -C builddir --destdir staging/
-
-  msbuild-visual-studio:
     strategy:
-      fail-fast: false  # 'false' means Don't stop matrix workflows even if some matrix failed.
       matrix:
-        include: [
-          { name: "VS 2022 x64 Debug", platform: x64, configuration: Debug, toolset: v143, runner: "windows-2022", arch: "" },
-          { name: "VS 2022 Win32 Debug", platform: Win32, configuration: Debug, toolset: v143, runner: "windows-2022", arch: "" },
-          { name: "VS 2022 x64 Release", platform: x64, configuration: Release, toolset: v143, runner: "windows-2022", arch: ""},
-          { name: "VS 2022 Win32 Release", platform: Win32, configuration: Release, toolset: v143, runner: "windows-2022", arch: ""},
-          { name: "VS 2025 x64 Debug", platform: x64, configuration: Debug, toolset: v143, runner: "windows-2025", arch: ""},
-          { name: "VS 2022 x64 Release AVX2", platform: x64, configuration: Release, toolset: v143, runner: "windows-2022", arch: "AdvancedVectorExtensions2" },
-        ]
-    runs-on: ${{matrix.runner}}
+        include:
+          - generator: "Visual Studio 16 2019"
+            flags: "-A x64"
+          - generator: "Visual Studio 16 2019"
+            flags: "-A Win32"
+          - generator: "MinGW Makefiles"
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: Add MSBuild to PATH
-      uses: microsoft/setup-msbuild@30375c66a4eea26614e0d39710365f22f8b0af57 # tag=v3.0.0
-    - name: Build ${{matrix.name}}
+      uses: microsoft/setup-msbuild@v1.0.2
+    - name: Build
       working-directory: ${{env.GITHUB_WORKSPACE}}
-      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
-      if: ${{ matrix.arch == '' }}
-      run: >
-        msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=${{matrix.toolset}}
-        /t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}} /warnaserror
-    - name: Build ${{matrix.name}}
-      working-directory: ${{env.GITHUB_WORKSPACE}}
-      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
-      if: ${{ matrix.arch != '' }}
-      run: >
-        msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=${{matrix.toolset}}
-        /t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}} /warnaserror
-        /p:InstructionSet=${{matrix.arch}}
-
-  # This tests that we don't accidentally grow the size too much.
-  # If the size grows intentionally, you can raise these numbers.
-  # But we do need to think about binary size, since it is a concern.
-  libzstd-size:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: libzstd size test
       run: |
-        make clean && make -j -C lib libzstd && ./tests/check_size.py lib/libzstd.so 1100000
-        make clean && make -j -C lib libzstd ZSTD_LIB_COMPRESSION=0 ZSTD_LIB_DICTBUILDER=0 && ./tests/check_size.py lib/libzstd.so 400000
-        make clean && make -j -C lib libzstd ZSTD_LIB_MINIFY=1 && ./tests/check_size.py lib/libzstd.so 300000
-        make clean && make -j -C lib libzstd ZSTD_LIB_MINIFY=1 ZSTD_LIB_COMPRESSION=0 ZSTD_LIB_DICTBUILDER=0 && ./tests/check_size.py lib/libzstd.so 80000
+        cd build\cmake
+        mkdir build
+        cd build
+        cmake.exe -G "${{matrix.generator}}" ${{matrix.flags}} ..
+        cmake.exe --build .
+
+  visual-2019:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        platform: [x64, Win32]
+        configuration: [Debug, Release]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Add MSBuild to PATH
+      uses: microsoft/setup-msbuild@v1.0.2
+    - name: Build
+      working-directory: ${{env.GITHUB_WORKSPACE}}
+      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
+      run: >
+        msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v142
+        /t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}}
+
+  visual-2015:
+    # only GH actions windows-2016 contains VS 2015
+    runs-on: windows-2016
+    strategy:
+      matrix:
+        platform: [x64, Win32]
+        configuration: [Debug, Release]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Add MSBuild to PATH
+      uses: microsoft/setup-msbuild@v1.0.2
+    - name: Build
+      working-directory: ${{env.GITHUB_WORKSPACE}}
+      run: >
+        msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140
+        /t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}}
 
   minimal-decompressor-macros:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: minimal decompressor macros
       run: |
         make clean && make -j all ZSTD_LIB_MINIFY=1 MOREFLAGS="-Werror"
@@ -366,13 +245,11 @@ jobs:
         make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
         make clean && make -j all MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
         make clean && make check MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
-        make clean && make check ZSTD_LIB_EXCLUDE_COMPRESSORS_DFAST_AND_UP=1 MOREFLAGS="-Werror"
-        make clean && make check ZSTD_LIB_EXCLUDE_COMPRESSORS_GREEDY_AND_UP=1 MOREFLAGS="-Werror"
 
   dynamic-bmi2:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: dynamic bmi2 tests
       run: |
         make clean && make -j check MOREFLAGS="-O0 -Werror -mbmi2"
@@ -384,34 +261,33 @@ jobs:
   test-variants:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: make all variants & validate
       run: |
         make -j -C programs allVariants MOREFLAGS=-O0
         ./tests/test-variants.sh
 
+
   qemu-consistency:
     name: QEMU ${{ matrix.name }}
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false  # 'false' means Don't stop matrix workflows even if some matrix failed.
       matrix:
         include: [
           { name: ARM,      xcc_pkg: gcc-arm-linux-gnueabi,     xcc: arm-linux-gnueabi-gcc,     xemu_pkg: qemu-system-arm,    xemu: qemu-arm-static     },
-          { name: ARM64,    xcc_pkg: gcc-aarch64-linux-gnu,     xcc: aarch64-linux-gnu-gcc,     xemu_pkg: qemu-system-aarch64,xemu: qemu-aarch64-static },
+          { name: ARM64,    xcc_pkg: gcc-aarch64-linux-gnu,     xcc: aarch64-linux-gnu-gcc,     xemu_pkg: qemu-system-arm,    xemu: qemu-aarch64-static },
           { name: PPC,      xcc_pkg: gcc-powerpc-linux-gnu,     xcc: powerpc-linux-gnu-gcc,     xemu_pkg: qemu-system-ppc,    xemu: qemu-ppc-static     },
           { name: PPC64LE,  xcc_pkg: gcc-powerpc64le-linux-gnu, xcc: powerpc64le-linux-gnu-gcc, xemu_pkg: qemu-system-ppc,    xemu: qemu-ppc64le-static },
           { name: S390X,    xcc_pkg: gcc-s390x-linux-gnu,       xcc: s390x-linux-gnu-gcc,       xemu_pkg: qemu-system-s390x,  xemu: qemu-s390x-static   },
           { name: MIPS,     xcc_pkg: gcc-mips-linux-gnu,        xcc: mips-linux-gnu-gcc,        xemu_pkg: qemu-system-mips,   xemu: qemu-mips-static    },
-          { name: RISC-V,   xcc_pkg: gcc-14-riscv64-linux-gnu,  xcc: riscv64-linux-gnu-gcc-14,  xemu_pkg: qemu-system-riscv64,xemu: qemu-riscv64-static },
           { name: M68K,     xcc_pkg: gcc-m68k-linux-gnu,        xcc: m68k-linux-gnu-gcc,        xemu_pkg: qemu-system-m68k,   xemu: qemu-m68k-static    },
-          { name: SPARC,    xcc_pkg: gcc-sparc64-linux-gnu,     xcc: sparc64-linux-gnu-gcc,     xemu_pkg: qemu-system-sparc,  xemu: qemu-sparc64-static },
         ]
     env:                        # Set environment variables
       XCC: ${{ matrix.xcc }}
       XEMU: ${{ matrix.xemu }}
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2 # https://github.com/actions/checkout
     - name: apt update & install
       run: |
         sudo apt-get update
@@ -431,15 +307,7 @@ jobs:
     - name: ARM64
       if: ${{ matrix.name == 'ARM64' }}
       run: |
-        make clean
-        LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make -j check
-        LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make -j -C tests test-cli-tests
-        CFLAGS="-O3 -march=armv8.2-a+sve2" LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make -j check
-        CFLAGS="-O3 -march=armv8.2-a+sve2" LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make -j -C tests test-cli-tests
-# This test is only compatible with standard libraries that support BTI (Branch Target Identification).
-# Unfortunately, the standard library provided on Ubuntu 24.04 does not have this feature enabled.
-#        make clean
-#        LDFLAGS="-static -z force-bti" MOREFLAGS="-mbranch-protection=standard" CC=$XCC QEMU_SYS=$XEMU make check V=1
+        LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
     - name: PPC
       if: ${{ matrix.name == 'PPC' }}
       run: |
@@ -456,64 +324,47 @@ jobs:
       if: ${{ matrix.name == 'MIPS' }}
       run: |
         LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
-    - name: RISC-V
-      if: ${{ matrix.name == 'RISC-V' }}
-      run: |
-        LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
-        CFLAGS="-march=rv64gcv -O3" LDFLAGS="-static -DMEM_FORCE_MEMORY_ACCESS=0" CC=$XCC QEMU_SYS="$XEMU -cpu rv64,v=true,vlen=128" make clean check
-        CFLAGS="-march=rv64gcv -O3" LDFLAGS="-static -DMEM_FORCE_MEMORY_ACCESS=0" CC=$XCC QEMU_SYS="$XEMU -cpu rv64,v=true,vlen=256" make clean check
-        CFLAGS="-march=rv64gcv -O3" LDFLAGS="-static -DMEM_FORCE_MEMORY_ACCESS=0" CC=$XCC QEMU_SYS="$XEMU -cpu rv64,v=true,vlen=512" make clean check
     - name: M68K
       if: ${{ matrix.name == 'M68K' }}
       run: |
         LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
-    - name: SPARC
-      if: ${{ matrix.name == 'SPARC' }}
-      run: |
-        LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
 
   mingw-short-test:
     runs-on: windows-latest
     strategy:
-      fail-fast: false  # 'false' means Don't stop matrix workflows even if some matrix failed.
+      fail-fast: false
       matrix:
         include: [
-          { compiler: gcc, msystem: MINGW32, cflags: "-Werror"},
-          { compiler: gcc, msystem: MINGW64, cflags: "-Werror"},
-          { compiler: clang, msystem: MINGW64, cflags: "--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion -Wno-unused-command-line-argument"},
+          { compiler: gcc, platform: x64, script: "CFLAGS=-Werror make -j allzstd DEBUGLEVEL=2"},
+          { compiler: gcc, platform: x86, script: "CFLAGS=-Werror make -j allzstd"},
+          { compiler: clang, platform: x64, script: "CFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion' make -j allzstd V=1"},
         ]
-    defaults:
-      run:
-        shell: msys2 {0}
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - uses: msys2/setup-msys2@66cd2cce69caa17b53920067426061ca1de3a884 # tag=v2.32.0
-      with:
-        msystem: ${{ matrix.msystem }}
-        install: make diffutils
-        update: true
-    # Based on https://ariya.io/2020/07/on-github-actions-with-msys2
-    - name: install mingw gcc i686
-      if: ${{ (matrix.msystem == 'MINGW32') && (matrix.compiler == 'gcc') }}
-      run: pacman --noconfirm -S mingw-w64-i686-gcc
-    - name: install mingw gcc x86_64
-      if: ${{ (matrix.msystem == 'MINGW64') && (matrix.compiler == 'gcc') }}
-      run: pacman --noconfirm -S mingw-w64-x86_64-gcc
-    - name: install mingw clang i686
-      if: ${{ (matrix.msystem == 'MINGW32') && (matrix.compiler == 'clang') }}
-      run: pacman --noconfirm -S mingw-w64-i686-clang
-    - name: install mingw clang x86_64
-      if: ${{ (matrix.msystem == 'MINGW64') && (matrix.compiler == 'clang') }}
-      run: pacman --noconfirm -S mingw-w64-x86_64-clang
-    - name: run mingw tests
+    - uses: actions/checkout@v2
+    - name: Mingw short test
       run: |
+        ECHO "Building ${{matrix.compiler}} ${{matrix.platform}}"
+        $env:PATH_ORIGINAL = $env:PATH
+        $env:PATH_MINGW32 = "C:\msys64\mingw32\bin"
+        $env:PATH_MINGW64 = "C:\msys64\mingw64\bin"
+        COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw32\bin\make.exe
+        COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw64\bin\make.exe
+        IF ("${{matrix.platform}}" -eq "x64")
+        {
+            $env:PATH = $env:PATH_MINGW64 + ";" + $env:PATH_ORIGINAL
+        }
+        ELSEIF ("${{matrix.platform}}" -eq "x86")
+        {
+            $env:PATH = $env:PATH_MINGW32 + ";" + $env:PATH_ORIGINAL
+        }
         make -v
-        export CC=${{ matrix.compiler }}
-        $CC --version
-        CFLAGS="${{ matrix.cflags }}" make -j allzstd
-        echo "Testing $CC ${{ matrix.msystem }}"
+        sh -c "${{matrix.compiler}} -v"
+        $env:CC = "${{matrix.compiler}}"
+        sh -c "${{matrix.script}}"
+        ECHO "Testing ${{matrix.compiler}} ${{matrix.platform}}"
         make clean
-        MSYS="" make check
+        make check
+
 
   visual-runtime-tests:
     runs-on: windows-latest
@@ -522,9 +373,9 @@ jobs:
         platform: [x64, Win32]
         configuration: [Release]
     steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+    - uses: actions/checkout@v2
     - name: Add MSBuild to PATH
-      uses: microsoft/setup-msbuild@30375c66a4eea26614e0d39710365f22f8b0af57 # tag=v3.0.0
+      uses: microsoft/setup-msbuild@v1.0.2
     - name: Build and run tests
       working-directory: ${{env.GITHUB_WORKSPACE}}
       env:
@@ -536,145 +387,41 @@ jobs:
         COPY build\VS2010\bin\${{matrix.platform}}_${{matrix.configuration}}\*.exe tests\
         CD tests
         sh -e playTests.sh
+        DIR
         .\fuzzer.exe -T2m
 
-  # Following instructions at: https://github.com/marketplace/actions/install-cygwin-action
-  cygwin-tests:
-    runs-on: windows-latest
-    steps:
-    - run: git config --global core.autocrlf input
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - uses: cygwin/cygwin-install-action@3f0a3f9f988f7e96b8c18098ae05eaec175f5b52 # tag=v6
-      with:
-        platform: x86_64
-        packages: >-
-          autoconf,
-          automake,
-          gcc-g++,
-          make,
-          mingw64-x86_64-gcc-g++,
-          patch,
-          perl
-    - name: cygwin tests
-      shell: C:\cygwin\bin\bash.exe --noprofile --norc -eo pipefail '{0}'
-      run: >-
-        export PATH=/usr/bin:$(cygpath ${SYSTEMROOT})/system32 &&
-        export CFLAGS="-Werror -O1" &&
-        ls &&
-        make -j allzstd &&
-        make -C tests fuzzer &&
-        ./tests/fuzzer.exe -v -T1m
-    - name: cygwin install test
-      shell: C:\cygwin\bin\bash.exe --noprofile --norc -eo pipefail '{0}'
-      run: >-
-        make -j &&
-        make install
+# This test currently fails on Github Actions specifically.
+# Possible reason : TTY emulation.
+# Note that the same test works fine locally and on travisCI.
+# This will have to be fixed before transferring the test to GA.
+#  versions-compatibility:
+#    runs-on: ubuntu-latest
+#    steps:
+#    - uses: actions/checkout@v2
+#    - name: Versions Compatibility Test
+#      run: |
+#        make -C tests versionsTest
 
-  pkg-config:
-    runs-on: ubuntu-latest
-    container:
-      image: debian:testing
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Install dependencies
-        run: |
-          apt -y update
-          apt -y install --no-install-recommends gcc libc6-dev make pkg-config
-      - name: Build and install
-        run: make -C lib install
-      - name: Test pkg-config
-        run: |
-          cc -Wall -Wextra -Wpedantic -Werror -o simple examples/simple_compression.c $(pkg-config --cflags --libs libzstd)
-          ./simple LICENSE
 
-  versions-compatibility:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Versions Compatibility Test
-      run: |
-        make -C tests versionsTest
-
-  clangbuild:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: make clangbuild
-      run: |
-        make clangbuild
-
-  gcc-pgo:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Build PGO Zstd with GCC
-      env:
-        CC: gcc
-      run: |
-        make -C programs zstd-pgo
-        ./programs/zstd -b
-
-  clang-pgo:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Build PGO Zstd with Clang
-      env:
-        CC: clang
-      run: |
-        sudo apt install -y llvm
-        llvm-profdata --version
-        make -C programs zstd-pgo
-        ./programs/zstd -b
-
-  musl-build:
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-      - name: Install musl-tools
-        run: |
-          sudo apt install -y musl-tools
-      - name: Compile with musl-gcc and test-zstd
-        run: |
-          CC=musl-gcc CFLAGS="-Werror -O3" CPPFLAGS=-DZDICT_QSORT=ZDICT_QSORT_C90 make -j -C tests test-zstd V=1
-
-  intel-cet-compatibility:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: Build Zstd
-      run: |
-        make -j zstd V=1
-        readelf -n zstd
-    - name: Get Intel SDE
-      run: |
-        curl -LO https://downloadmirror.intel.com/813591/sde-external-9.33.0-2024-01-07-lin.tar.xz
-        tar xJvf sde-external-9.33.0-2024-01-07-lin.tar.xz
-    - name: Configure Permissions
-      run: |
-        echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
-    - name: Run Under SDE
-      run: |
-        sde-external-9.33.0-2024-01-07-lin/sde -cet -cet-raise 0 -cet-endbr-exe -cet-stderr -cet-abort -- ./zstd -b3
-
-  icx:
-    # install instructions: https://www.intel.com/content/www/us/en/docs/oneapi/installation-guide-linux/2025-0/apt-005.html
-    name: icx-check
-    runs-on: ubuntu-latest
-    steps:
-    - name: install icx
-      run: |
-        # download the key to system keyring
-        wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB \
-        | gpg --dearmor | sudo tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null
-
-        # add signed entry to apt sources and configure the APT client to use Intel repository:
-        echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
-        sudo apt-get update
-        sudo apt-get install -y intel-basekit intel-hpckit
-    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-    - name: make check
-      run: |
-        source /opt/intel/oneapi/setvars.sh
-        make CC=icx check
-        make CC=icx -C tests test-cli-tests
+# For reference : icc tests
+# icc tests are currently failing on Github Actions, likely to issues during installation stage
+# To be fixed later
+#
+#  icc:
+#    name: icc-check
+#    runs-on: ubuntu-latest
+#    steps:
+#    - name: install icc
+#      run: |
+#        export DEBIAN_FRONTEND=noninteractive
+#        sudo apt-get -qqq update
+#        sudo apt-get install -y wget build-essential pkg-config cmake ca-certificates gnupg
+#        sudo wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
+#        sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
+#        sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
+#        sudo apt-get update
+#        sudo apt-get install -y intel-basekit intel-hpckit
+#    - uses: actions/checkout@v2
+#    - name: make check
+#      run: |
+#        make CC=/opt/intel/oneapi/compiler/latest/linux/bin/intel64/icc check

.github/workflows/nightly.yml

@@ -1,38 +0,0 @@
-name: facebook/zstd/nightly
-on:
-  schedule:
-    - cron: '0 0 * * *'
-  push:
-    branches:
-      - release
-      - dev
-      - '*nightly*'
-permissions: read-all
-jobs:
-  regression-test:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v6.0.2
-    - name: Install dependencies
-      run: sudo apt-get update && sudo apt-get install -y libcurl4-openssl-dev
-    - name: Regression Test
-      run: |
-        make -C programs zstd
-        make -C tests/regression test
-
-# Longer tests
-  #- make -C tests test-zstd-nolegacy && make clean
-  #- pyenv global 3.4.4; make -C tests versionsTest && make clean
-  #- make zlibwrapper         && make clean
-  #- gcc -v; make -C tests test32 MOREFLAGS="-I/usr/include/x86_64-linux-gnu" && make clean
-  #- make uasan               && make clean
-  #- make asan32              && make clean
-  #- make -C tests test32 CC=clang MOREFLAGS="-g -fsanitize=address -I/usr/include/x86_64-linux-gnu"
-# Valgrind tests
-  #- CFLAGS="-O1 -g" make -C zlibWrapper valgrindTest && make clean
-  #- make -C tests valgrindTest && make clean
-# ARM, AArch64, PowerPC, PowerPC64 tests
-  #- make ppctest             && make clean
-  #- make ppc64test           && make clean
-  #- make armtest             && make clean
-  #- make aarch64test         && make clean

.github/workflows/publish-release-artifacts.yml

@@ -3,21 +3,16 @@ name: publish-release-artifacts
 on:
   release:
     types:
-      - published
-
-permissions: read-all
+      - created
 
 jobs:
   publish-release-artifacts:
-    permissions:
-      contents: write # to fetch code and upload artifacts
-
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/')
 
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
+        uses: actions/checkout@v2
 
       - name: Archive
         env:
@@ -66,7 +61,7 @@ jobs:
           fi
 
       - name: Publish
-        uses: skx/github-action-publish-binaries@b9ca5643b2f1d7371a6cba7f35333f1461bbc703 # tag=release-2.0
+        uses: skx/github-action-publish-binaries@release-1.3
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:

.github/workflows/release_check.yml

@@ -1,64 +0,0 @@
-name: release_checks
-
-on:
-  push:
-    branches:
-      - release
-  pull_request:
-    branches:
-      - release
-
-permissions: read-all
-
-jobs:
-  verify-manual:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v6.0.2
-
-      - name: Save current manual
-        run: mv doc/zstd_manual.html doc/zstd_manual_saved.html
-
-      - name: Generate new manual
-        run: make manual
-
-      - name: Compare manuals
-        run: |
-          if ! cmp -s doc/zstd_manual.html doc/zstd_manual_saved.html; then
-            echo "The API manual was not updated before release !"
-            exit 1
-          fi
-
-  verify-man-pages:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v6.0.2
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y ruby ruby-dev
-          sudo gem install ronn
-
-      - name: Display ronn version
-        run: ronn --version
-
-      - name: Save current man pages
-        run: |
-          mv programs/zstd.1 programs/zstd.1.saved
-          mv programs/zstdgrep.1 programs/zstdgrep.1.saved
-          mv programs/zstdless.1 programs/zstdless.1.saved
-
-      - name: Generate new manual pages
-        run: make -C programs man
-
-      - name: Compare man pages
-        run: |
-          for file in zstd.1 zstdgrep.1 zstdless.1; do
-            if ! cmp -s programs/$file programs/$file.saved; then
-              echo "The man page $file should have been updated."
-              exit 1
-            fi
-          done

.github/workflows/scorecards.yml

@@ -1,64 +0,0 @@
-name: Scorecards supply-chain security
-on:
-  # Only the default branch is supported.
-  branch_protection_rule:
-  schedule:
-    - cron: '22 21 * * 2'
-  push:
-    # TODO: Add release branch when supported?
-    branches: [ "dev" ]
-
-# Declare default permissions as read only.
-permissions: read-all
-
-jobs:
-  analysis:
-    name: Scorecards analysis
-    if: github.repository == 'facebook/zstd'
-    runs-on: ubuntu-latest
-    permissions:
-      # Needed to upload the results to code-scanning dashboard.
-      security-events: write
-      # Used to receive a badge.
-      id-token: write
-      # Needs for private repositories.
-      contents: read
-      actions: read
-
-    steps:
-      - name: "Checkout code"
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-        with:
-          persist-credentials: false
-
-      - name: "Run analysis"
-        uses: ossf/scorecard-action@f49aabe0b5af0936a0987cfb85d86b75731b0186 # tag=v2.4.1
-        with:
-          results_file: results.sarif
-          results_format: sarif
-          # (Optional) Read-only PAT token. Uncomment the `repo_token` line below if:
-          # - you want to enable the Branch-Protection check on a *public* repository, or
-          # - you are installing Scorecards on a *private* repository
-          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.
-          # repo_token: ${{ secrets.SCORECARD_READ_TOKEN }}
-
-          # Publish the results for public repositories to enable scorecard badges. For more details, see
-          # https://github.com/ossf/scorecard-action#publishing-results.
-          # For private repositories, `publish_results` will automatically be set to `false`, regardless
-          # of the value entered here.
-          publish_results: true
-
-      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
-      # format to the repository Actions tab.
-      - name: "Upload artifact"
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # tag=v7.0.1
-        with:
-          name: SARIF file
-          path: results.sarif
-          retention-days: 5
-
-      # Upload the results to GitHub's code scanning dashboard.
-      - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # tag=v4.36.2
-        with:
-          sarif_file: results.sarif

.github/workflows/windows-artifacts.yml

@@ -1,119 +0,0 @@
-name: windows-artifacts
-
-on:
-  push:
-    branches: [ test_artifacts, win_artifacts, release ]
-  release:
-    types:
-      - published
-
-permissions: read-all
-
-jobs:
-  windows-artifacts:
-    permissions:
-      contents: write # to fetch code and upload artifacts
-    # For msys2, see https://ariya.io/2020/07/on-github-actions-with-msys2
-    runs-on: ${{ matrix.shell == 'cmake' && 'windows-11-arm' || 'windows-latest' }}
-    strategy:
-      # For msys2, see https://github.com/msys2/setup-msys2
-      matrix:
-        include:
-          - { msystem: mingw64, env: x86_64, ziparch: win64, shell: msys2 }
-          - { msystem: mingw32, env: i686, ziparch: win32, shell: msys2 }
-          - { msystem: null, env: arm64, ziparch: win-arm64, shell: cmake }
-
-    defaults:
-      run:
-        shell: ${{ matrix.shell == 'cmake' && 'pwsh' || 'msys2 {0}' }}
-
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # tag=v6.0.2
-
-      # MSYS2 setup
-      - uses: msys2/setup-msys2@66cd2cce69caa17b53920067426061ca1de3a884 # tag=v2.32.0
-        if: matrix.shell == 'msys2'
-        with:
-          msystem: ${{ matrix.msystem }}
-          install: make p7zip git mingw-w64-${{matrix.env}}-gcc
-          update: true
-
-      - name: display versions (MSYS2)
-        if: matrix.shell == 'msys2'
-        run: |
-          make -v
-          cc -v
-
-      - name: display versions (CMake)
-        if: matrix.shell == 'cmake'
-        run: |
-          cmake --version
-
-      # Build dependencies (MSYS2 only)
-      - name: Building zlib to static link
-        if: matrix.shell == 'msys2'
-        run: |
-          git clone --depth 1 --branch v1.3.1 https://github.com/madler/zlib
-          make -C zlib -f win32/Makefile.gcc libz.a
-
-      - name: Building lz4 to static link
-        if: matrix.shell == 'msys2'
-        run: |
-          git clone --depth 1 --branch v1.10.0 https://github.com/lz4/lz4
-          # ensure both libraries use the same version of libxxhash
-          cp lib/common/xxhash.* lz4/lib
-          CPPFLAGS=-DXXH_NAMESPACE=LZ4_ make -C lz4/lib liblz4.a V=1
-
-      # Build zstd
-      - name: Building zstd programs
-        if: matrix.shell == 'msys2'
-        run: |
-          CPPFLAGS="-I../zlib -I../lz4/lib" LDFLAGS=-static make -j allzstd V=1 HAVE_ZLIB=1 HAVE_LZ4=1 HAVE_LZMA=0 LDLIBS="../zlib/libz.a ../lz4/lib/liblz4.a"
-
-      - name: Build zstd (CMake ARM64)
-        if: matrix.shell == 'cmake'
-        run: |
-          cd build\cmake
-          mkdir build
-          cd build
-          cmake.exe -G "Visual Studio 17 2022" -A ARM64 -DCMAKE_BUILD_TYPE=Release -DZSTD_BUILD_PROGRAMS=ON -DZSTD_BUILD_SHARED=ON -DZSTD_BUILD_STATIC=ON ..
-          cmake.exe --build . --config Release --parallel
-
-      - name: Create artifacts (MSYS2)
-        if: matrix.shell == 'msys2'
-        run: |
-          ./lib/dll/example/build_package.bat || exit 1
-          mv bin/ zstd-${{ github.ref_name }}-${{matrix.ziparch}}/
-
-      - name: Create artifacts (CMake)
-        if: matrix.shell == 'cmake'
-        run: |
-          .\lib\dll\example\build_package.bat
-          if ($LASTEXITCODE -ne 0) { exit 1 }
-          mv bin/ zstd-${{ github.ref_name }}-${{matrix.ziparch}}/
-
-      - name: Publish zstd-$VERSION-${{matrix.ziparch}}.zip for manual inspection
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # tag=v7.0.1
-        with:
-          compression-level: 9  # maximum compression
-          if-no-files-found: error # defaults to `warn`
-          path: ${{ github.workspace }}/zstd-${{ github.ref_name }}-${{matrix.ziparch}}/
-          name: zstd-${{ github.ref_name }}-${{matrix.ziparch}}
-
-      - name: Package artifact for upload (MSYS2)
-        if: matrix.shell == 'msys2'
-        run: |
-          7z a -tzip -mx9 "$(cygpath -u '${{ github.workspace }}/zstd-${{ github.ref_name }}-${{ matrix.ziparch }}.zip')" "$(cygpath -u '${{ github.workspace }}/zstd-${{ github.ref_name }}-${{ matrix.ziparch }}')"
-
-      - name: Package artifact for upload (CMake)
-        if: matrix.shell == 'cmake'
-        run: |
-          Compress-Archive -Path "zstd-${{ github.ref_name }}-${{ matrix.ziparch }}" -DestinationPath "zstd-${{ github.ref_name }}-${{ matrix.ziparch }}.zip" -CompressionLevel Optimal
-
-      - name: Upload release asset
-        if: github.event_name == 'release'
-        shell: pwsh
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          gh release upload "${{ github.ref_name }}" "$env:GITHUB_WORKSPACE/zstd-${{ github.ref_name }}-${{ matrix.ziparch }}.zip" --clobber

.gitignore

@@ -12,8 +12,6 @@
 *.so
 *.so.*
 *.dylib
-*.framework
-*.xcframework
 
 # Executables
 /zstd
@@ -22,6 +20,14 @@ zstdmt
 *.out
 *.app
 
+# Test artefacts
+tmp*
+*.zst
+*.zstd
+dictionary.
+dictionary
+NUL
+
 # Build artefacts
 contrib/linux-kernel/linux/
 projects/
@@ -30,27 +36,12 @@ bin/
 buck-out/
 build-*
 *.gcda
-cmakebuild/
-cmake-build/
-
-# Test artefacts
-tmp*
-*.zst
-*.zstd
-dictionary.
-dictionary
-NUL
-install/
-
-# IDE
-.clang_complete
-compile_flags.txt
-.clang-format
 
 # Other files
 .directory
 _codelite/
 _zstdbench/
+.clang_complete
 *.idea
 *.swp
 .DS_Store

.travis.yml

@@ -0,0 +1,128 @@
+# Travis CI is used to test platforms that github-actions currently doesn't support
+# without either self-hosting or some finnicky work-around. Also, some tests
+# are troublesome to migrate since GH Actions runs tests not in a tty.
+language: c
+
+git:
+  depth: 1
+
+branches:
+  only:
+  - dev
+  - release
+  - master
+  - travisTest
+
+addons:
+  apt:
+    update: true
+
+env:
+  global:
+    - FUZZERTEST=-T1mn
+      ZSTREAM_TESTTIME=-T1mn
+      DECODECORPUS_TESTTIME=-T1mn
+
+matrix:
+  fast_finish: true
+  include:
+    - name: S390X (big endian) + Fuzz test
+      dist: trusty
+      arch: s390x
+      script:
+        - FUZZER_FLAGS=--no-big-tests make -C tests fuzztest
+
+    - name: S390X (big endian) + Fuzz test + no intrinsics
+      dist: trusty
+      arch: s390x
+      script:
+        - MOREFLAGS="-DZSTD_NO_INTRINSICS" FUZZER_FLAGS=--no-big-tests make -C tests fuzztest
+
+    - name: arm64    # ~2.5 mn
+      os: linux
+      arch: arm64
+      script:
+        - make check
+
+    - name: arm64fuzz
+      os: linux
+      arch: arm64
+      script:
+        - make -C tests fuzztest
+
+    # TODO: migrate to GH Actions once newest clang staticanalyze warnings are fixed
+    - name: static analyzer scanbuild    # ~8mn
+      dist: trusty  # note : it's important to pin down a version of static analyzer, since different versions report different false positives
+      script:
+        - make staticAnalyze
+
+    # GH actions can't run this command on OS-X, non-tty issues
+    - name: OS-X make all lib
+      os: osx
+      script:
+        - make -C lib all
+
+    # Introduced to check compat with old toolchains, to prevent e.g. #1872
+    - name: ARM Build Test (on Trusty)
+      dist: trusty
+      script:
+        - make arminstall
+        - make armbuild
+
+    # check release number (release/new tag only)
+    - name: Tag-Specific Test
+      if: tag =~ ^v[0-9]\.[0-9]
+      script:
+        - make -C tests checkTag
+        - tests/checkTag "$TRAVIS_BRANCH"
+
+    - name: PPC64LE + Fuzz test  # ~13mn
+      arch: ppc64le
+      env:
+        - FUZZER_FLAGS=--no-big-tests
+        - MOREFLAGS="-static"
+      script:
+        - cat /proc/cpuinfo
+        - make -C tests fuzztest
+
+    # This test currently fails on GA specifically, for no obvious reason
+    # (it works fine on travisCI, and on local test platforms).
+    - name: Versions Compatibility Test   # ~6mn
+      script:
+        - make -C tests versionsTest
+
+    # meson dedicated test
+    - name: Xenial (Meson + clang)    # ~15mn
+      dist: bionic
+      language: cpp
+      compiler: clang
+      install:
+        - sudo apt-get install -qq liblz4-dev valgrind tree
+        - |
+          travis_retry curl -o ~/ninja.zip -L 'https://github.com/ninja-build/ninja/releases/download/v1.9.0/ninja-linux.zip' &&
+          unzip ~/ninja.zip -d ~/.local/bin
+        - |
+          travis_retry curl -o ~/get-pip.py -L 'https://bootstrap.pypa.io/get-pip.py' &&
+          python3 ~/get-pip.py --user &&
+          pip3 install --user meson
+      script:
+        - |
+          meson setup \
+            --buildtype=debugoptimized \
+            -Db_lundef=false \
+            -Dauto_features=enabled \
+            -Dbin_programs=true \
+            -Dbin_tests=true \
+            -Dbin_contrib=true \
+            -Ddefault_library=both \
+             build/meson builddir
+        - pushd builddir
+        - ninja
+        - meson test --verbose --no-rebuild
+        - DESTDIR=./staging ninja install
+        - tree ./staging
+      after_failure:
+        - cat "$TRAVIS_BUILD_DIR"/builddir/meson-logs/testlog.txt
+
+  allow_failures:
+    - env: ALLOW_FAILURES=true

CHANGELOG

@@ -1,149 +1,3 @@
-v1.6.0 (Dec 2025)
-api: legacy format support is now disabled by default
-build: `ZSTD_LEGACY_SUPPORT` defaults to `0` in Makefile and CMake
-
-V1.5.7 (Feb 2025)
-fix: compression bug in 32-bit mode associated with long-lasting sessions
-api: new method `ZSTD_compressSequencesAndLiterals()` (#4217, #4232)
-api: `ZSTD_getFrameHeader()` works on skippable frames (#4228)
-perf: substantial compression speed improvements (up to +30%) on small data, by @TocarIP (#4144) and @cyan4973 (#4165)
-perf: improved compression speed (~+5%) for dictionary compression at low levels (#4170)
-perf: much faster speed for `--patch-from` at high compression levels (#4276)
-perf: higher `--patch-from` compression ratios, notably at high levels (#4288)
-perf: better speed for binaries on Windows (@pps83) and when compiled with Visual Studio (@MessyHack)
-perf: slight compression ratio improvement thanks to better block boundaries (#4136, #4176, #4178)
-perf: slight compression ratio improvement for `dfast`, aka levels 3 and 4 (#4171)
-perf: runtime bmi2 detection enabled on x86 32-bit mode (#4251)
-cli: multi-threading as default CLI setting, by @daniellerozenblit
-cli: new `--max` command (#4290)
-build: improve `msbuild` version autodetection, support VS2022, by @ManuelBlanc
-build: fix `meson` build by @artem and @Victor-C-Zhang, and on Windows by @bgilbert
-build: compatibility with Apple Framework, by @Treata11
-build: improve icc/icx compatibility, by @josepho0918 and @luau-project
-build: improve compatibility with Android NDK, by Adenilson Cavalcanti
-portability: linux kernel branch, with improved support for Sequence producers (@embg, @gcabiddu, @cyan4973)
-portability: improved qnx compatibility, suggested by @rainbowball
-portability: improved install script for FreeBSD, by @sunpoet
-portability: fixed test suite compatibility with gnu hurd, by @diegonc
-doc: clarify specification, by @elasota
-misc: improved tests/decodecorpus validation tool (#4102), by antmicro
-
-V1.5.6 (Mar 2024)
-api: Promote `ZSTD_c_targetCBlockSize` to Stable API by @felixhandte
-api: new `ZSTD_d_maxBlockSize` experimental parameter, to reduce streaming decompression memory, by @terrelln
-perf: improve performance of param `ZSTD_c_targetCBlockSize`, by @Cyan4973
-perf: improved compression of arrays of integers at high compression, by @Cyan4973
-lib: reduce binary size with selective build-time exclusion, by @felixhandte
-lib: improved huffman speed on small data and linux kernel, by @terrelln
-lib: accept dictionaries with partial literal tables, by @terrelln
-lib: fix CCtx size estimation with external sequence producer, by @embg
-lib: fix corner case decoder behaviors, by @Cyan4973 and @aimuz
-lib: fix zdict prototype mismatch in static_only mode, by @ldv-alt
-lib: fix several bugs in magicless-format decoding, by @embg
-cli: add common compressed file types to `--exclude-compressed`` by @daniellerozenblit
-cli: fix mixing `-c` and `-o` commands with `--rm`, by @Cyan4973
-cli: fix erroneous exclusion of hidden files with `--output-dir-mirror` by @felixhandte
-cli: improved time accuracy on BSD, by @felixhandte
-cli: better errors on argument parsing, by @KapJI
-tests: better compatibility with older versions of `grep`, by @Cyan4973
-tests: lorem ipsum generator as default backup content, by @Cyan4973
-build: cmake improvements by @terrelln, @sighingnow, @gjasny, @JohanMabille, @Saverio976, @gruenich, @teo-tsirpanis
-build: bazel support, by @jondo2010
-build: fix cross-compiling for AArch64 with lld by @jcelerier
-build: fix Apple platform compatibility, by @nidhijaju
-build: fix Visual 2012 and lower compatibility, by @Cyan4973
-build: improve win32 support, by @DimitriPapadopoulos
-build: better C90 compliance for zlibWrapper, by @emaste
-port: make: fat binaries on macos, by @mredig
-port: ARM64EC compatibility for Windows, by @dunhor
-port: QNX support by @klausholstjacobsen
-port: MSYS2 and Cygwin makefile installation and test support, by @QBos07
-port: risc-v support validation in CI, by @Cyan4973
-port: sparc64 support validation in CI, by @Cyan4973
-port: AIX compatibility, by @likema
-port: HP-UX compatibility, by @likema
-doc: Improved specification accuracy, by @elasota
-bug: Fix and deprecate ZSTD_generateSequences (#3981)
-
-v1.5.5 (Apr 2023)
-fix: fix rare corruption bug affecting the high compression mode, reported by @danlark1 (#3517, @terrelln)
-perf: improve mid-level compression speed (#3529, #3533, #3543, @yoniko and #3552, @terrelln)
-lib: deprecated bufferless block-level API (#3534) by @terrelln
-cli: mmap large dictionaries to save memory, by @daniellerozenblit
-cli: improve speed of --patch-from mode (~+50%) (#3545) by @daniellerozenblit
-cli: improve i/o speed (~+10%) when processing lots of small files (#3479) by @felixhandte
-cli: zstd no longer crashes when requested to write into write-protected directory (#3541) by @felixhandte
-cli: fix decompression into block device using -o, reported by @georgmu (#3583)
-build: fix zstd CLI compiled with lzma support but not zlib support (#3494) by @Hello71
-build: fix cmake does no longer require 3.18 as minimum version (#3510) by @kou
-build: fix MSVC+ClangCL linking issue (#3569) by @tru
-build: fix zstd-dll, version of zstd CLI that links to the dynamic library (#3496) by @yoniko
-build: fix MSVC warnings (#3495) by @embg
-doc: updated zstd specification to clarify corner cases, by @Cyan4973
-doc: document how to create fat binaries for macos (#3568) by @rickmark
-misc: improve seekable format ingestion speed (~+100%) for very small chunk sizes (#3544) by @Cyan4973
-misc: tests/fullbench can benchmark multiple files (#3516) by @dloidolt
-
-v1.5.4 (Feb 2023)
-perf: +20% faster huffman decompression for targets that can't compile x64 assembly (#3449, @terrelln)
-perf: up to +10% faster streaming compression at levels 1-2 (#3114, @embg)
-perf: +4-13% for levels 5-12 by optimizing function generation (#3295, @terrelln)
-pref: +3-11% compression speed for `arm` target (#3199, #3164, #3145, #3141, #3138, @JunHe77 and #3139, #3160, @danlark1)
-perf: +5-30% faster dictionary compression at levels 1-4 (#3086, #3114, #3152, @embg)
-perf: +10-20% cold dict compression speed by prefetching CDict tables (#3177, @embg)
-perf: +1% faster compression by removing a branch in ZSTD_fast_noDict (#3129, @felixhandte)
-perf: Small compression ratio improvements in high compression mode (#2983, #3391, @Cyan4973 and #3285, #3302, @daniellerozenblit)
-perf: small speed improvement by better detecting `STATIC_BMI2` for `clang` (#3080, @TocarIP)
-perf: Improved streaming performance when `ZSTD_c_stableInBuffer` is set (#2974, @Cyan4973)
-cli: Asynchronous I/O for improved cli speed (#2975, #2985, #3021, #3022, @yoniko)
-cli: Change `zstdless` behavior to align with `zless` (#2909, @binhdvo)
-cli: Keep original file if `-c` or `--stdout` is given (#3052, @dirkmueller)
-cli: Keep original files when result is concatenated into a single output with `-o` (#3450, @Cyan4973)
-cli: Preserve Permissions and Ownership of regular files (#3432, @felixhandte)
-cli: Print zlib/lz4/lzma library versions with `-vv` (#3030, @terrelln)
-cli: Print checksum value for single frame files with `-lv`  (#3332, @Cyan4973)
-cli: Print `dictID` when present with `-lv` (#3184, @htnhan)
-cli: when `stderr` is *not* the console, disable status updates, but preserve final summary (#3458, @Cyan4973)
-cli: support `--best` and `--no-name` in `gzip` compatibility mode (#3059, @dirkmueller)
-cli: support for `posix` high resolution timer `clock_gettime()`, for improved benchmark accuracy (#3423, @Cyan4973)
-cli: improved help/usage (`-h`,  `-H`) formatting (#3094, @dirkmueller and #3385, @jonpalmisc)
-cli: Fix better handling of bogus numeric values (#3268, @ctkhanhly)
-cli: Fix input consists of multiple files _and_ `stdin` (#3222, @yoniko)
-cli: Fix tiny files passthrough (#3215, @cgbur)
-cli: Fix for `-r` on empty directory (#3027, @brailovich)
-cli: Fix empty string as argument for `--output-dir-*` (#3220, @embg)
-cli: Fix decompression memory usage reported by `-vv --long` (#3042, @u1f35c, and #3232, @zengyijing)
-cli: Fix infinite loop when empty input is passed to trainer (#3081, @terrelln)
-cli: Fix `--adapt` doesn't work when `--no-progress` is also set (#3354, @terrelln)
-api: Support for Block-Level Sequence Producer (#3333, @embg)
-api: Support for in-place decompression (#3432, @terrelln)
-api: New  `ZSTD_CCtx_setCParams()`  function, set all parameters defined in a  `ZSTD_compressionParameters`  structure (#3403, @Cyan4973)
-api: Streaming decompression detects incorrect header ID sooner (#3175, @Cyan4973)
-api: Window size resizing optimization for edge case (#3345, @daniellerozenblit)
-api: More accurate error codes for busy-loop scenarios (#3413, #3455, @Cyan4973)
-api: Fix limit overflow in `compressBound` and `decompressBound` (#3362, #3373, Cyan4973) reported by @nigeltao
-api: Deprecate several advanced experimental functions: streaming (#3408, @embg), copy (#3196, @mileshu)
-bug: Fix corruption that rarely occurs in 32-bit mode with wlog=25 (#3361, @terrelln)
-bug: Fix for block-splitter (#3033, @Cyan4973)
-bug: Fixes for Sequence Compression API (#3023, #3040, @Cyan4973)
-bug: Fix leaking thread handles on Windows (#3147, @animalize)
-bug: Fix timing issues with cmake/meson builds (#3166, #3167, #3170, @Cyan4973)
-build: Allow user to select legacy level for cmake (#3050, @shadchin)
-build: Enable legacy support by default in cmake (#3079, @niamster)
-build: Meson build script improvements (#3039, #3120, #3122, #3327, #3357, @eli-schwartz and #3276, @neheb)
-build: Add aarch64 to supported architectures for zstd_trace (#3054, @ooosssososos)
-build: support AIX architecture (#3219, @qiongsiwu)
-build: Fix `ZSTD_LIB_MINIFY` build macro, which now reduces static library size by half (#3366, @terrelln)
-build: Fix Windows issues with Multithreading translation layer (#3364, #3380, @yoniko) and ARM64 target (#3320, @cwoffenden)
-build: Fix `cmake` script (#3382, #3392, @terrelln and #3252 @Tachi107 and #3167 @Cyan4973)
-doc: Updated man page, providing more details for `--train` mode (#3112, @Cyan4973)
-doc: Add decompressor errata document (#3092, @terrelln)
-misc: Enable Intel CET (#2992, #2994, @hjl-tools)
-misc: Fix `contrib/` seekable format (#3058, @yhoogstrate and #3346, @daniellerozenblit)
-misc: Improve speed of the one-file library generator (#3241, @wahern and #3005, @cwoffenden)
-
-v1.5.3 (dev version, unpublished)
-
 v1.5.2 (Jan, 2022)
 perf: Regain Minimal memset()-ing During Reuse of Compression Contexts (@Cyan4973, #2969)
 build: Build Zstd with `noexecstack` on All Architectures (@felixhandte, #2964)
@@ -165,7 +19,7 @@ build: support for m68k (Motorola 68000's), by @cyan4973
 build: improved AIX support, by @Helflym
 build: improved meson unofficial build, by @eli-schwartz
 cli : custom memory limit when training dictionary (#2925), by @embg
-cli : report advanced parameters information when compressing in very verbose mode (`-vv`), by @Svetlitski-FB
+cli : report advanced parameters information when compressing in very verbose mode (``-vv`), by @Svetlitski-FB
 
 v1.5.0  (May 11, 2021)
 api: Various functions promoted from experimental to stable API: (#2579-2581, @senhuang42)
@@ -232,7 +86,7 @@ api: Add Function to Generate Skippable Frame (#2439, @senhuang42)
 perf: New Algorithms for the Long Distance Matcher (#2483, @mpu)
 perf: Performance Improvements for Long Distance Matcher (#2464, @mpu)
 perf: Don't Shrink Window Log when Streaming with a Dictionary (#2451, @terrelln)
-cli: Fix `--output-dir-mirror` rejection of `..` -containing paths (#2512, @felixhandte)
+cli: Fix `--output-dir-mirror`'s Rejection of `..`-Containing Paths (#2512, @felixhandte)
 cli: Allow Input From Console When `-f`/`--force` is Passed (#2466, @felixhandte)
 cli: Improve Help Message (#2500, @senhuang42)
 tests: Remove Flaky Tests (#2455, #2486, #2445, @Cyan4973)
@@ -519,7 +373,7 @@ misc: added /contrib/docker script by @gyscos
 
 v1.3.3  (Dec 21, 2017)
 perf: faster zstd_opt strategy (levels 16-19)
-fix : bug #944 : multithreading with shared dictionary and large data, reported by @gsliepen
+fix : bug #944 : multithreading with shared ditionary and large data, reported by @gsliepen
 cli : fix : content size written in header by default
 cli : fix : improved LZ4 format support, by @felixhandte
 cli : new : hidden command `-S`, to benchmark multiple files while generating one result per file

CMakeLists.txt

@@ -1,11 +0,0 @@
-cmake_minimum_required(VERSION 3.10)
-
-# Thin wrapper so `cmake -S .` behaves like `cmake -S build/cmake`.
-# Policy lives in build/cmake; keep parent project language-less.
-project(zstd-superbuild LANGUAGES NONE)
-
-if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
-    message(FATAL_ERROR "In-source builds are not supported. Specify -B <build-dir>.")
-endif()
-
-add_subdirectory(build/cmake)

CONTRIBUTING.md

@@ -7,7 +7,7 @@ New versions are being developed in the "dev" branch,
 or in their own feature branch.
 When they are deemed ready for a release, they are merged into "release".
 
-As a consequence, all contributions must stage first through "dev"
+As a consequences, all contributions must stage first through "dev"
 or their own feature branch.
 
 ## Pull Requests
@@ -60,7 +60,7 @@ Our contribution process works in three main stages:
         * Note: run local tests to ensure that your changes didn't break existing functionality
             * Quick check
             ```
-            make check
+            make shortest
             ```
             * Longer check
             ```
@@ -134,11 +134,11 @@ It can be useful to look at additional static analyzers once in a while (and we
 - Static analyzers are full of false positive. The signal to noise ratio is actually pretty low.
 - A good CI policy is "zero-warning tolerance". That means that all issues must be solved, including false positives. This quickly becomes a tedious workload.
 - Multiple static analyzers will feature multiple kind of false positives, sometimes applying to the same code but in different ways leading to :
-   + tortuous code, trying to please multiple constraints, hurting readability and therefore maintenance. Sometimes, such complexity introduce other more subtle bugs, that are just out of scope of the analyzers.
+   + torteous code, trying to please multiple constraints, hurting readability and therefore maintenance. Sometimes, such complexity introduce other more subtle bugs, that are just out of scope of the analyzers.
    + sometimes, these constraints are mutually exclusive : if one try to solve one, the other static analyzer will complain, they can't be both happy at the same time.
 - As if that was not enough, the list of false positives change with each version. It's hard enough to follow one static analyzer, but multiple ones with their own update agenda, this quickly becomes a massive velocity reducer.
 
-This is different from running a static analyzer once in a while, looking at the output, and __cherry picking__ a few warnings that seem helpful, either because they detected a genuine risk of bug, or because it helps expressing the code in a way which is more readable or more difficult to misuse. These kinds of reports can be useful, and are accepted.
+This is different from running a static analyzer once in a while, looking at the output, and __cherry picking__ a few warnings that seem helpful, either because they detected a genuine risk of bug, or because it helps expressing the code in a way which is more readable or more difficult to misuse. These kind of reports can be useful, and are accepted.
 
 ## Continuous Integration
 CI tests run every time a pull request (PR) is created or updated. The exact tests
@@ -171,8 +171,8 @@ who want earlier signal.
 | Cirrus CI | Used for testing on FreeBSD                                                                                | https://github.com/marketplace/cirrus-ci/                                                                                                              | `.cirrus.yml`          |
 | Circle CI | Historically was used to provide faster signal,<br/> but we may be able to migrate these to Github Actions | https://circleci.com/docs/2.0/getting-started/#setting-up-circleci <br> https://youtu.be/Js3hMUsSZ2c <br> https://circleci.com/docs/2.0/enable-checks/ | `.circleci/config.yml` |
 
-Note: the instructions linked above mostly cover how to set up a repository with CI from scratch.
-The general idea should be the same for setting up CI on your fork of zstd, but you may have to
+Note: the instructions linked above mostly cover how to set up a repository with CI from scratch. 
+The general idea should be the same for setting up CI on your fork of zstd, but you may have to 
 follow slightly different steps. In particular, please ignore any instructions related to setting up
 config files (since zstd already has configs for each of these services).
 
@@ -197,7 +197,7 @@ something subtle merged is extensive benchmarking. You will be doing us a great
 take the time to run extensive, long-duration, and potentially cross-(os, platform, process, etc)
 benchmarks on your end before submitting a PR. Of course, you will not be able to benchmark
 your changes on every single processor and os out there (and neither will we) but do that best
-you can:) We've added some things to think about when benchmarking below in the Benchmarking
+you can:) We've adding some things to think about when benchmarking below in the Benchmarking
 Performance section which might be helpful for you.
 3. Optimizing performance for a certain OS, processor vendor, compiler, or network system is a perfectly
 legitimate thing to do as long as it does not harm the overall performance health of Zstd.
@@ -216,7 +216,7 @@ will typically not be stable enough to obtain reliable benchmark results. If you
 hands on a desktop, this is usually a better scenario.
 
 Of course, benchmarking can be done on non-hyper-stable machines as well. You will just have to
-do a little more work to ensure that you are in fact measuring the changes you've made and not
+do a little more work to ensure that you are in fact measuring the changes you've made not and
 noise. Here are some things you can do to make your benchmarks more stable:
 
 1. The most simple thing you can do to drastically improve the stability of your benchmark is
@@ -273,7 +273,7 @@ for that options you have just provided. If you want to look at the internals of
 benchmarking script works, you can check out programs/benchzstd.c
 
 For example: say you have made a change that you believe improves the speed of zstd level 1. The
-very first thing you should use to assess whether you actually achieved any sort of improvement
+very first thing you should use to asses whether you actually achieved any sort of improvement
 is `zstd -b`. You might try to do something like this. Note: you can use the `-i` option to
 specify a running time for your benchmark in seconds (default is 3 seconds).
 Usually, the longer the running time, the more stable your results will be.
@@ -299,7 +299,7 @@ this method of evaluation will not be sufficient.
 ### Profiling
 There are a number of great profilers out there. We're going to briefly mention how you can
 profile your code using `instruments` on mac, `perf` on linux and `visual studio profiler`
-on Windows.
+on windows.
 
 Say you have an idea for a change that you think will provide some good performance gains
 for level 1 compression on Zstd. Typically this means, you have identified a section of
@@ -315,8 +315,8 @@ might be).
 
 Most profilers (including the profilers discussed below) will generate a call graph of
 functions for you. Your goal will be to find your function of interest in this call graph
-and then inspect the time spent inside of it. You might also want to look at the annotated
-assembly which most profilers will provide you with.
+and then inspect the time spent inside of it. You might also want to to look at the
+annotated assembly which most profilers will provide you with.
 
 #### Instruments
 We will once again consider the scenario where you think you've identified a piece of code
@@ -330,7 +330,7 @@ Instruments.
     * You will want a benchmark that runs for at least a few seconds (5 seconds will
     usually be long enough). This way the profiler will have something to work with
     and you will have ample time to attach your profiler to this process:)
-    * I will just use benchzstd as my benchmarmking script for this example:
+    * I will just use benchzstd as my bencharmking script for this example:
 ```
 $ zstd -b1 -i5 <my-data> # this will run for 5 seconds
 ```
@@ -373,12 +373,7 @@ counter `L1-dcache-load-misses`
 
 #### Visual Studio
 
-Build Zstd with symbols first (for example `cmake -B build -S build/cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo && ninja -C build zstd`) so the profiler resolves call stacks.
-
-* Launch Visual Studio’s Performance Profiler (`Alt+F2`), enable CPU Usage (optionally Instrumentation), and point it at the `programs/zstd` benchmark you want to run.
-* If you prefer to start the benchmark from a terminal, use “Attach to running process” to latch onto it mid-run; keep frame pointers (`-fno-omit-frame-pointer`) for clean stacks.
-* When you stop the capture, review the call tree, hot path, and annotated source panes
-* Microsoft’s [Performance Profiling docs](https://learn.microsoft.com/en-us/visualstudio/profiling/?view=vs-2022) cover deeper sampling, ETW, and collection options if required.
+TODO
 
 ## Issues
 We use GitHub issues to track public bugs. Please ensure your description is
@@ -460,7 +455,7 @@ This design requirement is fundamental to preserve the portability of the code b
   Any variable that can be `const` (aka. read-only) **must** be `const`.
   Any pointer which content will not be modified must be `const`.
   This property is then controlled at compiler level.
-  `const` variables are an important signal to readers that this variable isn't modified.
+  `const` variables are an important signal to readers that this variable isn’t modified.
   Conversely, non-const variables are a signal to readers to watch out for modifications later on in the function.
 * If a function must be inlined, mention it explicitly,
   using project's own portable macros, such as `FORCE_INLINE_ATTR`,

LICENSE

@@ -2,7 +2,7 @@ BSD License
 
 For Zstandard software
 
-Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved.
+Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
@@ -14,9 +14,9 @@ are permitted provided that the following conditions are met:
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution.
 
- * Neither the name Facebook, nor Meta, nor the names of its contributors may
-   be used to endorse or promote products derived from this software without
-   specific prior written permission.
+ * Neither the name Facebook nor the names of its contributors may be used to
+   endorse or promote products derived from this software without specific
+   prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2015-2021, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -85,10 +85,14 @@ test:
 	$(MAKE) -C $(TESTDIR) $@
 	ZSTD=../../programs/zstd $(MAKE) -C doc/educational_decoder $@
 
+## shortest: same as `make check`
+.PHONY: shortest
+shortest:
+	$(Q)$(MAKE) -C $(TESTDIR) $@
+
 ## check: run basic tests for `zstd` cli
 .PHONY: check
-check:
-	$(Q)$(MAKE) -C $(TESTDIR) $@
+check: shortest
 
 .PHONY: automated_benchmarking
 automated_benchmarking:
@@ -119,7 +123,6 @@ contrib: lib
 	$(MAKE) -C contrib/seekable_format/examples all
 	$(MAKE) -C contrib/seekable_format/tests test
 	$(MAKE) -C contrib/largeNbDicts all
-	$(MAKE) -C contrib/externalSequenceProducer all
 	cd build/single_file_libs/ ; ./build_decoder_test.sh
 	cd build/single_file_libs/ ; ./build_library_test.sh
 
@@ -139,18 +142,14 @@ clean:
 	$(Q)$(MAKE) -C contrib/seekable_format/examples $@ > $(VOID)
 	$(Q)$(MAKE) -C contrib/seekable_format/tests $@ > $(VOID)
 	$(Q)$(MAKE) -C contrib/largeNbDicts $@ > $(VOID)
-	$(Q)$(MAKE) -C contrib/externalSequenceProducer $@ > $(VOID)
 	$(Q)$(RM) zstd$(EXT) zstdmt$(EXT) tmp*
-	$(Q)$(RM) -r lz4 cmakebuild mesonbuild install
+	$(Q)$(RM) -r lz4
 	@echo Cleaning completed
 
-LIBZSTD_MK_DIR = $(ZSTDDIR)
-include $(LIBZSTD_MK_DIR)/install_oses.mk # UNAME, INSTALL_OS_LIST
-
 #------------------------------------------------------------------------------
 # make install is validated only for Linux, macOS, Hurd and some BSD targets
 #------------------------------------------------------------------------------
-ifneq (,$(filter $(INSTALL_OS_LIST),$(UNAME)))
+ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD DragonFly NetBSD MSYS_NT Haiku AIX))
 
 HOST_OS = POSIX
 
@@ -158,7 +157,7 @@ MKDIR ?= mkdir -p
 
 HAVE_COLORNEVER = $(shell echo a | egrep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
 EGREP_OPTIONS ?=
-ifeq ($(HAVE_COLORNEVER), 1)
+ifeq ($HAVE_COLORNEVER, 1)
 EGREP_OPTIONS += --color=never
 endif
 EGREP = egrep $(EGREP_OPTIONS)
@@ -196,27 +195,18 @@ uninstall:
 travis-install:
 	$(MAKE) install PREFIX=~/install_test_dir
 
-.PHONY: clangbuild-darwin-fat
-clangbuild-darwin-fat: clean
-	clang -v
-	CXX=clang++ CC=clang CFLAGS+="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation -arch arm64" $(MAKE) zstd-release
-	mv programs/zstd programs/zstd_arm64
-	CXX=clang++ CC=clang CFLAGS+="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation -arch x86_64" $(MAKE) zstd-release
-	mv programs/zstd programs/zstd_x64
-	lipo -create programs/zstd_x64 programs/zstd_arm64 -output programs/zstd
-
 .PHONY: gcc5build gcc6build gcc7build clangbuild m32build armbuild aarch64build ppcbuild ppc64build
 gcc5build: clean
 	gcc-5 -v
-	CC=gcc-5 $(MAKE) all MOREFLAGS="-Werror $(MOREFLAGS)"
+	CC=gcc-5 $(MAKE) all MOREFLAGS="-Werror"
 
 gcc6build: clean
 	gcc-6 -v
-	CC=gcc-6 $(MAKE) all MOREFLAGS="-Werror $(MOREFLAGS)"
+	CC=gcc-6 $(MAKE) all MOREFLAGS="-Werror"
 
 gcc7build: clean
 	gcc-7 -v
-	CC=gcc-7 $(MAKE) all MOREFLAGS="-Werror $(MOREFLAGS)"
+	CC=gcc-7 $(MAKE) all MOREFLAGS="-Werror"
 
 clangbuild: clean
 	clang -v
@@ -240,17 +230,17 @@ ppc64build: clean
 
 .PHONY: armfuzz aarch64fuzz ppcfuzz ppc64fuzz
 armfuzz: clean
-	CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static MOREFLAGS="-static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)" $(MAKE) -C $(TESTDIR) fuzztest
+	CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
 
 aarch64fuzz: clean
 	ld -v
-	CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static MOREFLAGS="-static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)" $(MAKE) -C $(TESTDIR) fuzztest
+	CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
 
 ppcfuzz: clean
-	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static MOREFLAGS="-static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)" $(MAKE) -C $(TESTDIR) fuzztest
+	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
 
 ppc64fuzz: clean
-	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static MOREFLAGS="-m64 -static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)" $(MAKE) -C $(TESTDIR) fuzztest
+	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static MOREFLAGS="-m64 -static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
 
 .PHONY: cxxtest gcc5test gcc6test armtest aarch64test ppctest ppc64test
 cxxtest: CXXFLAGS += -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror
@@ -259,49 +249,49 @@ cxxtest: clean
 
 gcc5test: clean
 	gcc-5 -v
-	$(MAKE) all CC=gcc-5 MOREFLAGS="-Werror $(MOREFLAGS)"
+	$(MAKE) all CC=gcc-5 MOREFLAGS="-Werror"
 
 gcc6test: clean
 	gcc-6 -v
-	$(MAKE) all CC=gcc-6 MOREFLAGS="-Werror $(MOREFLAGS)"
+	$(MAKE) all CC=gcc-6 MOREFLAGS="-Werror"
 
 armtest: clean
 	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
-	$(MAKE) -C $(TESTDIR) test CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)"
+	$(MAKE) -C $(TESTDIR) test CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static" FUZZER_FLAGS=--no-big-tests
 
 aarch64test:
 	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
-	$(MAKE) -C $(TESTDIR) test CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)"
+	$(MAKE) -C $(TESTDIR) test CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static" FUZZER_FLAGS=--no-big-tests
 
 ppctest: clean
 	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
-	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)"
+	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static" FUZZER_FLAGS=--no-big-tests
 
 ppc64test: clean
 	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
-	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)"
+	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static" FUZZER_FLAGS=--no-big-tests
 
 .PHONY: arm-ppc-compilation
 arm-ppc-compilation:
-	$(MAKE) -C $(PRGDIR) clean zstd CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static $(MOREFLAGS)"
-	$(MAKE) -C $(PRGDIR) clean zstd CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static $(MOREFLAGS)"
-	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static $(MOREFLAGS)"
-	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static $(MOREFLAGS)"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static"
 
 regressiontest:
 	$(MAKE) -C $(FUZZDIR) regressiontest
 
 uasanregressiontest:
-	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=address,undefined -Werror" CXXFLAGS="-O3 -fsanitize=address,undefined -Werror"
+	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=address,undefined" CXXFLAGS="-O3 -fsanitize=address,undefined"
 
 msanregressiontest:
-	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=memory -Werror" CXXFLAGS="-O3 -fsanitize=memory -Werror"
+	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=memory" CXXFLAGS="-O3 -fsanitize=memory"
 
 update_regressionResults : REGRESS_RESULTS_DIR := /tmp/regress_results_dir/
 update_regressionResults:
-	$(MAKE) -j -C programs zstd
-	$(MAKE) -j -C tests/regression test
-	$(RM) -r $(REGRESS_RESULTS_DIR)
+	$(MAKE) -C programs zstd
+	$(MAKE) -C tests/regression test
+	$(RM) -rf $(REGRESS_RESULTS_DIR)
 	$(MKDIR) $(REGRESS_RESULTS_DIR)
 	./tests/regression/test                         \
         --cache  tests/regression/cache             \
@@ -316,37 +306,34 @@ update_regressionResults:
 # run UBsan with -fsanitize-recover=pointer-overflow
 # this only works with recent compilers such as gcc 8+
 usan: clean
-	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=undefined -Werror $(MOREFLAGS)"
+	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=pointer-overflow -fsanitize=undefined -Werror"
 
 asan: clean
-	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=address -Werror $(MOREFLAGS)"
+	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=address -Werror"
 
 asan-%: clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=address -Werror $(MOREFLAGS)" $(MAKE) -C $(TESTDIR) $*
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=address -Werror" $(MAKE) -C $(TESTDIR) $*
 
 msan: clean
-	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer -Werror $(MOREFLAGS)" HAVE_LZMA=0   # datagen.c fails this test for no obvious reason
+	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer -Werror" HAVE_LZMA=0   # datagen.c fails this test for no obvious reason
 
-msan-%:
-	$(MAKE) clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=memory -fno-omit-frame-pointer -Werror $(MOREFLAGS)" FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)" $(MAKE) -j -C $(TESTDIR) HAVE_LZMA=0 $*
+msan-%: clean
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=memory -fno-omit-frame-pointer -Werror" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) HAVE_LZMA=0 $*
 
 asan32: clean
-	$(MAKE) -C $(TESTDIR) test32 CC=clang MOREFLAGS="-g -fsanitize=address $(MOREFLAGS)"
+	$(MAKE) -C $(TESTDIR) test32 CC=clang MOREFLAGS="-g -fsanitize=address"
 
 uasan: clean
-	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=address,undefined -Werror $(MOREFLAGS)"
+	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=pointer-overflow -fsanitize=address,undefined -Werror"
 
 uasan-%: clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=address,undefined -Werror $(MOREFLAGS)" $(MAKE) -C $(TESTDIR) $*
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=pointer-overflow -fsanitize=address,undefined -Werror" $(MAKE) -C $(TESTDIR) $*
 
 tsan-%: clean
-	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=thread -Werror $(MOREFLAGS)" $(MAKE) -C $(TESTDIR) $* FUZZER_FLAGS="--no-big-tests $(FUZZER_FLAGS)"
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=thread -Werror" $(MAKE) -C $(TESTDIR) $* FUZZER_FLAGS=--no-big-tests
 
 .PHONY: apt-install
 apt-install:
-	# TODO: uncomment once issue 3011 is resolved and remove hack from Github Actions .yml
-	# sudo apt-get update
 	sudo apt-get -yq --no-install-suggests --no-install-recommends --force-yes install $(APT_PACKAGES)
 
 .PHONY: apt-add-repo
@@ -354,7 +341,7 @@ apt-add-repo:
 	sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
 	sudo apt-get update -y -qq
 
-.PHONY: ppcinstall arminstall valgrindinstall libc6install gcc6install gcc7install gcc8install gpp6install clang38install
+.PHONY: ppcinstall arminstall valgrindinstall libc6install gcc6install gcc7install gcc8install gpp6install clang38install lz4install
 ppcinstall:
 	APT_PACKAGES="qemu-system-ppc qemu-user-static gcc-powerpc-linux-gnu" $(MAKE) apt-install
 
@@ -382,56 +369,38 @@ gpp6install: apt-add-repo
 clang38install:
 	APT_PACKAGES="clang-3.8" $(MAKE) apt-install
 
+# Ubuntu 14.04 ships a too-old lz4
+lz4install:
+	[ -e lz4 ] || git clone https://github.com/lz4/lz4 && sudo $(MAKE) -C lz4 install
+
 endif
 
 
-ifneq (,$(filter MSYS%,$(shell sh -c 'MSYSTEM="MSYS" uname') ))
+CMAKE_PARAMS = -DZSTD_BUILD_CONTRIB:BOOL=ON -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON -DZSTD_ZLIB_SUPPORT:BOOL=ON -DZSTD_LZMA_SUPPORT:BOOL=ON -DCMAKE_BUILD_TYPE=Release
+
+ifneq (,$(filter MSYS%,$(shell uname)))
 HOST_OS = MSYS
+CMAKE_PARAMS = -G"MSYS Makefiles" -DCMAKE_BUILD_TYPE=Debug -DZSTD_MULTITHREAD_SUPPORT:BOOL=OFF -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON
 endif
 
 #------------------------------------------------------------------------
 # target specific tests
 #------------------------------------------------------------------------
-ifneq (,$(filter MSYS POSIX,$(HOST_OS)))
-
-CMAKE ?= cmake
-CMAKE_PARAMS = -DZSTD_BUILD_CONTRIB:BOOL=ON -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON -DZSTD_ZLIB_SUPPORT:BOOL=ON -DZSTD_LZMA_SUPPORT:BOOL=ON
-
-ifneq (,$(filter MSYS%,$(shell sh -c 'MSYSTEM="MSYS" uname')))
-CMAKE_PARAMS = -G"MSYS Makefiles" -DZSTD_MULTITHREAD_SUPPORT:BOOL=OFF -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON
-endif
-
-.PHONY: cmakebuild
+ifneq (,$(filter $(HOST_OS),MSYS POSIX))
+.PHONY: cmakebuild c89build gnu90build c99build gnu99build c11build bmix64build bmix32build bmi32build staticAnalyze
 cmakebuild:
-	$(CMAKE) --version
-	$(RM) -r cmakebuild install
-	$(MKDIR) cmakebuild install
-	cd cmakebuild; $(CMAKE) -Wdev -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_FLAGS="-Werror -O0" -DCMAKE_INSTALL_PREFIX=install $(CMAKE_PARAMS) ../build/cmake
-	$(CMAKE) --build cmakebuild --target install -- -j V=1
-	cd cmakebuild; ctest -V -L Medium
+	cmake --version
+	$(RM) -r $(BUILDIR)/cmake/build
+	$(MKDIR) $(BUILDIR)/cmake/build
+	cd $(BUILDIR)/cmake/build; cmake -DCMAKE_INSTALL_PREFIX:PATH=~/install_test_dir $(CMAKE_PARAMS) ..
+	$(MAKE) -C $(BUILDIR)/cmake/build -j4;
+	$(MAKE) -C $(BUILDIR)/cmake/build install;
+	$(MAKE) -C $(BUILDIR)/cmake/build uninstall;
+	cd $(BUILDIR)/cmake/build; ctest -V -L Medium
 
-MESON ?= meson
-NINJA ?= ninja
-
-.PHONY: mesonbuild
-mesonbuild:
-	$(MESON) setup \
-		--buildtype=debugoptimized \
-		-Db_lundef=false \
-		-Dauto_features=enabled \
-		-Dbin_programs=true \
-		-Dbin_tests=true \
-		-Dbin_contrib=true \
-		-Ddefault_library=both \
-		build/meson mesonbuild
-	$(NINJA) -C mesonbuild/
-	$(MESON) test -C mesonbuild/ --print-errorlogs
-	$(MESON) install -C mesonbuild --destdir staging/
-
-.PHONY: c89build gnu90build c99build gnu99build c11build bmix64build bmix32build bmi32build staticAnalyze
 c89build: clean
 	$(CC) -v
-	CFLAGS="-std=c89 -Werror -Wno-attributes -Wpedantic -Wno-long-long -Wno-variadic-macros -O0" $(MAKE) lib zstd
+	CFLAGS="-std=c89 -Werror -O0" $(MAKE) allmost  # will fail, due to missing support for `long long`
 
 gnu90build: clean
 	$(CC) -v

README.md

@@ -5,20 +5,23 @@ targeting real-time compression scenarios at zlib-level and better compression r
 It's backed by a very fast entropy stage, provided by [Huff0 and FSE library](https://github.com/Cyan4973/FiniteStateEntropy).
 
 Zstandard's format is stable and documented in [RFC8878](https://datatracker.ietf.org/doc/html/rfc8878). Multiple independent implementations are already available.
-This repository represents the reference implementation, provided as an open-source dual [BSD](LICENSE) OR [GPLv2](COPYING) licensed **C** library,
+This repository represents the reference implementation, provided as an open-source dual [BSD](LICENSE) and [GPLv2](COPYING) licensed **C** library,
 and a command line utility producing and decoding `.zst`, `.gz`, `.xz` and `.lz4` files.
 Should your project require another programming language,
-a list of known ports and bindings is provided on [Zstandard homepage](https://facebook.github.io/zstd/#other-languages).
+a list of known ports and bindings is provided on [Zstandard homepage](http://www.zstd.net/#other-languages).
 
 **Development branch status:**
 
 [![Build Status][travisDevBadge]][travisLink]
+[![Build status][AppveyorDevBadge]][AppveyorLink]
 [![Build status][CircleDevBadge]][CircleLink]
 [![Build status][CirrusDevBadge]][CirrusLink]
 [![Fuzzing Status][OSSFuzzBadge]][OSSFuzzLink]
 
 [travisDevBadge]: https://api.travis-ci.com/facebook/zstd.svg?branch=dev "Continuous Integration test suite"
 [travisLink]: https://travis-ci.com/facebook/zstd
+[AppveyorDevBadge]: https://ci.appveyor.com/api/projects/status/xt38wbdxjk5mrbem/branch/dev?svg=true "Windows test suite"
+[AppveyorLink]: https://ci.appveyor.com/project/YannCollet/zstd-p0yf0
 [CircleDevBadge]: https://circleci.com/gh/facebook/zstd/tree/dev.svg?style=shield "Short test suite"
 [CircleLink]: https://circleci.com/gh/facebook/zstd
 [CirrusDevBadge]: https://api.cirrus-ci.com/github/facebook/zstd.svg?branch=dev
@@ -29,35 +32,36 @@ a list of known ports and bindings is provided on [Zstandard homepage](https://f
 ## Benchmarks
 
 For reference, several fast compression algorithms were tested and compared
-on a desktop featuring a Core i7-9700K CPU @ 4.9GHz
-and running Ubuntu 24.04 (`Linux 6.8.0-53-generic`),
+on a desktop running Ubuntu 20.04 (`Linux 5.11.0-41-generic`),
+with a Core i7-9700K CPU @ 4.9GHz,
 using [lzbench], an open-source in-memory benchmark by @inikep
-compiled with [gcc] 14.2.0,
+compiled with [gcc] 9.3.0,
 on the [Silesia compression corpus].
 
 [lzbench]: https://github.com/inikep/lzbench
-[Silesia compression corpus]: https://sun.aei.polsl.pl//~sdeor/index.php?page=silesia
+[Silesia compression corpus]: http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
 [gcc]: https://gcc.gnu.org/
 
 | Compressor name         | Ratio | Compression| Decompress.|
 | ---------------         | ------| -----------| ---------- |
-| **zstd 1.5.7 -1**       | 2.896 |   510 MB/s |  1550 MB/s |
-| brotli 1.1.0 -1         | 2.883 |   290 MB/s |   425 MB/s |
-| [zlib] 1.3.1 -1         | 2.743 |   105 MB/s |   390 MB/s |
-| **zstd 1.5.7 --fast=1** | 2.439 |   545 MB/s |  1850 MB/s |
-| quicklz 1.5.0 -1        | 2.238 |   520 MB/s |   750 MB/s |
-| **zstd 1.5.7 --fast=4** | 2.146 |   665 MB/s |  2050 MB/s |
-| lzo1x 2.10 -1           | 2.106 |   650 MB/s |   780 MB/s |
-| [lz4] 1.10.0            | 2.101 |   675 MB/s |  3850 MB/s |
-| snappy 1.2.1            | 2.089 |   520 MB/s |  1500 MB/s |
-| lzf 3.6 -1              | 2.077 |   410 MB/s |   820 MB/s |
+| **zstd 1.5.1 -1**       | 2.887 |   530 MB/s |  1700 MB/s |
+| [zlib] 1.2.11 -1        | 2.743 |    95 MB/s |   400 MB/s |
+| brotli 1.0.9 -0         | 2.702 |   395 MB/s |   450 MB/s |
+| **zstd 1.5.1 --fast=1** | 2.437 |   600 MB/s |  2150 MB/s |
+| **zstd 1.5.1 --fast=3** | 2.239 |   670 MB/s |  2250 MB/s |
+| quicklz 1.5.0 -1        | 2.238 |   540 MB/s |   760 MB/s |
+| **zstd 1.5.1 --fast=4** | 2.148 |   710 MB/s |  2300 MB/s |
+| lzo1x 2.10 -1           | 2.106 |   660 MB/s |   845 MB/s |
+| [lz4] 1.9.3             | 2.101 |   740 MB/s |  4500 MB/s |
+| lzf 3.6 -1              | 2.077 |   410 MB/s |   830 MB/s |
+| snappy 1.1.9            | 2.073 |   550 MB/s |  1750 MB/s |
 
-[zlib]: https://www.zlib.net/
-[lz4]: https://lz4.github.io/lz4/
+[zlib]: http://www.zlib.net/
+[lz4]: http://www.lz4.org/
 
 The negative compression levels, specified with `--fast=#`,
 offer faster compression and decompression speed
-at the cost of compression ratio.
+at the cost of compression ratio (compared to level 1).
 
 Zstd can also offer stronger compression ratios at the cost of compression speed.
 Speed vs Compression trade-off is configurable by small increments.
@@ -120,55 +124,23 @@ Dictionary gains are mostly effective in the first few KB. Then, the compression
 
 ## Build instructions
 
-`make` is the main build system of this project.
-It is the reference, and other build systems are periodically updated to stay compatible.
-However, small drifts and feature differences can be present, since perfect synchronization is difficult.
-For this reason, when your build system allows it, prefer employing `make`.
-
 ### Makefile
 
-Assuming your system supports standard `make` (or `gmake`),
-just invoking `make` in root directory generates `zstd` cli at root,
-and also generates `libzstd` into `lib/`.
+If your system is compatible with standard `make` (or `gmake`),
+invoking `make` in root directory will generate `zstd` cli in root directory.
 
-Other standard targets include:
-- `make install` : install zstd cli, library and man pages
-- `make check` : run `zstd`, test its essential behavior on local platform
-
-The `Makefile` follows the [GNU Standard Makefile conventions](https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html),
-allowing staged install, standard compilation flags, directory variables and command variables.
-
-For advanced use cases, specialized flags which control binary generation and installation paths are documented
-in [`lib/README.md`](lib/README.md#modular-build) for the `libzstd` library
-and in [`programs/README.md`](programs/README.md#compilation-variables) for the `zstd` CLI.
+Other available options include:
+- `make install` : create and install zstd cli, library and man pages
+- `make check` : create and run `zstd`, tests its behavior on local platform
 
 ### cmake
 
-A `cmake` project generator is available for generating Makefiles or other build scripts
-to create the `zstd` binary as well as `libzstd` dynamic and static libraries.
-The repository root now contains a minimal `CMakeLists.txt` that forwards to `build/cmake`,
-so you can configure the project with a standard `cmake -S .` invocation,
-while the historical `cmake -S build/cmake` entry point remains fully supported.
-
-```bash
-cmake -S . -B build-cmake
-cmake --build build-cmake
-```
+A `cmake` project generator is provided within `build/cmake`.
+It can generate Makefiles or other build scripts
+to create `zstd` binary, and `libzstd` dynamic and static libraries.
 
 By default, `CMAKE_BUILD_TYPE` is set to `Release`.
 
-#### Support for Fat (Universal2) Output
-
-`zstd` can be built and installed with support for both Apple Silicon (M1/M2) as well as Intel by using CMake's Universal2 support.
-To perform a Fat/Universal2 build and install use the following commands:
-
-```bash
-cmake -S . -B build-cmake-debug -G Ninja -DCMAKE_OSX_ARCHITECTURES="x86_64;x86_64h;arm64"
-cd build-cmake-debug
-ninja
-sudo ninja install
-```
-
 ### Meson
 
 A Meson project is provided within [`build/meson`](build/meson). Follow
@@ -191,54 +163,37 @@ You can build and install zstd [vcpkg](https://github.com/Microsoft/vcpkg/) depe
 The zstd port in vcpkg is kept up to date by Microsoft team members and community contributors.
 If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
 
-### Conan
-
-You can install pre-built binaries for zstd or build it from source using [Conan](https://conan.io/). Use the following command:
-
-```bash
-conan install --requires="zstd/[*]" --build=missing
-```
-
-The zstd Conan recipe is kept up to date by Conan maintainers and community contributors.
-If the version is out of date, please [create an issue or pull request](https://github.com/conan-io/conan-center-index) on the ConanCenterIndex repository.
-
 ### Visual Studio (Windows)
 
 Going into `build` directory, you will find additional possibilities:
-- Projects for Visual Studio 2008 and 2010.
+- Projects for Visual Studio 2005, 2008 and 2010.
   + VS2010 project is compatible with VS2012, VS2013, VS2015 and VS2017.
 - Automated build scripts for Visual compiler by [@KrzysFR](https://github.com/KrzysFR), in `build/VS_scripts`,
   which will build `zstd` cli and `libzstd` library without any need to open Visual Studio solution.
-- It is now recommended to generate Visual Studio solutions from `cmake`
 
 ### Buck
 
 You can build the zstd binary via buck by executing: `buck build programs:zstd` from the root of the repo.
 The output binary will be in `buck-out/gen/programs/`.
 
-### Bazel
-
-You can integrate zstd into your Bazel project by using the module hosted on the [Bazel Central Repository](https://registry.bazel.build/modules/zstd).
-
 ## Testing
 
-You can run quick local smoke tests by running `make check`.
-If you can't use `make`, execute the `playTest.sh` script from the `src/tests` directory.
-Two env variables `$ZSTD_BIN` and `$DATAGEN_BIN` are needed for the test script to locate the `zstd` and `datagen` binary.
-For information on CI testing, please refer to `TESTING.md`.
+You can run quick local smoke tests by executing the `playTest.sh` script from the `src/tests` directory.
+Two env variables `$ZSTD_BIN` and `$DATAGEN_BIN` are needed for the test script to locate the zstd and datagen binary.
+For information on CI testing, please refer to TESTING.md
 
 ## Status
 
-Zstandard is deployed within Meta and many other large cloud infrastructures,
-to compress humongous amounts of data in various formats and use cases.
-It is also continuously fuzzed for security issues by Google's [oss-fuzz](https://github.com/google/oss-fuzz/tree/master/projects/zstd) program.
+Zstandard is currently deployed within Facebook. It is used continuously to compress large amounts of data in multiple formats and use cases.
+Zstandard is considered safe for production environments.
 
 ## License
 
-Zstandard is dual-licensed under [BSD](LICENSE) OR [GPLv2](COPYING).
+Zstandard is dual-licensed under [BSD](LICENSE) and [GPLv2](COPYING).
 
 ## Contributing
 
 The `dev` branch is the one where all contributions are merged before reaching `release`.
+If you plan to propose a patch, please commit into the `dev` branch, or its own feature branch.
 Direct commit to `release` are not permitted.
 For more information, please read [CONTRIBUTING](CONTRIBUTING.md).

SECURITY.md

@@ -1,15 +0,0 @@
-# Reporting and Fixing Security Issues
-
-Please do not open GitHub issues or pull requests - this makes the problem immediately visible to everyone, including malicious actors. Security issues in this open source project can be safely reported via the Meta Bug Bounty program:
-
-https://www.facebook.com/whitehat
-
-Meta's security team will triage your report and determine whether or not is it eligible for a bounty under our program.
-
-# Receiving Vulnerability Notifications
-
-In the case that a significant security vulnerability is reported to us or discovered by us---without being publicly known---we will, at our discretion, notify high-profile, high-exposure users of Zstandard ahead of our public disclosure of the issue and associated fix.
-
-If you believe your project would benefit from inclusion in this list, please reach out to one of the maintainers.
-
-<!-- Note to maintainers: this list is kept [here](https://fburl.com/wiki/cgc1l62x). -->

TESTING.md

@@ -22,7 +22,7 @@ They consist of the following tests:
   - `tests/playTests.sh --test-large-data`
   - Fuzzer tests: `tests/fuzzer.c`, `tests/zstreamtest.c`, and `tests/decodecorpus.c`
 - `tests/zstreamtest.c` under Tsan (streaming mode, including multithreaded mode)
-- Valgrind Test (`make -C tests test-valgrind`) (testing CLI and fuzzer under `valgrind`)
+- Valgrind Test (`make -C tests valgrindTest`) (testing CLI and fuzzer under valgrind)
 - Fuzzer tests (see above) on ARM, AArch64, PowerPC, and PowerPC64
 
 Long Tests

appveyor.yml

@@ -0,0 +1,205 @@
+# Following tests are run _only_ on `release` branch
+# and on selected feature branch named `appveyorTest` or `visual*`
+
+-
+  version: 1.0.{build}
+  branches:
+    only:
+    - release
+    - master
+    - /appveyor*/
+    - /visual*/
+  environment:
+    matrix:
+    - COMPILER: "gcc"
+      HOST:     "mingw"
+      PLATFORM: "x64"
+      SCRIPT:   "make allzstd MOREFLAGS=-static"
+      ARTIFACT: "true"
+      BUILD:    "true"
+    - COMPILER: "gcc"
+      HOST:     "mingw"
+      PLATFORM: "x86"
+      SCRIPT:   "make allzstd MOREFLAGS=-static"
+      ARTIFACT: "true"
+      BUILD:    "true"
+
+    - COMPILER: "clang-cl"
+      HOST:     "cmake-visual"
+      PLATFORM: "x64"
+      CONFIGURATION: "Release"
+      CMAKE_GENERATOR: "Visual Studio 15 2017"
+      CMAKE_GENERATOR_PLATFORM: "x64"
+      CMAKE_GENERATOR_TOOLSET: "LLVM"
+      APPVEYOR_BUILD_WORKER_IMAGE: "Visual Studio 2017"
+
+  install:
+  - ECHO Installing %COMPILER% %PLATFORM% %CONFIGURATION%
+  - SET PATH_ORIGINAL=%PATH%
+  - if [%HOST%]==[mingw] (
+      SET "PATH_MINGW32=C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin" &&
+      SET "PATH_MINGW64=C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin" &&
+      COPY C:\msys64\usr\bin\make.exe C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin\make.exe &&
+      COPY C:\msys64\usr\bin\make.exe C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin\make.exe
+    )
+  - IF [%HOST%]==[visual] IF [%PLATFORM%]==[x64] (
+      SET ADDITIONALPARAM=/p:LibraryPath="C:\Program Files\Microsoft SDKs\Windows\v7.1\lib\x64;c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;C:\Program Files (x86)\Microsoft Visual Studio 10.0\;C:\Program Files (x86)\Microsoft Visual Studio 10.0\lib\amd64;"
+    )
+
+  build_script:
+  - if [%HOST%]==[mingw] (
+      ( if [%PLATFORM%]==[x64] (
+        SET "PATH=%PATH_MINGW64%;%PATH_ORIGINAL%"
+      ) else if [%PLATFORM%]==[x86] (
+        SET "PATH=%PATH_MINGW32%;%PATH_ORIGINAL%"
+      ) )
+    )
+  - if [%HOST%]==[mingw] if [%BUILD%]==[true] (
+      make -v &&
+      sh -c "%COMPILER% -v" &&
+      ECHO Building zlib to static link &&
+      SET "CC=%COMPILER%" &&
+      sh -c "cd .. && git clone --depth 1 --branch v1.2.11 https://github.com/madler/zlib" &&
+      sh -c "cd ../zlib && make -f win32/Makefile.gcc libz.a"
+      ECHO Building zstd &&
+      SET "CPPFLAGS=-I../../zlib" &&
+      SET "LDFLAGS=../../zlib/libz.a" &&
+      sh -c "%SCRIPT%" &&
+      ( if [%COMPILER%]==[gcc] if [%ARTIFACT%]==[true]
+          ECHO Creating artifacts &&
+          ECHO %cd% &&
+          lib\dll\example\build_package.bat &&
+          make -C programs DEBUGFLAGS= clean zstd &&
+          cd programs\ && 7z a -tzip -mx9 zstd-win-binary-%PLATFORM%.zip zstd.exe &&
+          appveyor PushArtifact zstd-win-binary-%PLATFORM%.zip &&
+          cp zstd.exe ..\bin\zstd.exe &&
+          git clone --depth 1 --branch release https://github.com/facebook/zstd &&
+          cd zstd &&
+          git archive --format=tar release -o zstd-src.tar &&
+          ..\zstd -19 zstd-src.tar &&
+          appveyor PushArtifact zstd-src.tar.zst &&
+          certUtil -hashfile zstd-src.tar.zst SHA256 > zstd-src.tar.zst.sha256.sig &&
+          appveyor PushArtifact zstd-src.tar.zst.sha256.sig &&
+          cd ..\..\bin\ &&
+          7z a -tzip -mx9 zstd-win-release-%PLATFORM%.zip * &&
+          appveyor PushArtifact zstd-win-release-%PLATFORM%.zip
+      )
+    )
+  - if [%HOST%]==[cmake-visual] (
+      ECHO *** &&
+      ECHO *** Building %CMAKE_GENERATOR% ^(%CMAKE_GENERATOR_TOOLSET%^) %PLATFORM%\%CONFIGURATION% &&
+      PUSHD build\cmake &&
+      cmake -DBUILD_TESTING=ON . &&
+      cmake --build . --config %CONFIGURATION% -j4 &&
+      POPD &&
+      ECHO ***
+    )
+
+  test_script:
+  - ECHO Testing %COMPILER% %PLATFORM% %CONFIGURATION%
+  - SET "CC=gcc"
+  - SET "CXX=g++"
+  - if [%TEST%]==[cmake] (
+      mkdir build\cmake\build &&
+      cd build\cmake\build &&
+      SET FUZZERTEST=-T2mn &&
+      SET ZSTREAM_TESTTIME=-T2mn &&
+      cmake -G "Visual Studio 14 2015 Win64" .. &&
+      cd ..\..\.. &&
+      make clean
+    )
+
+
+# The following tests are for regular pushes
+# into `dev` or some feature branch
+# There run less tests, for shorter feedback loop
+
+-
+  version: 1.0.{build}
+  environment:
+    matrix:
+    - COMPILER: "visual"
+      HOST:     "visual"
+      PLATFORM: "x64"
+      CONFIGURATION: "Debug"
+    - COMPILER: "visual"
+      HOST:     "visual"
+      PLATFORM: "Win32"
+      CONFIGURATION: "Debug"
+    - COMPILER: "visual"
+      HOST:     "visual"
+      PLATFORM: "x64"
+      CONFIGURATION: "Release"
+    - COMPILER: "visual"
+      HOST:     "visual"
+      PLATFORM: "Win32"
+      CONFIGURATION: "Release"
+
+    - COMPILER: "gcc"
+      HOST:     "cygwin"
+      PLATFORM: "x64"
+
+    - COMPILER: "clang-cl"
+      HOST:     "cmake-visual"
+      PLATFORM: "x64"
+      CONFIGURATION: "Release"
+      CMAKE_GENERATOR: "Visual Studio 15 2017"
+      CMAKE_GENERATOR_PLATFORM: "x64"
+      CMAKE_GENERATOR_TOOLSET: "LLVM"
+      APPVEYOR_BUILD_WORKER_IMAGE: "Visual Studio 2017"
+
+  install:
+  - ECHO Installing %COMPILER% %PLATFORM% %CONFIGURATION%
+  - SET PATH_ORIGINAL=%PATH%
+  - if [%HOST%]==[cygwin] (
+      ECHO Installing Cygwin Packages &&
+      C:\cygwin64\setup-x86_64.exe -qnNdO -R "C:\cygwin64" -g -P ^
+        gcc,^
+        cmake,^
+        make
+    )
+  - IF [%HOST%]==[visual] IF [%PLATFORM%]==[x64] (
+      SET ADDITIONALPARAM=/p:LibraryPath="C:\Program Files\Microsoft SDKs\Windows\v7.1\lib\x64;c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;C:\Program Files (x86)\Microsoft Visual Studio 10.0\;C:\Program Files (x86)\Microsoft Visual Studio 10.0\lib\amd64;"
+    )
+
+  build_script:
+  - ECHO Building %COMPILER% %PLATFORM% %CONFIGURATION%
+  - if [%HOST%]==[cygwin] (
+      set CHERE_INVOKING=yes &&
+      set CC=%COMPILER% &&
+      C:\cygwin64\bin\bash --login -c "
+        set -e;
+        cd build/cmake;
+        CFLAGS='-Werror' cmake -G 'Unix Makefiles' -DCMAKE_BUILD_TYPE=Debug -DZSTD_BUILD_TESTS:BOOL=ON -DZSTD_FUZZER_FLAGS=-T20s -DZSTD_ZSTREAM_FLAGS=-T20s -DZSTD_FULLBENCH_FLAGS=-i0 .;
+        make VERBOSE=1 -j;
+        ctest -V -L Medium;
+      "
+    )
+  - if [%HOST%]==[cmake-visual] (
+      ECHO *** &&
+      ECHO *** Building %CMAKE_GENERATOR% ^(%CMAKE_GENERATOR_TOOLSET%^) %PLATFORM%\%CONFIGURATION% &&
+      PUSHD build\cmake &&
+      cmake -DBUILD_TESTING=ON . &&
+      cmake --build . --config %CONFIGURATION% -j4 &&
+      POPD &&
+      ECHO ***
+    )
+  - if [%HOST%]==[visual] (
+      ECHO *** &&
+      ECHO *** Building Visual Studio 2012 %PLATFORM%\%CONFIGURATION% &&
+      ECHO *** &&
+      msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
+      msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe
+    )
+
+
+  test_script:
+  - ECHO Testing %COMPILER% %PLATFORM% %CONFIGURATION%
+  - SET "FUZZERTEST=-T10s"
+  - if [%HOST%]==[mingw] (
+      set "CC=%COMPILER%" &&
+      make clean &&
+      make check
+    )

build/VS2008/zstd/zstd.vcproj

@@ -45,7 +45,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\dictBuilder;$(SolutionDir)..\..\lib\compress"
-				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -122,7 +122,7 @@
 				EnableIntrinsicFunctions="true"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\dictBuilder;$(SolutionDir)..\..\lib\compress"
-				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
@@ -197,7 +197,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\dictBuilder;$(SolutionDir)..\..\lib\compress"
-				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -275,7 +275,7 @@
 				EnableIntrinsicFunctions="true"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\dictBuilder;$(SolutionDir)..\..\lib\compress"
-				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
@@ -356,10 +356,6 @@
 				RelativePath="..\..\..\programs\dibio.c"
 				>
 			</File>
-			<File
-				RelativePath="..\..\..\programs\lorem.c"
-				>
-			</File>
 			<File
 				RelativePath="..\..\..\lib\dictBuilder\cover.c"
 				>
@@ -388,10 +384,6 @@
 				RelativePath="..\..\..\programs\fileio.c"
 				>
 			</File>
-			<File
-                RelativePath="..\..\..\programs\fileio_asyncio.c"
-                >
-            </File>
 			<File
 				RelativePath="..\..\..\lib\compress\fse_compress.c"
 				>

build/VS2008/zstdlib/zstdlib.vcproj

@@ -45,7 +45,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\programs\legacy;$(SolutionDir)..\..\lib\dictBuilder"
-				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -121,7 +121,7 @@
 				EnableIntrinsicFunctions="true"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\programs\legacy;$(SolutionDir)..\..\lib\dictBuilder"
-				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
@@ -195,7 +195,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\programs\legacy;$(SolutionDir)..\..\lib\dictBuilder"
-				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -272,7 +272,7 @@
 				EnableIntrinsicFunctions="true"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="$(SolutionDir)..\..\lib;$(SolutionDir)..\..\lib\common;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\programs\legacy;$(SolutionDir)..\..\lib\dictBuilder"
-				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE"
+				PreprocessorDefinitions="ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"

build/VS2010/datagen/datagen.vcxproj

@@ -157,8 +157,6 @@
   <ItemGroup>
     <ClCompile Include="..\..\..\programs\util.c" />
     <ClCompile Include="..\..\..\programs\datagen.c" />
-    <ClCompile Include="..\..\..\programs\lorem.c" />
-    <ClCompile Include="..\..\..\tests\loremOut.c" />
     <ClCompile Include="..\..\..\tests\datagencli.c" />
   </ItemGroup>
   <ItemGroup>

build/VS2010/fullbench-dll/fullbench-dll.vcxproj

@@ -0,0 +1,189 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{00000000-1CC8-4FD7-9281-6B8DBB9D3DF8}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>fullbench-dll</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <IncludePath>$(IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\common;$(UniversalCRT_IncludePath);</IncludePath>
+    <RunCodeAnalysis>false</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <IncludePath>$(IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\common;$(UniversalCRT_IncludePath);</IncludePath>
+    <RunCodeAnalysis>false</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <IncludePath>$(IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\common;$(UniversalCRT_IncludePath);</IncludePath>
+    <RunCodeAnalysis>false</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <IncludePath>$(IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(SolutionDir)..\..\lib\legacy;$(SolutionDir)..\..\lib\common;$(UniversalCRT_IncludePath);</IncludePath>
+    <RunCodeAnalysis>false</RunCodeAnalysis>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;ZSTD_DLL_IMPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>$(SolutionDir)bin\$(Platform)_$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libzstd.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <ImageHasSafeExceptionHandlers>false</ImageHasSafeExceptionHandlers>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;ZSTD_DLL_IMPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>$(SolutionDir)bin\$(Platform)_$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libzstd.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;ZSTD_DLL_IMPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <EnablePREfast>false</EnablePREfast>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)bin\$(Platform)_$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libzstd.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <ImageHasSafeExceptionHandlers>false</ImageHasSafeExceptionHandlers>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;ZSTD_DLL_IMPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)bin\$(Platform)_$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libzstd.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\common\xxhash.c" />
+    <ClCompile Include="..\..\..\programs\util.c" />
+    <ClCompile Include="..\..\..\programs\timefn.c" />
+    <ClCompile Include="..\..\..\programs\datagen.c" />
+    <ClCompile Include="..\..\..\programs\benchfn.c" />
+    <ClCompile Include="..\..\..\tests\fullbench.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\zstd.h" />
+    <ClInclude Include="..\..\..\programs\datagen.h" />
+    <ClInclude Include="..\..\..\programs\benchfn.h" />
+    <ClInclude Include="..\..\..\programs\util.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\libzstd-dll\libzstd-dll.vcxproj">
+      <Project>{00000000-94d5-4bf9-8a50-7bd9929a0850}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

build/VS2010/fullbench/fullbench.vcxproj

@@ -170,7 +170,6 @@
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_literals.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_sequences.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_superblock.c" />
-    <ClCompile Include="..\..\..\lib\compress\zstd_preSplit.c" />
     <ClCompile Include="..\..\..\lib\compress\zstdmt_compress.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_double_fast.c" />
@@ -184,7 +183,6 @@
     <ClCompile Include="..\..\..\programs\util.c" />
     <ClCompile Include="..\..\..\programs\timefn.c" />
     <ClCompile Include="..\..\..\programs\datagen.c" />
-    <ClCompile Include="..\..\..\programs\lorem.c" />
     <ClCompile Include="..\..\..\programs\benchfn.c" />
     <ClCompile Include="..\..\..\tests\fullbench.c" />
   </ItemGroup>

build/VS2010/fuzzer/fuzzer.vcxproj

@@ -170,7 +170,6 @@
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_literals.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_sequences.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_superblock.c" />
-    <ClCompile Include="..\..\..\lib\compress\zstd_preSplit.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_double_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_lazy.c" />

build/VS2010/libzstd-dll/libzstd-dll.rc

@@ -32,11 +32,11 @@ BEGIN
     BEGIN
         BLOCK "040904B0"
         BEGIN
-            VALUE "CompanyName", "Meta Platforms, Inc."
+            VALUE "CompanyName", "Yann Collet, Facebook, Inc."
             VALUE "FileDescription", "Zstandard - Fast and efficient compression algorithm"
             VALUE "FileVersion", ZSTD_VERSION_STRING
             VALUE "InternalName", "libzstd.dll"
-            VALUE "LegalCopyright", "Copyright (c) Meta Platforms, Inc. and affiliates."
+            VALUE "LegalCopyright", "Copyright (c) 2013-present, Yann Collet, Facebook, Inc."
             VALUE "OriginalFilename", "libzstd.dll"
             VALUE "ProductName", "Zstandard"
             VALUE "ProductVersion", ZSTD_VERSION_STRING

build/VS2010/libzstd-dll/libzstd-dll.vcxproj

@@ -34,7 +34,6 @@
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_literals.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_sequences.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_superblock.c" />
-    <ClCompile Include="..\..\..\lib\compress\zstd_preSplit.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_double_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_lazy.c" />
@@ -169,7 +168,8 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
@@ -188,7 +188,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>true</TreatWarningAsError>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -208,7 +208,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <EnablePREfast>false</EnablePREfast>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
@@ -229,7 +229,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_DLL_EXPORT=1;ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>false</TreatWarningAsError>
       <EnablePREfast>false</EnablePREfast>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>

build/VS2010/libzstd/libzstd.vcxproj

@@ -34,7 +34,6 @@
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_literals.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_sequences.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_superblock.c" />
-    <ClCompile Include="..\..\..\lib\compress\zstd_preSplit.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_double_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_lazy.c" />
@@ -162,7 +161,8 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
@@ -181,7 +181,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>true</TreatWarningAsError>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -201,7 +201,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <EnablePREfast>false</EnablePREfast>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
@@ -222,7 +222,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>false</TreatWarningAsError>
       <EnablePREfast>false</EnablePREfast>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>

build/VS2010/zstd.sln

@@ -7,6 +7,11 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fuzzer", "fuzzer\fuzzer.vcx
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fullbench", "fullbench\fullbench.vcxproj", "{61ABD629-1CC8-4FD7-9281-6B8DBB9D3DF8}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fullbench-dll", "fullbench-dll\fullbench-dll.vcxproj", "{00000000-1CC8-4FD7-9281-6B8DBB9D3DF8}"
+	ProjectSection(ProjectDependencies) = postProject
+		{00000000-94D5-4BF9-8A50-7BD9929A0850} = {00000000-94D5-4BF9-8A50-7BD9929A0850}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "datagen", "datagen\datagen.vcxproj", "{037E781E-81A6-494B-B1B3-438AB1200523}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libzstd", "libzstd\libzstd.vcxproj", "{8BFD8150-94D5-4BF9-8A50-7BD9929A0850}"

build/VS2010/zstd/zstd.rc

@@ -32,11 +32,11 @@ BEGIN
     BEGIN
         BLOCK "040904B0"
         BEGIN
-            VALUE "CompanyName", "Meta Platforms, Inc."
+            VALUE "CompanyName", "Yann Collet, Facebook, Inc."
             VALUE "FileDescription", "Zstandard - Fast and efficient compression algorithm"
             VALUE "FileVersion", ZSTD_VERSION_STRING
             VALUE "InternalName", "zstd.exe"
-            VALUE "LegalCopyright", "Copyright (c) Meta Platforms, Inc. and affiliates."
+            VALUE "LegalCopyright", "Copyright (c) 2013-present, Yann Collet, Facebook, Inc."
             VALUE "OriginalFilename", "zstd.exe"
             VALUE "ProductName", "Zstandard"
             VALUE "ProductVersion", ZSTD_VERSION_STRING

build/VS2010/zstd/zstd.vcxproj

@@ -35,7 +35,6 @@
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_literals.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_sequences.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_compress_superblock.c" />
-    <ClCompile Include="..\..\..\lib\compress\zstd_preSplit.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_double_fast.c" />
     <ClCompile Include="..\..\..\lib\compress\zstd_lazy.c" />
@@ -63,8 +62,6 @@
     <ClCompile Include="..\..\..\programs\datagen.c" />
     <ClCompile Include="..\..\..\programs\dibio.c" />
     <ClCompile Include="..\..\..\programs\fileio.c" />
-    <ClCompile Include="..\..\..\programs\fileio_asyncio.c" />
-    <ClCompile Include="..\..\..\programs\lorem.c" />
     <ClCompile Include="..\..\..\programs\zstdcli.c" />
     <ClCompile Include="..\..\..\programs\zstdcli_trace.c" />
   </ItemGroup>
@@ -116,7 +113,6 @@
     <RootNamespace>zstd</RootNamespace>
     <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
     <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
-    <InstructionSet>NotSet</InstructionSet>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -187,10 +183,9 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>true</TreatWarningAsError>
       <EnablePREfast>false</EnablePREfast>
-      <EnableEnhancedInstructionSet>$(InstructionSet)</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -204,10 +199,9 @@
       </PrecompiledHeader>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>true</TreatWarningAsError>
       <EnablePREfast>false</EnablePREfast>
-      <EnableEnhancedInstructionSet>$(InstructionSet)</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -223,11 +217,10 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <EnablePREfast>false</EnablePREfast>
       <TreatWarningAsError>false</TreatWarningAsError>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <EnableEnhancedInstructionSet>$(InstructionSet)</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -245,12 +238,11 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=0;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>ZSTD_MULTITHREAD=1;ZSTD_LEGACY_SUPPORT=5;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <TreatWarningAsError>false</TreatWarningAsError>
       <EnablePREfast>false</EnablePREfast>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <AdditionalOptions>/DZSTD_MULTITHREAD %(AdditionalOptions)</AdditionalOptions>
-      <EnableEnhancedInstructionSet>$(InstructionSet)</EnableEnhancedInstructionSet>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>

build/VS_scripts/build.VSPreview.cmd

@@ -1,7 +0,0 @@
-@echo off
-
-rem build 32-bit
-call "%~p0%build.generic.cmd" preview Win32 Release v143
-
-rem build 64-bit
-call "%~p0%build.generic.cmd" preview x64 Release v143

build/VS_scripts/build.generic.cmd

@@ -2,7 +2,7 @@
 
 IF "%1%" == "" GOTO display_help
 
-SETLOCAL ENABLEDELAYEDEXPANSION
+SETLOCAL
 
 SET msbuild_version=%1
 
@@ -19,34 +19,39 @@ GOTO build
 :display_help
 
 echo Syntax: build.generic.cmd msbuild_version msbuild_platform msbuild_configuration msbuild_toolset
-echo   msbuild_version:          VS installed version (latest, VS2012, VS2013, VS2015, VS2017, VS2019, VS2022, ...)
+echo   msbuild_version:          VS installed version (VS2012, VS2013, VS2015, VS2017, VS2019, ...)
 echo   msbuild_platform:         Platform (x64 or Win32)
 echo   msbuild_configuration:    VS configuration (Release or Debug)
-echo   msbuild_toolset:          Platform Toolset (v100, v110, v120, v140, v141, v142, v143, ...)
+echo   msbuild_toolset:          Platform Toolset (v100, v110, v120, v140, v141, v142, ...)
 
 EXIT /B 1
 
 :build
 
 SET msbuild="%windir%\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
+SET msbuild_vs2017community="%programfiles(x86)%\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\MSBuild.exe"
+SET msbuild_vs2017professional="%programfiles(x86)%\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin\MSBuild.exe"
+SET msbuild_vs2017enterprise="%programfiles(x86)%\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\MSBuild.exe"
 IF %msbuild_version% == VS2013 SET msbuild="%programfiles(x86)%\MSBuild\12.0\Bin\MSBuild.exe"
 IF %msbuild_version% == VS2015 SET msbuild="%programfiles(x86)%\MSBuild\14.0\Bin\MSBuild.exe"
-IF %msbuild_version% == VS2017 SET vswhere_params=-version [15,16) -products *
-IF %msbuild_version% == VS2017Community SET vswhere_params=-version [15,16) -products Community
-IF %msbuild_version% == VS2017Enterprise SET vswhere_params=-version [15,16) -products Enterprise
-IF %msbuild_version% == VS2017Professional SET vswhere_params=-version [15,16) -products Professional
-IF %msbuild_version% == VS2019 SET vswhere_params=-version [16,17) -products *
-IF %msbuild_version% == VS2022 SET vswhere_params=-version [17,18) -products *
-REM Add the next Visual Studio version here.
-IF %msbuild_version% == latest SET vswhere_params=-latest -products *
-IF %msbuild_version% == preview SET vswhere_params=-prerelease -products *
-
-IF NOT DEFINED vswhere_params GOTO skip_vswhere
-SET vswhere="%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
-FOR /F "USEBACKQ TOKENS=*" %%F IN (`%vswhere% !vswhere_params! -requires Microsoft.Component.MSBuild -find MSBuild\**\Bin\MSBuild.exe`) DO (
-	SET msbuild="%%F"
+IF %msbuild_version% == VS2017Community SET msbuild=%msbuild_vs2017community%
+IF %msbuild_version% == VS2017Professional SET msbuild=%msbuild_vs2017professional%
+IF %msbuild_version% == VS2017Enterprise SET msbuild=%msbuild_vs2017enterprise%
+IF %msbuild_version% == VS2017 (
+	IF EXIST %msbuild_vs2017community% SET msbuild=%msbuild_vs2017community%
+	IF EXIST %msbuild_vs2017professional% SET msbuild=%msbuild_vs2017professional%
+	IF EXIST %msbuild_vs2017enterprise% SET msbuild=%msbuild_vs2017enterprise%
+)
+
+:: VS2019
+SET msbuild_vs2019community="%programfiles(x86)%\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe"
+SET msbuild_vs2019professional="%programfiles(x86)%\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\MSBuild.exe"
+SET msbuild_vs2019enterprise="%programfiles(x86)%\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe"
+IF %msbuild_version% == VS2019 (
+	IF EXIST %msbuild_vs2019community% SET msbuild=%msbuild_vs2019community%
+	IF EXIST %msbuild_vs2019professional% SET msbuild=%msbuild_vs2019professional%
+	IF EXIST %msbuild_vs2019enterprise% SET msbuild=%msbuild_vs2019enterprise%
 )
-:skip_vswhere
 
 SET project="%~p0\..\VS2010\zstd.sln"
 

build/cmake/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -7,75 +7,203 @@
 # in the COPYING file in the root directory of this source tree).
 # ################################################################
 
-cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
+cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+  
+# As of 2018-12-26 ZSTD has been validated to build with cmake version 3.13.2 new policies. 
+# Set and use the newest cmake policies that are validated to work 
+set(ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION "3") 
+set(ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION "13") #Policies never changed at PATCH level
+if("${CMAKE_MAJOR_VERSION}" LESS 3)
+  set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}") 
+elseif( "${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}" EQUAL "${CMAKE_MAJOR_VERSION}" AND 
+        "${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}" GREATER "${CMAKE_MINOR_VERSION}")
+    set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}") 
+else() 
+    set(ZSTD_CMAKE_POLICY_VERSION "${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}.${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}.0") 
+endif()
+cmake_policy(VERSION ${ZSTD_CMAKE_POLICY_VERSION})
+
+set(CMAKE_BUILD_WITH_INSTALL_RPATH on)
 
-#-----------------------------------------------------------------------------
-# Setup CMake environment
-#-----------------------------------------------------------------------------
-set(CMAKE_BUILD_WITH_INSTALL_RPATH ON)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
-
-# Define project paths
 set(ZSTD_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
 set(LIBRARY_DIR ${ZSTD_SOURCE_DIR}/lib)
+# Parse version
+include(GetZstdLibraryVersion)
+GetZstdLibraryVersion(${LIBRARY_DIR}/zstd.h zstd_VERSION_MAJOR zstd_VERSION_MINOR zstd_VERSION_PATCH)
 
-#-----------------------------------------------------------------------------
-# Configure CMake policies and version
-#-----------------------------------------------------------------------------
-include(ZstdVersion)
+if( CMAKE_MAJOR_VERSION LESS 3 )
+  ## Provide cmake 3+ behavior for older versions of cmake
+  project(zstd)
+  set(PROJECT_VERSION_MAJOR ${zstd_VERSION_MAJOR})
+  set(PROJECT_VERSION_MINOR ${zstd_VERSION_MINOR})
+  set(PROJECT_VERSION_PATCH ${zstd_VERSION_PATCH})
+  set(PROJECT_VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}")
+  enable_language(C)   # Main library is in C
+  enable_language(CXX) # Testing contributed code also utilizes CXX
+else()
+  project(zstd
+    VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}"
+    LANGUAGES C   # Main library is in C
+              CXX # Testing contributed code also utilizes CXX
+    )
+endif()
+message(STATUS "ZSTD VERSION: ${zstd_VERSION}")
+set(zstd_HOMEPAGE_URL "http://www.zstd.net")
+set(zstd_DESCRIPTION  "Zstandard is a real-time compression algorithm, providing high compression ratios.")
 
-#-----------------------------------------------------------------------------
-# Project declaration
-#-----------------------------------------------------------------------------
-project(zstd
-    VERSION "${ZSTD_FULL_VERSION}"
-    LANGUAGES C   # Main library is in C and ASM, ASM is enabled conditionally
-    HOMEPAGE_URL "${zstd_HOMEPAGE_URL}"
-    DESCRIPTION "${zstd_DESCRIPTION}"
-)
-
-#-----------------------------------------------------------------------------
-# Build type configuration
-#-----------------------------------------------------------------------------
+# Set a default build type if none was specified
 if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-    message(STATUS "Setting build type to 'Release' as none was specified.")
-    set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
-    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
+  message(STATUS "Setting build type to 'Release' as none was specified.")
+  set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
+  # Set the possible values of build type for cmake-gui
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
 endif()
 
-#-----------------------------------------------------------------------------
-# Include standard modules
-#-----------------------------------------------------------------------------
 include(GNUInstallDirs)
 
 #-----------------------------------------------------------------------------
-# Display installation information
+# Add extra compilation flags
+#-----------------------------------------------------------------------------
+include(AddZstdCompilationFlags)
+ADD_ZSTD_COMPILATION_FLAGS()
+
+# Always hide XXHash symbols
+add_definitions(-DXXH_NAMESPACE=ZSTD_)
+
+#-----------------------------------------------------------------------------
+# Installation variables
 #-----------------------------------------------------------------------------
 message(STATUS "CMAKE_INSTALL_PREFIX: ${CMAKE_INSTALL_PREFIX}")
 message(STATUS "CMAKE_INSTALL_LIBDIR: ${CMAKE_INSTALL_LIBDIR}")
 
 #-----------------------------------------------------------------------------
-# Configure build options
+# Options
 #-----------------------------------------------------------------------------
-include(ZstdOptions)
+
+# Legacy support
+option(ZSTD_LEGACY_SUPPORT "LEGACY SUPPORT" OFF)
+
+if (ZSTD_LEGACY_SUPPORT)
+    message(STATUS "ZSTD_LEGACY_SUPPORT defined!")
+    add_definitions(-DZSTD_LEGACY_SUPPORT=5)
+else ()
+    message(STATUS "ZSTD_LEGACY_SUPPORT not defined!")
+    add_definitions(-DZSTD_LEGACY_SUPPORT=0)
+endif ()
+
+if (ANDROID)
+    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT OFF)
+else()
+    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT ON)
+endif()
+
+# Multi-threading support
+option(ZSTD_MULTITHREAD_SUPPORT "MULTITHREADING SUPPORT" ${ZSTD_MULTITHREAD_SUPPORT_DEFAULT})
+
+if (ZSTD_MULTITHREAD_SUPPORT)
+    message(STATUS "ZSTD_MULTITHREAD_SUPPORT is enabled")
+else ()
+    message(STATUS "ZSTD_MULTITHREAD_SUPPORT is disabled")
+endif ()
+
+option(ZSTD_BUILD_PROGRAMS "BUILD PROGRAMS" ON)
+option(ZSTD_BUILD_CONTRIB "BUILD CONTRIB" OFF)
+
+# Respect the conventional CMake option for enabling tests if it was specified on the first configure
+if (BUILD_TESTING)
+    set(ZSTD_BUILD_TESTS_default ON)
+else()
+    set(ZSTD_BUILD_TESTS_default OFF)
+endif()
+option(ZSTD_BUILD_TESTS "BUILD TESTS" ${ZSTD_BUILD_TESTS_default})
+if (MSVC)
+    option(ZSTD_USE_STATIC_RUNTIME "LINK TO STATIC RUN-TIME LIBRARIES" OFF)
+endif ()
 
 #-----------------------------------------------------------------------------
-# Configure compilation flags
+# External dependencies
 #-----------------------------------------------------------------------------
-include(AddZstdCompilationFlags)
-ADD_ZSTD_COMPILATION_FLAGS(ON ZSTD_ENABLE_CXX ON)
+if (ZSTD_MULTITHREAD_SUPPORT AND UNIX)
+    set(THREADS_PREFER_PTHREAD_FLAG ON)
+    find_package(Threads REQUIRED)
+    if(CMAKE_USE_PTHREADS_INIT)
+        set(THREADS_LIBS "${CMAKE_THREAD_LIBS_INIT}")
+    else()
+        message(SEND_ERROR "ZSTD currently does not support thread libraries other than pthreads")
+    endif()
+endif ()
 
 #-----------------------------------------------------------------------------
-# Configure dependencies
+# Add source directories
 #-----------------------------------------------------------------------------
-include(ZstdDependencies)
+add_subdirectory(lib)
+
+option(ZSTD_PROGRAMS_LINK_SHARED "PROGRAMS LINK SHARED" OFF)
+
+if (ZSTD_BUILD_PROGRAMS)
+    if (NOT ZSTD_BUILD_STATIC AND NOT ZSTD_PROGRAMS_LINK_SHARED)
+        message(SEND_ERROR "You need to build static library to build zstd CLI")
+    elseif(NOT ZSTD_BUILD_SHARED AND ZSTD_PROGRAMS_LINK_SHARED)
+        message(SEND_ERROR "You need to build shared library to build zstd CLI")
+    endif ()
+
+    add_subdirectory(programs)
+endif ()
+
+if (ZSTD_BUILD_TESTS)
+    enable_testing()
+    if (NOT ZSTD_BUILD_STATIC)
+        message(SEND_ERROR "You need to build static library to build tests")
+    endif ()
+
+    add_subdirectory(tests)
+endif ()
+
+if (ZSTD_BUILD_CONTRIB)
+    add_subdirectory(contrib)
+endif ()
 
 #-----------------------------------------------------------------------------
-# Configure build targets
+# Add clean-all target
 #-----------------------------------------------------------------------------
-include(ZstdBuild)
+add_custom_target(clean-all
+   COMMAND ${CMAKE_BUILD_TOOL} clean
+   COMMAND rm -rf ${CMAKE_BINARY_DIR}/
+)
 
 #-----------------------------------------------------------------------------
-# Configure package generation
+# Generate Package Config files
+#
+# This section is based on the boiler plate code from:
+# https://cmake.org/cmake/help/latest/manual/cmake-packages.7.html#creating-packages
 #-----------------------------------------------------------------------------
-include(ZstdPackage)
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
+    VERSION ${zstd_VERSION}
+    COMPATIBILITY SameMajorVersion
+    )
+
+# A Package Config file that works from the build directory
+export(EXPORT zstdExports
+    FILE "${CMAKE_CURRENT_BINARY_DIR}/zstdTargets.cmake"
+    NAMESPACE zstd::
+    )
+configure_file(zstdConfig.cmake
+    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfig.cmake"
+    COPYONLY
+    )
+
+# A Package Config file that works from the installation directory
+set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/zstd)
+install(EXPORT zstdExports
+    FILE zstdTargets.cmake
+    NAMESPACE zstd::
+    DESTINATION ${ConfigPackageLocation}
+    )
+install(FILES
+    zstdConfig.cmake
+    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
+    DESTINATION ${ConfigPackageLocation}
+    )

build/cmake/CMakeModules/AddZstdCompilationFlags.cmake

@@ -1,18 +1,7 @@
+include(CheckCXXCompilerFlag)
 include(CheckCCompilerFlag)
-if(CMAKE_CXX_COMPILER)
-    include(CheckCXXCompilerFlag)
-endif()
 
-if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.18)
-    set(ZSTD_HAVE_CHECK_LINKER_FLAG true)
-else ()
-    set(ZSTD_HAVE_CHECK_LINKER_FLAG false)
-endif ()
-if (ZSTD_HAVE_CHECK_LINKER_FLAG)
-    include(CheckLinkerFlag)
-endif()
-
-function(EnableCompilerFlag _flag _C _CXX _LD)
+function(EnableCompilerFlag _flag _C _CXX)
     string(REGEX REPLACE "\\+" "PLUS" varname "${_flag}")
     string(REGEX REPLACE "[^A-Za-z0-9]+" "_" varname "${varname}")
     string(REGEX REPLACE "^_+" "" varname "${varname}")
@@ -23,93 +12,49 @@ function(EnableCompilerFlag _flag _C _CXX _LD)
             set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flag}" PARENT_SCOPE)
         endif ()
     endif ()
-    if (_CXX AND CMAKE_CXX_COMPILER)
+    if (_CXX)
         CHECK_CXX_COMPILER_FLAG(${_flag} CXX_FLAG_${varname})
         if (CXX_FLAG_${varname})
             set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flag}" PARENT_SCOPE)
         endif ()
     endif ()
-    if (_LD)
-        # We never add a linker flag with CMake < 3.18. We will
-        # implement CHECK_LINKER_FLAG() like feature for CMake < 3.18
-        # or require CMake >= 3.18 when we need to add a required
-        # linker flag in future.
-        #
-        # We also skip linker flags check for MSVC compilers (which includes
-        # clang-cl) since currently check_linker_flag() doesn't give correct
-        # results for this configuration,
-        # see: https://gitlab.kitware.com/cmake/cmake/-/issues/22023
-        if (ZSTD_HAVE_CHECK_LINKER_FLAG AND NOT MSVC)
-            CHECK_LINKER_FLAG(C ${_flag} LD_FLAG_${varname})
-        else ()
-            set(LD_FLAG_${varname} false)
-        endif ()
-        if (LD_FLAG_${varname})
-            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_flag}" PARENT_SCOPE)
-            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${_flag}" PARENT_SCOPE)
-        endif ()
-    endif ()
 endfunction()
 
-macro(ADD_ZSTD_COMPILATION_FLAGS _C _CXX _LD)
-    # We set ZSTD_HAS_NOEXECSTACK if we are certain we've set all the required
-    # compiler flags to mark the stack as non-executable.
-    set(ZSTD_HAS_NOEXECSTACK false)
-
+macro(ADD_ZSTD_COMPILATION_FLAGS)
     if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" OR MINGW) #Not only UNIX but also WIN32 for MinGW
-        # It's possible to select the exact standard used for compilation.
-        # It's not necessary, but can be employed for specific purposes.
-        # Note that zstd source code is compatible with both C++98 and above
-        # and C-gnu90 (c90 + long long + variadic macros ) and above
-        # EnableCompilerFlag("-std=c++11" false true) # Set C++ compilation to c++11 standard
-        # EnableCompilerFlag("-std=c99" true false)   # Set C compilation to c99 standard
+        #Set c++11 by default
+        EnableCompilerFlag("-std=c++11" false true)
+        #Set c99 by default
+        EnableCompilerFlag("-std=c99" true false)
         if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND MSVC)
             # clang-cl normally maps -Wall to -Weverything.
-            EnableCompilerFlag("/clang:-Wall" _C _CXX false)
+            EnableCompilerFlag("/clang:-Wall" true true)
         else ()
-            EnableCompilerFlag("-Wall" _C _CXX false)
+            EnableCompilerFlag("-Wall" true true)
         endif ()
-        EnableCompilerFlag("-Wextra" _C _CXX false)
-        EnableCompilerFlag("-Wundef" _C _CXX false)
-        EnableCompilerFlag("-Wshadow" _C _CXX false)
-        EnableCompilerFlag("-Wcast-align" _C _CXX false)
-        EnableCompilerFlag("-Wcast-qual" _C _CXX false)
-        EnableCompilerFlag("-Wstrict-prototypes" _C false false)
+        EnableCompilerFlag("-Wextra" true true)
+        EnableCompilerFlag("-Wundef" true true)
+        EnableCompilerFlag("-Wshadow" true true)
+        EnableCompilerFlag("-Wcast-align" true true)
+        EnableCompilerFlag("-Wcast-qual" true true)
+        EnableCompilerFlag("-Wstrict-prototypes" true false)
         # Enable asserts in Debug mode
         if (CMAKE_BUILD_TYPE MATCHES "Debug")
-            EnableCompilerFlag("-DDEBUGLEVEL=1" _C _CXX false)
+            EnableCompilerFlag("-DDEBUGLEVEL=1" true true)
         endif ()
-        # Add noexecstack flags
-        # LDFLAGS
-        EnableCompilerFlag("-Wl,-z,noexecstack" false false _LD)
-        # CFLAGS & CXXFLAGS
-        EnableCompilerFlag("-Qunused-arguments" _C _CXX false)
-        EnableCompilerFlag("-Wa,--noexecstack" _C _CXX false)
-        # NOTE: Using 3 nested ifs because the variables are sometimes
-        # empty if the condition is false, and sometimes equal to false.
-        # This implicitly converts them to truthy values. There may be
-        # a better way to do this, but this reliably works.
-        if (${LD_FLAG_WL_Z_NOEXECSTACK})
-            if (${C_FLAG_WA_NOEXECSTACK})
-                if (${CXX_FLAG_WA_NOEXECSTACK})
-                    # We've succeeded in marking the stack as non-executable
-                    set(ZSTD_HAS_NOEXECSTACK true)
-                endif()
-            endif()
-        endif()
     elseif (MSVC) # Add specific compilation flags for Windows Visual
 
         set(ACTIVATE_MULTITHREADED_COMPILATION "ON" CACHE BOOL "activate multi-threaded compilation (/MP flag)")
         if (CMAKE_GENERATOR MATCHES "Visual Studio" AND ACTIVATE_MULTITHREADED_COMPILATION)
-            EnableCompilerFlag("/MP" _C _CXX false)
+            EnableCompilerFlag("/MP" true true)
         endif ()
-
+        
         # UNICODE SUPPORT
-        EnableCompilerFlag("/D_UNICODE" _C _CXX false)
-        EnableCompilerFlag("/DUNICODE" _C _CXX false)
+        EnableCompilerFlag("/D_UNICODE" true true)
+        EnableCompilerFlag("/DUNICODE" true true)
         # Enable asserts in Debug mode
         if (CMAKE_BUILD_TYPE MATCHES "Debug")
-            EnableCompilerFlag("/DDEBUGLEVEL=1" _C _CXX false)
+            EnableCompilerFlag("/DDEBUGLEVEL=1" true true)
         endif ()
     endif ()
 

build/cmake/CMakeModules/JoinPaths.cmake

@@ -1,23 +0,0 @@
-# This module provides function for joining paths
-# known from most languages
-#
-# SPDX-License-Identifier: (MIT OR CC0-1.0)
-# Copyright 2020 Jan Tojnar
-# https://github.com/jtojnar/cmake-snips
-#
-# Modelled after Python’s os.path.join
-# https://docs.python.org/3.7/library/os.path.html#os.path.join
-# Windows not supported
-function(join_paths joined_path first_path_segment)
-    set(temp_path "${first_path_segment}")
-    foreach(current_segment IN LISTS ARGN)
-        if(NOT ("${current_segment}" STREQUAL ""))
-            if(IS_ABSOLUTE "${current_segment}")
-                set(temp_path "${current_segment}")
-            else()
-                set(temp_path "${temp_path}/${current_segment}")
-            endif()
-        endif()
-    endforeach()
-    set(${joined_path} "${temp_path}" PARENT_SCOPE)
-endfunction()

build/cmake/CMakeModules/ZstdBuild.cmake

@@ -1,42 +0,0 @@
-# ################################################################
-# ZSTD Build Targets Configuration
-# ################################################################
-
-# Always build the library first (this defines ZSTD_BUILD_STATIC/SHARED options)
-add_subdirectory(lib)
-
-# Validate build configuration after lib options are defined
-if(ZSTD_BUILD_PROGRAMS)
-    if(NOT ZSTD_BUILD_STATIC AND NOT ZSTD_PROGRAMS_LINK_SHARED)
-        message(SEND_ERROR "Static library required to build zstd CLI programs")
-    elseif(NOT ZSTD_BUILD_SHARED AND ZSTD_PROGRAMS_LINK_SHARED)
-        message(SEND_ERROR "Shared library required to build zstd CLI programs")
-    endif()
-endif()
-
-if(ZSTD_BUILD_TESTS AND NOT ZSTD_BUILD_STATIC)
-    message(SEND_ERROR "Static library required to build test suite")
-endif()
-
-# Add programs if requested
-if(ZSTD_BUILD_PROGRAMS)
-    add_subdirectory(programs)
-endif()
-
-# Add tests if requested
-if(ZSTD_BUILD_TESTS)
-    enable_testing()
-    add_subdirectory(tests)
-endif()
-
-# Add contrib utilities if requested
-if(ZSTD_BUILD_CONTRIB)
-    add_subdirectory(contrib)
-endif()
-
-# Clean-all target for thorough cleanup
-add_custom_target(clean-all
-    COMMAND ${CMAKE_BUILD_TOOL} clean
-    COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_BINARY_DIR}/
-    COMMENT "Performing complete clean including build directory"
-)

build/cmake/CMakeModules/ZstdDependencies.cmake

@@ -1,30 +0,0 @@
-# ################################################################
-# ZSTD Dependencies Configuration
-# ################################################################
-
-# Function to handle HP-UX thread configuration
-function(setup_hpux_threads)
-    find_package(Threads)
-    if(NOT Threads_FOUND)
-        set(CMAKE_USE_PTHREADS_INIT 1 PARENT_SCOPE)
-        set(CMAKE_THREAD_LIBS_INIT -lpthread PARENT_SCOPE)
-        set(CMAKE_HAVE_THREADS_LIBRARY 1 PARENT_SCOPE)
-        set(Threads_FOUND TRUE PARENT_SCOPE)
-    endif()
-endfunction()
-
-# Configure threading support
-if(ZSTD_MULTITHREAD_SUPPORT AND UNIX)
-    if(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
-        setup_hpux_threads()
-    else()
-        set(THREADS_PREFER_PTHREAD_FLAG ON)
-        find_package(Threads REQUIRED)
-    endif()
-    
-    if(CMAKE_USE_PTHREADS_INIT)
-        set(THREADS_LIBS "${CMAKE_THREAD_LIBS_INIT}")
-    else()
-        message(SEND_ERROR "ZSTD currently does not support thread libraries other than pthreads")
-    endif()
-endif()

build/cmake/CMakeModules/ZstdOptions.cmake

@@ -1,68 +0,0 @@
-# ################################################################
-# ZSTD Build Options Configuration
-# ################################################################
-
-# Legacy support configuration (disabled by default)
-option(ZSTD_LEGACY_SUPPORT "Enable legacy format support" OFF)
-
-if(ZSTD_LEGACY_SUPPORT)
-    message(STATUS "ZSTD_LEGACY_SUPPORT enabled")
-    set(ZSTD_LEGACY_LEVEL 5 CACHE STRING "Legacy support level")
-    add_definitions(-DZSTD_LEGACY_SUPPORT=${ZSTD_LEGACY_LEVEL})
-else()
-    message(STATUS "ZSTD_LEGACY_SUPPORT disabled")
-    add_definitions(-DZSTD_LEGACY_SUPPORT=0)
-endif()
-
-# Platform-specific options
-if(APPLE)
-    option(ZSTD_FRAMEWORK "Build as Apple Framework" OFF)
-endif()
-
-# Android-specific configuration
-if(ANDROID)
-    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT OFF)
-    # Handle old Android API levels
-    if((NOT ANDROID_PLATFORM_LEVEL) OR (ANDROID_PLATFORM_LEVEL VERSION_LESS 24))
-        message(STATUS "Configuring for old Android API - disabling fseeko/ftello")
-        add_compile_definitions(LIBC_NO_FSEEKO)
-    endif()
-else()
-    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT ON)
-endif()
-
-# Multi-threading support
-option(ZSTD_MULTITHREAD_SUPPORT "Enable multi-threading support" ${ZSTD_MULTITHREAD_SUPPORT_DEFAULT})
-
-if(ZSTD_MULTITHREAD_SUPPORT)
-    message(STATUS "Multi-threading support enabled")
-else()
-    message(STATUS "Multi-threading support disabled")
-endif()
-
-# Build component options
-option(ZSTD_BUILD_PROGRAMS "Build command-line programs" ON)
-option(ZSTD_BUILD_CONTRIB "Build contrib utilities" OFF)
-option(ZSTD_PROGRAMS_LINK_SHARED "Link programs against shared library" OFF)
-
-# Test configuration
-if(BUILD_TESTING)
-    set(ZSTD_BUILD_TESTS_default ON)
-else()
-    set(ZSTD_BUILD_TESTS_default OFF)
-endif()
-option(ZSTD_BUILD_TESTS "Build test suite" ${ZSTD_BUILD_TESTS_default})
-
-# MSVC-specific options
-if(MSVC)
-    option(ZSTD_USE_STATIC_RUNTIME "Link to static runtime libraries" OFF)
-endif()
-
-# C++ support (needed for tests)
-set(ZSTD_ENABLE_CXX ${ZSTD_BUILD_TESTS})
-if(ZSTD_ENABLE_CXX)
-    enable_language(CXX)
-endif()
-
-# Set global definitions
-add_definitions(-DXXH_NAMESPACE=ZSTD_)

build/cmake/CMakeModules/ZstdPackage.cmake

@@ -1,45 +0,0 @@
-# ################################################################
-# ZSTD Package Configuration
-# ################################################################
-
-include(CMakePackageConfigHelpers)
-
-# Generate version file
-write_basic_package_version_file(
-    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
-    VERSION ${zstd_VERSION}
-    COMPATIBILITY SameMajorVersion
-)
-
-# Configure package for installation
-set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/zstd)
-
-foreach(target_suffix IN ITEMS "_shared" "_static" "")
-    if(TARGET "libzstd${target_suffix}")
-        # Export targets for build directory
-        export(EXPORT "zstdExports${target_suffix}"
-                FILE "${CMAKE_CURRENT_BINARY_DIR}/zstdTargets${target_suffix}.cmake"
-                NAMESPACE zstd::
-        )
-        # Install exported targets
-        install(EXPORT "zstdExports${target_suffix}"
-                FILE "zstdTargets${target_suffix}.cmake"
-                NAMESPACE zstd::
-                DESTINATION ${ConfigPackageLocation}
-        )
-    endif()
-endforeach()
-
-# Configure and install package config file
-configure_package_config_file(
-    zstdConfig.cmake.in
-    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfig.cmake"
-    INSTALL_DESTINATION ${ConfigPackageLocation}
-)
-
-# Install config files
-install(FILES
-    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfig.cmake"
-    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
-    DESTINATION ${ConfigPackageLocation}
-)

build/cmake/CMakeModules/ZstdVersion.cmake

@@ -1,31 +0,0 @@
-# ################################################################
-# ZSTD Version Configuration
-# ################################################################
-
-# Setup CMake policy version
-set(ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION "3")
-set(ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION "13")
-
-# Determine appropriate policy version
-if("${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}" EQUAL "${CMAKE_MAJOR_VERSION}" AND
-   "${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}" GREATER "${CMAKE_MINOR_VERSION}")
-    set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
-else()
-    set(ZSTD_CMAKE_POLICY_VERSION "${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}.${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}.0")
-endif()
-
-cmake_policy(VERSION ${ZSTD_CMAKE_POLICY_VERSION})
-
-# Parse version from header file
-include(GetZstdLibraryVersion)
-GetZstdLibraryVersion(${LIBRARY_DIR}/zstd.h zstd_VERSION_MAJOR zstd_VERSION_MINOR zstd_VERSION_PATCH)
-
-# Set version variables
-set(ZSTD_SHORT_VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}")
-set(ZSTD_FULL_VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}")
-
-# Project metadata
-set(zstd_HOMEPAGE_URL "https://facebook.github.io/zstd")
-set(zstd_DESCRIPTION "Zstandard is a real-time compression algorithm, providing high compression ratios.")
-
-message(STATUS "ZSTD VERSION: ${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}")

build/cmake/README.md

@@ -1,22 +1,13 @@
 # Cmake contributions
 
 Contributions to the cmake build configurations are welcome. Please
-use case sensitivity that matches modern (i.e. cmake version 2.6 and above)
+use case sensitivity that matches modern (ie. cmake version 2.6 and above)
 conventions of using lower-case for commands, and upper-case for
 variables.
 
 ## How to build
 
-You can configure the project from the repository root thanks to the forwarding
-`CMakeLists.txt`:
-```sh
-cmake -S . -B build-cmake
-cmake --build build-cmake
-```
-The historical workflow that starts configuration from `build/cmake` continues
-to work as described below.
-
-As cmake doesn't support command like `cmake clean`, it's recommended to perform an "out of source build".
+As cmake doesn't support command like `cmake clean`, it's recommended to perform a "out of source build".
 To do this, you can create a new directory and build in it:
 ```sh
 cd build/cmake
@@ -46,52 +37,10 @@ cmake -LH ..
 Bool options can be set to `ON/OFF` with `-D[option]=[ON/OFF]`. You can configure cmake options like this:
 ```sh
 cd build/cmake/builddir
-cmake -DZSTD_BUILD_TESTS=ON -DZSTD_LEGACY_SUPPORT=OFF ..
+cmake -DZSTD_BUILD_TESTS=ON -DZSTD_LEGACY_SUPPORT=ON ..
 make
 ```
 
-**Apple Frameworks**
-It's generally recommended to have CMake with versions higher than 3.14 for [iOS-derived platforms](https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#id27).
-```sh
-cmake -S. -B build-cmake -DZSTD_FRAMEWORK=ON -DCMAKE_SYSTEM_NAME=iOS
-```
-Or you can utilize [iOS-CMake](https://github.com/leetal/ios-cmake) toolchain for CMake versions lower than 3.14
-```sh
-cmake -B build -G Xcode -DCMAKE_TOOLCHAIN_FILE=<Path To ios.toolchain.cmake> -DPLATFORM=OS64 -DZSTD_FRAMEWORK=ON
-```
-
-### how to use it with CMake FetchContent
-
-For all options available, you can see it on <https://github.com/facebook/zstd/blob/dev/build/cmake/lib/CMakeLists.txt>
-```cmake
-include(FetchContent)
-
-set(ZSTD_BUILD_STATIC ON)
-set(ZSTD_BUILD_SHARED OFF)
-
-FetchContent_Declare(
-    zstd
-    URL "https://github.com/facebook/zstd/releases/download/v1.5.5/zstd-1.5.5.tar.gz"
-    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-    SOURCE_SUBDIR build/cmake
-)
-
-FetchContent_MakeAvailable(zstd)
-
-target_link_libraries(
-    ${PROJECT_NAME}
-    PRIVATE
-    libzstd_static
-)
-
-# On windows and macos this is needed
-target_include_directories(
-    ${PROJECT_NAME}
-    PRIVATE
-    ${zstd_SOURCE_DIR}/lib
-)
-```
-
 ### referring
 [Looking for a 'cmake clean' command to clear up CMake output](https://stackoverflow.com/questions/9680420/looking-for-a-cmake-clean-command-to-clear-up-cmake-output)
 

build/cmake/contrib/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

build/cmake/contrib/gen_html/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

build/cmake/contrib/pzstd/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2016-present, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -18,7 +18,6 @@ set(PZSTD_DIR ${ZSTD_SOURCE_DIR}/contrib/pzstd)
 include_directories(${PROGRAMS_DIR} ${LIBRARY_DIR} ${LIBRARY_DIR}/common ${PZSTD_DIR})
 
 add_executable(pzstd ${PROGRAMS_DIR}/util.c ${PZSTD_DIR}/main.cpp ${PZSTD_DIR}/Options.cpp ${PZSTD_DIR}/Pzstd.cpp ${PZSTD_DIR}/SkippableFrame.cpp)
-target_compile_features(pzstd PRIVATE cxx_std_11)
 set_property(TARGET pzstd APPEND PROPERTY COMPILE_DEFINITIONS "NDEBUG")
 set_property(TARGET pzstd APPEND PROPERTY COMPILE_OPTIONS "-Wno-shadow")
 

build/cmake/lib/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -7,76 +7,50 @@
 # in the COPYING file in the root directory of this source tree).
 # ################################################################
 
-project(libzstd C) # ASM language is conditionally enabled where supported
+project(libzstd C ASM)
 
 set(CMAKE_INCLUDE_CURRENT_DIR TRUE)
 option(ZSTD_BUILD_STATIC "BUILD STATIC LIBRARIES" ON)
 option(ZSTD_BUILD_SHARED "BUILD SHARED LIBRARIES" ON)
-option(ZSTD_BUILD_COMPRESSION "BUILD COMPRESSION MODULE" ON)
-option(ZSTD_BUILD_DECOMPRESSION "BUILD DECOMPRESSION MODULE" ON)
-option(ZSTD_BUILD_DICTBUILDER "BUILD DICTBUILDER MODULE" ON)
-option(ZSTD_BUILD_DEPRECATED "BUILD DEPRECATED MODULE" OFF)
-
-set(ZSTDLIB_VISIBLE "" CACHE STRING "Visibility for ZSTDLIB API")
-set(ZSTDERRORLIB_VISIBLE "" CACHE STRING "Visibility for ZSTDERRORLIB_VISIBLE API")
-set(ZDICTLIB_VISIBLE "" CACHE STRING "Visibility for ZDICTLIB_VISIBLE API")
-set(ZSTDLIB_STATIC_API "" CACHE STRING "Visibility for ZSTDLIB_STATIC_API API")
-set(ZDICTLIB_STATIC_API "" CACHE STRING "Visibility for ZDICTLIB_STATIC_API API")
-
-set_property(CACHE ZSTDLIB_VISIBLE PROPERTY STRINGS "" "hidden" "default" "protected" "internal")
-set_property(CACHE ZSTDERRORLIB_VISIBLE PROPERTY STRINGS "" "hidden" "default" "protected" "internal")
-set_property(CACHE ZDICTLIB_VISIBLE PROPERTY STRINGS "" "hidden" "default" "protected" "internal")
-set_property(CACHE ZSTDLIB_STATIC_API PROPERTY STRINGS "" "hidden" "default" "protected" "internal")
-set_property(CACHE ZDICTLIB_STATIC_API PROPERTY STRINGS "" "hidden" "default" "protected" "internal")
 
 if(NOT ZSTD_BUILD_SHARED AND NOT ZSTD_BUILD_STATIC)
     message(SEND_ERROR "You need to build at least one flavor of libzstd")
 endif()
 
+# Define library directory, where sources and header files are located
+include_directories(${LIBRARY_DIR} ${LIBRARY_DIR}/common)
+
 file(GLOB CommonSources ${LIBRARY_DIR}/common/*.c)
 file(GLOB CompressSources ${LIBRARY_DIR}/compress/*.c)
-file(GLOB DecompressSources ${LIBRARY_DIR}/decompress/*.c)
 if (MSVC)
+    file(GLOB DecompressSources ${LIBRARY_DIR}/decompress/*.c)
     add_compile_options(-DZSTD_DISABLE_ASM)
 else ()
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|AMD64.*|x86_64.*|X86_64.*" AND ${ZSTD_HAS_NOEXECSTACK})
-        enable_language(ASM)
-        set(DecompressSources ${DecompressSources} ${LIBRARY_DIR}/decompress/huf_decompress_amd64.S)
-    else()
-        add_compile_options(-DZSTD_DISABLE_ASM)
-    endif()
+    file(GLOB DecompressSources ${LIBRARY_DIR}/decompress/*.c ${LIBRARY_DIR}/decompress/*.S)
 endif ()
 file(GLOB DictBuilderSources ${LIBRARY_DIR}/dictBuilder/*.c)
-file(GLOB DeprecatedSources ${LIBRARY_DIR}/deprecated/*.c)
 
-file(GLOB PublicHeaders ${LIBRARY_DIR}/*.h)
+set(Sources
+        ${CommonSources}
+        ${CompressSources}
+        ${DecompressSources}
+        ${DictBuilderSources})
+
 file(GLOB CommonHeaders ${LIBRARY_DIR}/common/*.h)
 file(GLOB CompressHeaders ${LIBRARY_DIR}/compress/*.h)
 file(GLOB DecompressHeaders ${LIBRARY_DIR}/decompress/*.h)
 file(GLOB DictBuilderHeaders ${LIBRARY_DIR}/dictBuilder/*.h)
-file(GLOB DeprecatedHeaders ${LIBRARY_DIR}/deprecated/*.h)
 
-set(Sources ${CommonSources})
-set(Headers ${PublicHeaders} ${CommonHeaders})
-if (ZSTD_BUILD_COMPRESSION)
-    set(Sources ${Sources} ${CompressSources})
-    set(Headers ${Headers} ${CompressHeaders})
-endif()
-if (ZSTD_BUILD_DECOMPRESSION)
-    set(Sources ${Sources} ${DecompressSources})
-    set(Headers ${Headers} ${DecompressHeaders})
-endif()
-if (ZSTD_BUILD_DICTBUILDER)
-    set(Sources ${Sources} ${DictBuilderSources})
-    set(Headers ${Headers} ${DictBuilderHeaders})
-endif()
-if (ZSTD_BUILD_DEPRECATED)
-    set(Sources ${Sources} ${DeprecatedSources})
-    set(Headers ${Headers} ${DeprecatedHeaders})
-endif()
+set(Headers
+        ${LIBRARY_DIR}/zstd.h
+        ${CommonHeaders}
+        ${CompressHeaders}
+        ${DecompressHeaders}
+        ${DictBuilderHeaders})
 
 if (ZSTD_LEGACY_SUPPORT)
     set(LIBRARY_LEGACY_DIR ${LIBRARY_DIR}/legacy)
+    include_directories(${LIBRARY_LEGACY_DIR})
 
     set(Sources ${Sources}
             ${LIBRARY_LEGACY_DIR}/zstd_v01.c
@@ -98,84 +72,32 @@ if (ZSTD_LEGACY_SUPPORT)
             ${LIBRARY_LEGACY_DIR}/zstd_v07.h)
 endif ()
 
-if (MSVC AND NOT (CMAKE_CXX_COMPILER_ID STREQUAL "Clang"))
+if (MSVC)
     set(MSVC_RESOURCE_DIR ${ZSTD_SOURCE_DIR}/build/VS2010/libzstd-dll)
     set(PlatformDependResources ${MSVC_RESOURCE_DIR}/libzstd-dll.rc)
-else()
-    set(PlatformDependResources)
 endif ()
 
-# Explicitly set the language to C for all files, including ASM files.
-# Our assembly expects to be compiled by a C compiler, and is only enabled for
-# __GNUC__ compatible compilers. Otherwise all the ASM code is disabled by
-# macros.
-if(NOT CMAKE_ASM_COMPILER STREQUAL CMAKE_C_COMPILER)
-    set_source_files_properties(${Sources} PROPERTIES LANGUAGE C)
-endif()
-
-macro (add_definition target var)
-    if (NOT ("${${var}}" STREQUAL ""))
-        target_compile_definitions(${target} PUBLIC "${var}=__attribute__((visibility(\"${${var}}\")))")
-    endif ()
-endmacro ()
-
-# Define directories containing the library's public headers
-set(PUBLIC_INCLUDE_DIRS ${LIBRARY_DIR})
-set(CMAKE_RC_FLAGS "${CMAKE_RC_FLAGS} /I \"${LIBRARY_DIR}\"")
 # Split project to static and shared libraries build
+set(library_targets)
 if (ZSTD_BUILD_SHARED)
     add_library(libzstd_shared SHARED ${Sources} ${Headers} ${PlatformDependResources})
-    target_include_directories(libzstd_shared INTERFACE $<BUILD_INTERFACE:${PUBLIC_INCLUDE_DIRS}>)
+    list(APPEND library_targets libzstd_shared)
     if (ZSTD_MULTITHREAD_SUPPORT)
-        target_compile_definitions(libzstd_shared PUBLIC ZSTD_MULTITHREAD)
+        set_property(TARGET libzstd_shared APPEND PROPERTY COMPILE_DEFINITIONS "ZSTD_MULTITHREAD")
         if (UNIX)
             target_link_libraries(libzstd_shared ${THREADS_LIBS})
         endif ()
-    endif ()
-    add_definition(libzstd_shared ZSTDLIB_VISIBLE)
-    add_definition(libzstd_shared ZSTDERRORLIB_VISIBLE)
-    add_definition(libzstd_shared ZDICTLIB_VISIBLE)
+    endif()
 endif ()
 if (ZSTD_BUILD_STATIC)
     add_library(libzstd_static STATIC ${Sources} ${Headers})
-    target_include_directories(libzstd_static INTERFACE $<BUILD_INTERFACE:${PUBLIC_INCLUDE_DIRS}>)
+    list(APPEND library_targets libzstd_static)
     if (ZSTD_MULTITHREAD_SUPPORT)
-        target_compile_definitions(libzstd_static PUBLIC ZSTD_MULTITHREAD)
+        set_property(TARGET libzstd_static APPEND PROPERTY COMPILE_DEFINITIONS "ZSTD_MULTITHREAD")
         if (UNIX)
             target_link_libraries(libzstd_static ${THREADS_LIBS})
         endif ()
     endif ()
-    add_definition(libzstd_static ZSTDLIB_VISIBLE)
-    add_definition(libzstd_static ZSTDERRORLIB_VISIBLE)
-    add_definition(libzstd_static ZDICTLIB_VISIBLE)
-    add_definition(libzstd_static ZSTDLIB_STATIC_API)
-    add_definition(libzstd_static ZDICTLIB_STATIC_API)
-endif ()
-if (ZSTD_BUILD_SHARED AND NOT ZSTD_BUILD_STATIC)
-    if (NOT BUILD_SHARED_LIBS)
-        message(WARNING "BUILD_SHARED_LIBS is OFF, but ZSTD_BUILD_SHARED is ON and ZSTD_BUILD_STATIC is OFF, which takes precedence, so libzstd is a shared library")
-    endif ()
-    add_library(libzstd INTERFACE)
-    target_link_libraries(libzstd INTERFACE libzstd_shared)
-endif ()
-if (ZSTD_BUILD_STATIC AND NOT ZSTD_BUILD_SHARED)
-    if (BUILD_SHARED_LIBS)
-        message(WARNING "BUILD_SHARED_LIBS is ON, but ZSTD_BUILD_SHARED is OFF and ZSTD_BUILD_STATIC is ON, which takes precedence, is set so libzstd is a static library")
-    endif ()
-    add_library(libzstd INTERFACE)
-    target_link_libraries(libzstd INTERFACE libzstd_static)
-endif ()
-if (ZSTD_BUILD_SHARED AND ZSTD_BUILD_STATIC)
-    # If both ZSTD_BUILD_SHARED and ZSTD_BUILD_STATIC are set, which is the
-    # default, fallback to using BUILD_SHARED_LIBS to determine whether to
-    # set libzstd to static or shared.
-    if (BUILD_SHARED_LIBS)
-        add_library(libzstd INTERFACE)
-        target_link_libraries(libzstd INTERFACE libzstd_shared)
-    else ()
-        add_library(libzstd INTERFACE)
-        target_link_libraries(libzstd INTERFACE libzstd_static)
-    endif ()
 endif ()
 
 # Add specific compile definitions for MSVC project
@@ -201,28 +123,8 @@ if (ZSTD_BUILD_SHARED)
             libzstd_shared
             PROPERTIES
             OUTPUT_NAME zstd
-            VERSION ${ZSTD_FULL_VERSION}
+            VERSION ${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}
             SOVERSION ${zstd_VERSION_MAJOR})
-
-    if (ZSTD_FRAMEWORK)
-        set_target_properties(
-                libzstd_shared
-                PROPERTIES
-                FRAMEWORK TRUE
-                FRAMEWORK_VERSION "${ZSTD_FULL_VERSION}"
-                PRODUCT_BUNDLE_IDENTIFIER "github.com/facebook/zstd"
-                XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
-                PUBLIC_HEADER "${PublicHeaders}"
-                OUTPUT_NAME "zstd"
-                XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY ""
-                XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
-                XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO"
-                MACOSX_FRAMEWORK_IDENTIFIER "github.com/facebook/zstd"
-                MACOSX_FRAMEWORK_BUNDLE_VERSION "${ZSTD_FULL_VERSION}"
-                MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${ZSTD_SHORT_VERSION}"
-                MACOSX_RPATH TRUE
-                RESOURCE ${PublicHeaders})
-    endif ()
 endif ()
 
 if (ZSTD_BUILD_STATIC)
@@ -231,57 +133,48 @@ if (ZSTD_BUILD_STATIC)
             PROPERTIES
             POSITION_INDEPENDENT_CODE On
             OUTPUT_NAME ${STATIC_LIBRARY_BASE_NAME})
-
-    if (ZSTD_FRAMEWORK)
-        set_target_properties(
-                libzstd_static
-                PROPERTIES
-                FRAMEWORK TRUE
-                FRAMEWORK_VERSION "${ZSTD_FULL_VERSION}"
-                PRODUCT_BUNDLE_IDENTIFIER "github.com/facebook/zstd/${STATIC_LIBRARY_BASE_NAME}"
-                XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
-                PUBLIC_HEADER "${PublicHeaders}"
-                OUTPUT_NAME "${STATIC_LIBRARY_BASE_NAME}"
-                XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY ""
-                XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
-                XCODE_ATTRIBUTE_CODE_SIGNING_REQUIRED "NO"
-                MACOSX_FRAMEWORK_IDENTIFIER "github.com/facebook/zstd/${STATIC_LIBRARY_BASE_NAME}"
-                MACOSX_FRAMEWORK_BUNDLE_VERSION "${ZSTD_FULL_VERSION}"
-                MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${ZSTD_SHORT_VERSION}"
-                MACOSX_RPATH TRUE
-                RESOURCE ${PublicHeaders})
-    endif ()
 endif ()
 
-# pkg-config
-include(JoinPaths) # can be replaced by cmake_path(APPEND) in CMake 3.20
-set(PREFIX "${CMAKE_INSTALL_PREFIX}")
-set(EXEC_PREFIX "\${prefix}")
-join_paths(LIBDIR "\${exec_prefix}" "${CMAKE_INSTALL_LIBDIR}")
-join_paths(INCLUDEDIR "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
-set(LIBS_PRIVATE "${THREADS_LIBS}")
-set(VERSION "${zstd_VERSION}")
+if (UNIX OR MINGW)
+    # pkg-config
+    set(PREFIX "${CMAKE_INSTALL_PREFIX}")
+    set(EXEC_PREFIX "\${prefix}")
+    set(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}")
+    set(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+    set(VERSION "${zstd_VERSION}")
 
-configure_file("${LIBRARY_DIR}/libzstd.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libzstd.pc" @ONLY)
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libzstd.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    string(LENGTH "${PREFIX}" PREFIX_LENGTH)
+    string(SUBSTRING "${LIBDIR}" 0 ${PREFIX_LENGTH} LIBDIR_PREFIX)
+    string(SUBSTRING "${LIBDIR}" ${PREFIX_LENGTH} -1 LIBDIR_SUFFIX)
+    string(SUBSTRING "${INCLUDEDIR}" 0 ${PREFIX_LENGTH} INCLUDEDIR_PREFIX)
+    string(SUBSTRING "${INCLUDEDIR}" ${PREFIX_LENGTH} -1 INCLUDEDIR_SUFFIX)
+
+    if ("${INCLUDEDIR_PREFIX}" STREQUAL "${PREFIX}")
+        set(INCLUDEDIR "\${prefix}${INCLUDEDIR_SUFFIX}")
+    endif()
+    if ("${LIBDIR_PREFIX}" STREQUAL "${PREFIX}")
+        set(LIBDIR "\${exec_prefix}${LIBDIR_SUFFIX}")
+    endif()
+
+    configure_file("${LIBRARY_DIR}/libzstd.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libzstd.pc" @ONLY)
+    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libzstd.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+endif ()
 
 # install target
-install(FILES ${PublicHeaders} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+install(FILES
+    "${LIBRARY_DIR}/zstd.h"
+    "${LIBRARY_DIR}/zdict.h"
+    "${LIBRARY_DIR}/zstd_errors.h"
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
 
-foreach(target_suffix IN ITEMS "_shared" "_static" "")
-    if(TARGET "libzstd${target_suffix}")
-        install(TARGETS "libzstd${target_suffix}"
-            EXPORT "zstdExports${target_suffix}"
-            INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
-            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
-            BUNDLE DESTINATION "${CMAKE_INSTALL_BINDIR}"
-            FRAMEWORK DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT runtime OPTIONAL
-            PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
-            )
-    endif()
-endforeach()
+install(TARGETS ${library_targets}
+    EXPORT zstdExports
+    INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    BUNDLE DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    )
 
 # uninstall target
 if (NOT TARGET uninstall)

build/cmake/programs/CMakeLists.txt

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -32,12 +32,7 @@ if (MSVC)
     set(PlatformDependResources ${MSVC_RESOURCE_DIR}/zstd.rc)
 endif ()
 
-file(GLOB ZSTD_PROGRAM_SRCS "${PROGRAMS_DIR}/*.c")
-if (MSVC AND ZSTD_PROGRAMS_LINK_SHARED)
-    list(APPEND ZSTD_PROGRAM_SRCS ${LIBRARY_DIR}/common/pool.c ${LIBRARY_DIR}/common/threading.c)
-endif ()
-
-add_executable(zstd ${ZSTD_PROGRAM_SRCS})
+add_executable(zstd ${PROGRAMS_DIR}/zstdcli.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${PROGRAMS_DIR}/fileio.c ${PROGRAMS_DIR}/benchfn.c ${PROGRAMS_DIR}/benchzstd.c ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/dibio.c ${PROGRAMS_DIR}/zstdcli_trace.c ${PlatformDependResources})
 target_link_libraries(zstd ${PROGRAMS_ZSTD_LINK_TARGET})
 if (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
     target_link_libraries(zstd rt)
@@ -80,9 +75,7 @@ if (UNIX)
         ${CMAKE_CURRENT_BINARY_DIR}/zstdless.1
         DESTINATION "${MAN_INSTALL_DIR}")
 
-    add_executable(zstd-frugal ${PROGRAMS_DIR}/zstdcli.c
-        ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c
-        ${PROGRAMS_DIR}/fileio.c ${PROGRAMS_DIR}/fileio_asyncio.c)
+    add_executable(zstd-frugal ${PROGRAMS_DIR}/zstdcli.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${PROGRAMS_DIR}/fileio.c)
     target_link_libraries(zstd-frugal ${PROGRAMS_ZSTD_LINK_TARGET})
     set_property(TARGET zstd-frugal APPEND PROPERTY COMPILE_DEFINITIONS "ZSTD_NOBENCH;ZSTD_NODICT;ZSTD_NOTRACE")
 endif ()

build/cmake/tests/CMakeLists.txt

@@ -1,6 +1,6 @@
 # ################################################################
 # zstd - Makefile
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (C) Yann Collet 2014-present
 # All rights reserved.
 #
 # BSD license
@@ -27,7 +27,7 @@
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 # You can contact the author at :
-#  - zstd homepage : https://facebook.github.io/zstd/
+#  - zstd homepage : http://www.zstd.net/
 # ################################################################
 
 project(tests)
@@ -50,30 +50,26 @@ set(PROGRAMS_DIR ${ZSTD_SOURCE_DIR}/programs)
 set(TESTS_DIR ${ZSTD_SOURCE_DIR}/tests)
 include_directories(${TESTS_DIR} ${PROGRAMS_DIR} ${LIBRARY_DIR} ${LIBRARY_DIR}/common ${LIBRARY_DIR}/compress ${LIBRARY_DIR}/dictBuilder)
 
-add_executable(datagen ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/lorem.c ${TESTS_DIR}/loremOut.c ${TESTS_DIR}/datagencli.c)
+add_executable(datagen ${PROGRAMS_DIR}/datagen.c ${TESTS_DIR}/datagencli.c)
 target_link_libraries(datagen libzstd_static)
 
 #
 # fullbench
 #
-add_executable(fullbench ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/lorem.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${PROGRAMS_DIR}/benchfn.c ${PROGRAMS_DIR}/benchzstd.c ${TESTS_DIR}/fullbench.c)
-if (NOT MSVC)
-    target_compile_options(fullbench PRIVATE "-Wno-deprecated-declarations")
-endif()
+add_executable(fullbench ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${PROGRAMS_DIR}/benchfn.c ${PROGRAMS_DIR}/benchzstd.c ${TESTS_DIR}/fullbench.c)
+set_property(TARGET fullbench APPEND PROPERTY COMPILE_OPTIONS "-Wno-deprecated-declarations")
 target_link_libraries(fullbench libzstd_static)
-add_test(NAME fullbench COMMAND "$<TARGET_FILE:fullbench>" ${ZSTD_FULLBENCH_FLAGS})
+add_test(NAME fullbench COMMAND fullbench ${ZSTD_FULLBENCH_FLAGS})
 
 #
 # fuzzer
 #
 add_executable(fuzzer ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${TESTS_DIR}/fuzzer.c)
-if (NOT MSVC)
-    target_compile_options(fuzzer PRIVATE "-Wno-deprecated-declarations")
-endif()
+set_property(TARGET fuzzer APPEND PROPERTY COMPILE_OPTIONS "-Wno-deprecated-declarations")
 target_link_libraries(fuzzer libzstd_static)
 AddTestFlagsOption(ZSTD_FUZZER_FLAGS "$ENV{FUZZERTEST} $ENV{FUZZER_FLAGS}"
     "Semicolon-separated list of flags to pass to the fuzzer test (see `fuzzer -h` for usage)")
-add_test(NAME fuzzer COMMAND "$<TARGET_FILE:fuzzer>" ${ZSTD_FUZZER_FLAGS})
+add_test(NAME fuzzer COMMAND fuzzer ${ZSTD_FUZZER_FLAGS})
 # Disable the timeout since the run time is too long for the default timeout of
 # 1500 seconds and varies considerably between low-end and high-end CPUs.
 # set_tests_properties(fuzzer PROPERTIES TIMEOUT 0)
@@ -81,14 +77,12 @@ add_test(NAME fuzzer COMMAND "$<TARGET_FILE:fuzzer>" ${ZSTD_FUZZER_FLAGS})
 #
 # zstreamtest
 #
-add_executable(zstreamtest ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${TESTS_DIR}/seqgen.c ${TESTS_DIR}/zstreamtest.c ${TESTS_DIR}/external_matchfinder.c)
-if (NOT MSVC)
-    target_compile_options(zstreamtest PRIVATE "-Wno-deprecated-declarations")
-endif()
+add_executable(zstreamtest ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${TESTS_DIR}/seqgen.c ${TESTS_DIR}/zstreamtest.c)
+set_property(TARGET zstreamtest APPEND PROPERTY COMPILE_OPTIONS "-Wno-deprecated-declarations")
 target_link_libraries(zstreamtest libzstd_static)
 AddTestFlagsOption(ZSTD_ZSTREAM_FLAGS "$ENV{ZSTREAM_TESTTIME} $ENV{FUZZER_FLAGS}"
     "Semicolon-separated list of flags to pass to the zstreamtest test (see `zstreamtest -h` for usage)")
-add_test(NAME zstreamtest COMMAND "$<TARGET_FILE:zstreamtest>" ${ZSTD_ZSTREAM_FLAGS})
+add_test(NAME zstreamtest COMMAND zstreamtest ${ZSTD_ZSTREAM_FLAGS})
 
 #
 # playTests.sh
@@ -96,21 +90,20 @@ add_test(NAME zstreamtest COMMAND "$<TARGET_FILE:zstreamtest>" ${ZSTD_ZSTREAM_FL
 AddTestFlagsOption(ZSTD_PLAYTESTS_FLAGS "$ENV{PLAYTESTS_FLAGS}"
     "Semicolon-separated list of flags to pass to the playTests.sh test")
 add_test(NAME playTests COMMAND sh -c "\"${TESTS_DIR}/playTests.sh\" ${ZSTD_PLAYTESTS_FLAGS}")
-find_program(UNAME uname) # Run script only in unix shell environments
-if (ZSTD_BUILD_PROGRAMS AND UNAME)
+if (ZSTD_BUILD_PROGRAMS)
     set_property(TEST playTests APPEND PROPERTY ENVIRONMENT
         "ZSTD_BIN=$<TARGET_FILE:zstd>"
         "DATAGEN_BIN=$<TARGET_FILE:datagen>"
         )
 else()
-    message(STATUS "Disabling playTests.sh test because requirements not met")
+    message(STATUS "Disabling playTests.sh test because ZSTD_BUILD_PROGRAMS is not enabled")
     set_tests_properties(playTests PROPERTIES DISABLED YES)
 endif()
 
 # Label the "Medium" set of tests (see TESTING.md)
 set_property(TEST fuzzer zstreamtest playTests APPEND PROPERTY LABELS Medium)
 
-add_executable(paramgrill ${PROGRAMS_DIR}/benchfn.c ${PROGRAMS_DIR}/benchzstd.c ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/lorem.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${TESTS_DIR}/paramgrill.c)
+add_executable(paramgrill ${PROGRAMS_DIR}/benchfn.c ${PROGRAMS_DIR}/benchzstd.c ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/util.c ${PROGRAMS_DIR}/timefn.c ${TESTS_DIR}/paramgrill.c)
 if (UNIX)
     target_link_libraries(paramgrill libzstd_static m) #m is math library
 else()

build/cmake/zstdConfig.cmake

@@ -0,0 +1 @@
+include("${CMAKE_CURRENT_LIST_DIR}/zstdTargets.cmake")

build/cmake/zstdConfig.cmake.in

@@ -1,13 +0,0 @@
-@PACKAGE_INIT@
-
-include(CMakeFindDependencyMacro)
-if(@ZSTD_MULTITHREAD_SUPPORT@ AND "@UNIX@")
-  find_dependency(Threads)
-endif()
-
-foreach(lib_suffix IN ITEMS "_shared" "_static")
-    include("${CMAKE_CURRENT_LIST_DIR}/zstdTargets${lib_suffix}.cmake" OPTIONAL)
-endforeach()
-include("${CMAKE_CURRENT_LIST_DIR}/zstdTargets.cmake")
-
-check_required_components("zstd")

build/meson/contrib/pzstd/meson.build

@@ -18,8 +18,7 @@ pzstd_sources = [join_paths(zstd_rootdir, 'programs/util.c'),
   join_paths(zstd_rootdir, 'contrib/pzstd/SkippableFrame.cpp')]
 pzstd = executable('pzstd',
   pzstd_sources,
-  cpp_args: pzstd_warning_flags,
+  cpp_args: [ '-DNDEBUG', '-Wno-shadow', '-Wno-deprecated-declarations' ],
   include_directories: pzstd_includes,
-  dependencies: [ libzstd_internal_dep, thread_dep ],
-  override_options: ['b_ndebug=true'],
+  dependencies: [ libzstd_dep, thread_dep ],
   install: true)

build/meson/lib/meson.build

@@ -30,7 +30,6 @@ libzstd_sources = [join_paths(zstd_rootdir, 'lib/common/entropy_common.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstd_compress_literals.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstd_compress_sequences.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstd_compress_superblock.c'),
-  join_paths(zstd_rootdir, 'lib/compress/zstd_preSplit.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstdmt_compress.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstd_fast.c'),
   join_paths(zstd_rootdir, 'lib/compress/zstd_double_fast.c'),
@@ -48,7 +47,7 @@ libzstd_sources = [join_paths(zstd_rootdir, 'lib/common/entropy_common.c'),
 
 # really we need anything that defines __GNUC__ as that is what ZSTD_ASM_SUPPORTED is gated on
 # but these are the two compilers that are supported in tree and actually handle this correctly
-# Otherwise, explicitly disable assembly.
+# Otherwise, explicitly disable assmebly.
 if [compiler_gcc, compiler_clang].contains(cc_id)
   libzstd_sources += join_paths(zstd_rootdir, 'lib/decompress/huf_decompress_amd64.S')
 else
@@ -84,8 +83,7 @@ libzstd_c_args = []
 if cc_id == compiler_msvc
   if default_library_type != 'static'
     libzstd_sources += [windows_mod.compile_resources(
-      join_paths(zstd_rootdir, 'build/VS2010/libzstd-dll/libzstd-dll.rc'),
-      include_directories: libzstd_includes)]
+      join_paths(zstd_rootdir, 'build/VS2010/libzstd-dll/libzstd-dll.rc'))]
     libzstd_c_args += ['-DZSTD_DLL_EXPORT=1',
       '-DZSTD_HEAPMODE=0',
       '-D_CONSOLE',
@@ -125,50 +123,14 @@ libzstd = library('zstd',
   version: zstd_libversion)
 
 libzstd_dep = declare_dependency(link_with: libzstd,
-  include_directories: join_paths(zstd_rootdir,'lib')) # Do not expose private headers
-
-if meson.version().version_compare('>=0.54.0')
-  meson.override_dependency('libzstd', libzstd_dep)
-endif
-
-# we link to both:
-# - the shared library (for public symbols)
-# - the static library (for private symbols)
-#
-# this is needed because internally private symbols are used all the time, and
-# -fvisibility=hidden means those cannot be found
-if get_option('default_library') == 'static'
-  libzstd_static = libzstd
-  libzstd_internal_dep = declare_dependency(link_with: libzstd,
-      include_directories: libzstd_includes)
-else
-  if get_option('default_library') == 'shared'
-    libzstd_static = static_library('zstd_objlib',
-      objects: libzstd.extract_all_objects(recursive: true),
-      build_by_default: false)
-  else
-    libzstd_static = libzstd.get_static_lib()
-  endif
-
-  if cc_id == compiler_msvc
-    # msvc does not actually support linking to both, but errors out with:
-    #   error LNK2005: ZSTD_<foo> already defined in zstd.lib(zstd-1.dll)
-    libzstd_internal_dep = declare_dependency(link_with: libzstd_static,
-      include_directories: libzstd_includes)
-  else
-    libzstd_internal_dep = declare_dependency(link_with: libzstd,
-      # the static library must be linked after the shared one
-      dependencies: declare_dependency(link_with: libzstd_static),
-      include_directories: libzstd_includes)
-  endif
-endif
+  include_directories: libzstd_includes)
 
 pkgconfig.generate(libzstd,
   name: 'libzstd',
   filebase: 'libzstd',
   description: 'fast lossless compression algorithm library',
   version: zstd_libversion,
-  url: 'https://facebook.github.io/zstd/')
+  url: 'http://www.zstd.net/')
 
 install_headers(join_paths(zstd_rootdir, 'lib/zstd.h'),
   join_paths(zstd_rootdir, 'lib/zdict.h'),

build/meson/meson.build

@@ -10,12 +10,9 @@
 
 project('zstd',
   ['c', 'cpp'],
-  license: 'BSD-3-Clause OR GPL-2.0-only',
+  license: ['BSD', 'GPLv2'],
   default_options : [
-    # There shouldn't be any need to force a C standard convention for zstd
-    # but in case one would want that anyway, this can be done here.
-    # 'c_std=gnu99',
-    # c++11 standard is useful for pzstd
+    'c_std=gnu99',
     'cpp_std=c++11',
     'buildtype=release',
     'warning_level=3',
@@ -23,10 +20,8 @@ project('zstd',
     # so this isn't safe
     #'werror=true'
   ],
-  version: run_command(
-    find_program('GetZstdLibraryVersion.py'), '../../lib/zstd.h',
-    check: true).stdout().strip(),
-  meson_version: '>=0.50.0')
+  version: 'DUMMY',
+  meson_version: '>=0.48.0')
 
 cc = meson.get_compiler('c')
 cxx = meson.get_compiler('cpp')
@@ -47,6 +42,16 @@ compiler_msvc = 'msvc'
 
 zstd_version = meson.project_version()
 
+zstd_h_file = join_paths(meson.current_source_dir(), '../../lib/zstd.h')
+GetZstdLibraryVersion_py = find_program('GetZstdLibraryVersion.py', native : true)
+r = run_command(GetZstdLibraryVersion_py, zstd_h_file)
+if r.returncode() == 0
+  zstd_version = r.stdout().strip()
+  message('Project version is now: @0@'.format(zstd_version))
+else
+  error('Cannot find project version in @0@'.format(zstd_h_file))
+endif
+
 zstd_libversion = zstd_version
 
 # =============================================================================
@@ -65,6 +70,7 @@ zstd_docdir = join_paths(zstd_datadir, 'doc', meson.project_name())
 
 # Built-in options
 use_debug = get_option('debug')
+buildtype = get_option('buildtype')
 default_library_type = get_option('default_library')
 
 # Custom options
@@ -86,14 +92,9 @@ feature_lz4 = get_option('lz4')
 # Dependencies
 # =============================================================================
 
-libm_dep = cc.find_library('m', required: false)
-if host_machine_os == os_windows
-  thread_dep = dependency('', required: false)
-  use_multi_thread = not feature_multi_thread.disabled()
-else
-  thread_dep = dependency('threads', required: feature_multi_thread)
-  use_multi_thread = thread_dep.found()
-endif
+libm_dep = cc.find_library('m', required: bin_tests)
+thread_dep = dependency('threads', required: feature_multi_thread)
+use_multi_thread = thread_dep.found()
 # Arguments in dependency should be equivalent to those passed to pkg-config
 zlib_dep = dependency('zlib', required: feature_zlib)
 use_zlib = zlib_dep.found()
@@ -108,23 +109,15 @@ use_lz4 = lz4_dep.found()
 
 add_project_arguments('-DXXH_NAMESPACE=ZSTD_', language: ['c'])
 
-pzstd_warning_flags = []
 if [compiler_gcc, compiler_clang].contains(cc_id)
   common_warning_flags = [ '-Wundef', '-Wshadow', '-Wcast-align', '-Wcast-qual' ]
-  pzstd_warning_flags = ['-Wno-shadow', '-Wno-deprecated-declarations']
   if cc_id == compiler_clang
     common_warning_flags += ['-Wconversion', '-Wno-sign-conversion', '-Wdocumentation']
   endif
-  noexecstack_flags = ['-Wa,--noexecstack' ]
-  noexecstack_link_flags = ['-Wl,-z,noexecstack']
-  cc_compile_flags = cc.get_supported_arguments(common_warning_flags + noexecstack_flags + ['-Wstrict-prototypes'])
-  cxx_compile_flags = cxx.get_supported_arguments(common_warning_flags + noexecstack_flags)
+  cc_compile_flags = cc.get_supported_arguments(common_warning_flags + ['-Wstrict-prototypes'])
+  cxx_compile_flags = cxx.get_supported_arguments(common_warning_flags)
   add_project_arguments(cc_compile_flags, language : 'c')
   add_project_arguments(cxx_compile_flags, language : 'cpp')
-  cc_link_flags = cc.get_supported_link_arguments(noexecstack_link_flags)
-  cxx_link_flags = cxx.get_supported_link_arguments(noexecstack_link_flags)
-  add_project_link_arguments(cc_link_flags, language: 'c')
-  add_project_link_arguments(cxx_link_flags, language: 'cpp')
 elif cc_id == compiler_msvc
   msvc_compile_flags = [ '/D_UNICODE', '/DUNICODE' ]
   if use_multi_thread
@@ -142,7 +135,7 @@ endif
 
 subdir('lib')
 
-if bin_programs or bin_tests
+if bin_programs
   subdir('programs')
 endif
 

build/meson/meson_options.txt

@@ -10,11 +10,11 @@
 
 # Read guidelines from https://wiki.gnome.org/Initiatives/GnomeGoals/MesonPorting
 
-option('legacy_level', type: 'integer', min: 0, max: 7, value: 0,
-  description: 'Support legacy format: 0=disabled, 1-7=support v0.1+ to v0.7+')
+option('legacy_level', type: 'integer', min: 0, max: 7, value: 5,
+  description: 'Support any legacy format: 7 to 1 for v0.7+ to v0.1+')
 option('debug_level', type: 'integer', min: 0, max: 9, value: 1,
   description: 'Enable run-time debug. See lib/common/debug.h')
-option('backtrace', type: 'feature', value: 'disabled',
+option('backtrace', type: 'boolean', value: false,
   description: 'Display a stack backtrace when execution generates a runtime exception')
 option('static_runtime', type: 'boolean', value: false,
   description: 'Link to static run-time libraries on MSVC')
@@ -27,7 +27,7 @@ option('bin_contrib', type: 'boolean', value: false,
   description: 'Enable contrib build')
 
 option('multi_thread', type: 'feature', value: 'enabled',
-  description: 'Enable multi-threading when pthread or Windows is detected')
+  description: 'Enable multi-threading when pthread is detected')
 option('zlib', type: 'feature', value: 'auto',
   description: 'Enable zlib support')
 option('lzma', type: 'feature', value: 'auto',

build/meson/programs/meson.build

@@ -14,27 +14,20 @@ zstd_programs_sources = [join_paths(zstd_rootdir, 'programs/zstdcli.c'),
   join_paths(zstd_rootdir, 'programs/util.c'),
   join_paths(zstd_rootdir, 'programs/timefn.c'),
   join_paths(zstd_rootdir, 'programs/fileio.c'),
-  join_paths(zstd_rootdir, 'programs/fileio_asyncio.c'),
   join_paths(zstd_rootdir, 'programs/benchfn.c'),
   join_paths(zstd_rootdir, 'programs/benchzstd.c'),
   join_paths(zstd_rootdir, 'programs/datagen.c'),
-  join_paths(zstd_rootdir, 'programs/lorem.c'),
   join_paths(zstd_rootdir, 'programs/dibio.c'),
-  join_paths(zstd_rootdir, 'programs/zstdcli_trace.c')]
+  join_paths(zstd_rootdir, 'programs/zstdcli_trace.c'),
+  # needed due to use of private symbol + -fvisibility=hidden
+  join_paths(zstd_rootdir, 'lib/common/xxhash.c')]
 
-zstd_deps = [ libzstd_internal_dep ]
 zstd_c_args = libzstd_debug_cflags
-
-zstd_frugal_deps = [ libzstd_internal_dep ]
-zstd_frugal_c_args = [ '-DZSTD_NOBENCH', '-DZSTD_NODICT', '-DZSTD_NOTRACE' ]
-
 if use_multi_thread
-  zstd_deps += [ thread_dep ]
   zstd_c_args += [ '-DZSTD_MULTITHREAD' ]
-  zstd_frugal_deps += [ thread_dep ]
-  zstd_frugal_c_args += [ '-DZSTD_MULTITHREAD' ]
 endif
 
+zstd_deps = [ libzstd_dep ]
 if use_zlib
   zstd_deps += [ zlib_dep ]
   zstd_c_args += [ '-DZSTD_GZCOMPRESS', '-DZSTD_GZDECOMPRESS' ]
@@ -52,8 +45,7 @@ endif
 
 export_dynamic_on_windows = false
 # explicit backtrace enable/disable for Linux & Darwin
-have_execinfo = cc.has_header('execinfo.h', required: use_backtrace)
-if not have_execinfo
+if not use_backtrace
   zstd_c_args += '-DBACKTRACE_ENABLE=0'
 elif use_debug and host_machine_os == os_windows  # MinGW target
   zstd_c_args += '-DBACKTRACE_ENABLE=1'
@@ -63,8 +55,7 @@ endif
 if cc_id == compiler_msvc
   if default_library_type != 'static'
     zstd_programs_sources += [windows_mod.compile_resources(
-      join_paths(zstd_rootdir, 'build/VS2010/zstd/zstd.rc'),
-      include_directories: libzstd_includes)]
+      join_paths(zstd_rootdir, 'build/VS2010/zstd/zstd.rc'))]
   endif
 endif
 
@@ -73,27 +64,19 @@ zstd = executable('zstd',
   c_args: zstd_c_args,
   dependencies: zstd_deps,
   export_dynamic: export_dynamic_on_windows, # Since Meson 0.45.0
-  build_by_default: bin_programs,
-  install: bin_programs)
-
-if not bin_programs
-  # we generate rules to build the programs, but don't install anything
-  # so do not continue to installing scripts and manpages
-  subdir_done()
-endif
+  install: true)
 
 zstd_frugal_sources = [join_paths(zstd_rootdir, 'programs/zstdcli.c'),
   join_paths(zstd_rootdir, 'programs/timefn.c'),
   join_paths(zstd_rootdir, 'programs/util.c'),
-  join_paths(zstd_rootdir, 'programs/fileio.c'),
-  join_paths(zstd_rootdir, 'programs/fileio_asyncio.c')]
+  join_paths(zstd_rootdir, 'programs/fileio.c')]
 
 # Minimal target, with only zstd compression and decompression.
 # No bench. No legacy.
 executable('zstd-frugal',
   zstd_frugal_sources,
-  dependencies: zstd_frugal_deps,
-  c_args: zstd_frugal_c_args,
+  dependencies: libzstd_dep,
+  c_args: [ '-DZSTD_NOBENCH', '-DZSTD_NODICT', '-DZSTD_NOTRACE' ],
   install: true)
 
 install_data(join_paths(zstd_rootdir, 'programs/zstdgrep'),

build/meson/tests/meson.build

@@ -21,6 +21,7 @@ FUZZER_FLAGS = ['--no-big-tests']
 FUZZERTEST = '-T200s'
 ZSTREAM_TESTTIME = '-T90s'
 DECODECORPUS_TESTTIME = '-T30'
+ZSTDRTTEST = ['--test-large-data']
 
 # =============================================================================
 # Executables
@@ -29,7 +30,6 @@ DECODECORPUS_TESTTIME = '-T30'
 test_includes = [ include_directories(join_paths(zstd_rootdir, 'programs')) ]
 
 testcommon_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
-  join_paths(zstd_rootdir, 'programs/lorem.c'),
   join_paths(zstd_rootdir, 'programs/util.c'),
   join_paths(zstd_rootdir, 'programs/timefn.c'),
   join_paths(zstd_rootdir, 'programs/benchfn.c'),
@@ -38,14 +38,13 @@ testcommon_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
 testcommon = static_library('testcommon',
   testcommon_sources,
   # needed due to use of private symbol + -fvisibility=hidden
-  link_with: libzstd_static)
+  objects: libzstd.extract_all_objects(recursive: false))
 
 testcommon_dep = declare_dependency(link_with: testcommon,
   dependencies: libzstd_deps,
   include_directories: libzstd_includes)
 
-datagen_sources = [join_paths(zstd_rootdir, 'tests/datagencli.c'),
-  join_paths(zstd_rootdir, 'tests/loremOut.c')]
+datagen_sources = [join_paths(zstd_rootdir, 'tests/datagencli.c')]
 datagen = executable('datagen',
   datagen_sources,
   c_args: [ '-DNDEBUG' ],
@@ -67,10 +66,8 @@ fuzzer = executable('fuzzer',
   dependencies: [ testcommon_dep, thread_dep ],
   install: false)
 
-zstreamtest_sources = [
-  join_paths(zstd_rootdir, 'tests/seqgen.c'),
-  join_paths(zstd_rootdir, 'tests/zstreamtest.c'),
-  join_paths(zstd_rootdir, 'tests/external_matchfinder.c')]
+zstreamtest_sources = [join_paths(zstd_rootdir, 'tests/seqgen.c'),
+  join_paths(zstd_rootdir, 'tests/zstreamtest.c')]
 zstreamtest = executable('zstreamtest',
   zstreamtest_sources,
   include_directories: test_includes,
@@ -93,7 +90,7 @@ roundTripCrash = executable('roundTripCrash',
 longmatch_sources = [join_paths(zstd_rootdir, 'tests/longmatch.c')]
 longmatch = executable('longmatch',
   longmatch_sources,
-  dependencies: [ libzstd_internal_dep ],
+  dependencies: [ libzstd_dep ],
   install: false)
 
 invalidDictionaries_sources = [join_paths(zstd_rootdir, 'tests/invalidDictionaries.c')]
@@ -119,7 +116,11 @@ decodecorpus = executable('decodecorpus',
   dependencies: [ testcommon_dep, libm_dep ],
   install: false)
 
-poolTests_sources = [join_paths(zstd_rootdir, 'tests/poolTests.c')]
+poolTests_sources = [join_paths(zstd_rootdir, 'tests/poolTests.c'),
+  join_paths(zstd_rootdir, 'lib/common/pool.c'),
+  join_paths(zstd_rootdir, 'lib/common/threading.c'),
+  join_paths(zstd_rootdir, 'lib/common/zstd_common.c'),
+  join_paths(zstd_rootdir, 'lib/common/error_private.c')]
 poolTests = executable('poolTests',
   poolTests_sources,
   include_directories: test_includes,
@@ -137,38 +138,24 @@ checkTag = executable('checkTag',
 # =============================================================================
 
 if tests_supported_oses.contains(host_machine_os)
-  valgrind_prog = find_program('valgrind', ['/usr/bin/valgrind'], required: false)
+  valgrind_prog = find_program('valgrind', ['/usr/bin/valgrind'], required: true)
   valgrindTest_py = files('valgrindTest.py')
-  if valgrind_prog.found()
-    test('valgrindTest',
-      valgrindTest_py,
-      args: [valgrind_prog.path(), zstd, datagen, fuzzer, fullbench],
-      depends: [zstd, datagen, fuzzer, fullbench],
-      timeout: 600) # Timeout should work on HDD drive
-  endif
+  test('valgrindTest',
+    valgrindTest_py,
+    args: [valgrind_prog.path(), zstd, datagen, fuzzer, fullbench],
+    depends: [zstd, datagen, fuzzer, fullbench],
+    timeout: 600) # Timeout should work on HDD drive
 endif
 
 if host_machine_os != os_windows
   playTests_sh = find_program(join_paths(zstd_rootdir, 'tests/playTests.sh'), required: true)
-
-  # add slow tests only if the meson version is new enough to support
-  # test setups with default-excluded suites
-  if meson.version().version_compare('>=0.57.0')
-    matrix = {'fast': [], 'slow': ['--test-large-data']}
-  else
-    matrix = {'fast': []}
-  endif
-
-  foreach suite, opt: matrix
-    test('test-zstd-'+suite,
-      playTests_sh,
-      args: opt,
-      env: ['ZSTD_BIN=' + zstd.full_path(), 'DATAGEN_BIN=./datagen'],
-      depends: [datagen, zstd],
-      suite: suite,
-      workdir: meson.current_build_dir(),
-      timeout: 2800) # Timeout should work on HDD drive
-  endforeach
+  test('test-zstd',
+    playTests_sh,
+    args: ZSTDRTTEST,
+    env: ['ZSTD_BIN=' + zstd.full_path(), 'DATAGEN_BIN=./datagen'],
+    depends: [datagen],
+    workdir: meson.current_build_dir(),
+    timeout: 2800) # Timeout should work on HDD drive
 endif
 
 test('test-fullbench-1',
@@ -207,11 +194,3 @@ test('test-decodecorpus',
   args: ['-t', DECODECORPUS_TESTTIME],
   timeout: 60)
 test('test-poolTests', poolTests) # should be fast
-
-if meson.version().version_compare('>=0.57.0')
-  add_test_setup('fast',
-    is_default: true,
-    exclude_suites: ['slow'])
-  add_test_setup('slow',
-    exclude_suites: ['fast'])
-endif

build/meson/tests/valgrindTest.py

@@ -19,9 +19,9 @@ def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
 
   subprocess.check_call([*VALGRIND_ARGS, datagen, '-g50M'], stdout=subprocess.DEVNULL)
 
-  if subprocess.call([*VALGRIND_ARGS, zstd, '--fake-stdin-is-console'],
+  if subprocess.call([*VALGRIND_ARGS, zstd],
                      stdout=subprocess.DEVNULL) == 0:
-    raise subprocess.SubprocessError('zstd without argument should have failed')
+    raise subprocess.CalledProcessError('zstd without argument should have failed')
 
   with subprocess.Popen([datagen, '-g80'], stdout=subprocess.PIPE) as p1, \
        subprocess.Popen([*VALGRIND_ARGS, zstd, '-', '-c'],
@@ -30,7 +30,7 @@ def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
     p1.stdout.close()  # Allow p1 to receive a SIGPIPE if p2 exits.
     p2.communicate()
     if p2.returncode != 0:
-      raise subprocess.SubprocessError()
+      raise subprocess.CalledProcessError()
 
   with subprocess.Popen([datagen, '-g16KB'], stdout=subprocess.PIPE) as p1, \
        subprocess.Popen([*VALGRIND_ARGS, zstd, '-vf', '-', '-c'],
@@ -39,7 +39,7 @@ def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
     p1.stdout.close()
     p2.communicate()
     if p2.returncode != 0:
-      raise subprocess.SubprocessError()
+      raise subprocess.CalledProcessError()
 
   with tempfile.NamedTemporaryFile() as tmp_fd:
     with subprocess.Popen([datagen, '-g2930KB'], stdout=subprocess.PIPE) as p1, \
@@ -48,7 +48,7 @@ def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
       p1.stdout.close()
       p2.communicate()
       if p2.returncode != 0:
-        raise subprocess.SubprocessError()
+        raise subprocess.CalledProcessError()
 
     subprocess.check_call([*VALGRIND_ARGS, zstd, '-vdf', tmp_fd.name, '-c'],
                           stdout=subprocess.DEVNULL)
@@ -60,7 +60,7 @@ def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
       p1.stdout.close()
       p2.communicate()
       if p2.returncode != 0:
-        raise subprocess.SubprocessError()
+        raise subprocess.CalledProcessError()
 
   subprocess.check_call([*VALGRIND_ARGS, fuzzer, '-T1mn', '-t1'])
   subprocess.check_call([*VALGRIND_ARGS, fullbench, '-i1'])

build/single_file_libs/.gitignore

@@ -4,7 +4,6 @@ zstddeclib.c
 zstdenclib.c
 zstd.c
 zstd.h
-zstd_errors.h
 
 # test artifacts
 temp*

build/single_file_libs/README.md

@@ -12,7 +12,7 @@ This is the most common use case. The decompression library is small, adding, fo
 Create `zstddeclib.c` from the Zstd source using:
 ```
 cd zstd/build/single_file_libs
-python3 combine.py -r ../../lib -x legacy/zstd_legacy.h -o zstddeclib.c zstddeclib-in.c
+./combine.sh -r ../../lib -o zstddeclib.c zstddeclib-in.c
 ```
 Then add the resulting file to your project (see the [example files](examples)).
 
@@ -26,7 +26,7 @@ The same tool can amalgamate the entire Zstd library for ease of adding both com
 Create `zstd.c` from the Zstd source using:
 ```
 cd zstd/build/single_file_libs
-python3 combine.py -r ../../lib -x legacy/zstd_legacy.h -k zstd.h -o zstd.c zstd-in.c
+./combine.sh -r ../../lib -o zstd.c zstd-in.c
 ```
 It's possible to create a compressor-only library but since the decompressor is so small in comparison this doesn't bring much of a gain (but for the curious, simply remove the files in the _decompress_ section at the end of `zstd-in.c`).
 

build/single_file_libs/build_decoder_test.sh

@@ -11,7 +11,7 @@ IN_FILES="examples/emscripten.c"
 
 # Emscripten build using emcc.
 emscripten_emcc_build() {
-  # Compile the same example as above
+  # Compile the the same example as above
   CC_FLAGS="-Wall -Wextra -Wshadow -Werror -Os -g0 -flto"
   emcc $CC_FLAGS -s WASM=1 -I. -o $OUT_WASM $IN_FILES
   # Did compilation work?

build/single_file_libs/build_library_test.sh

@@ -14,7 +14,7 @@ IN_FILES="zstd.c examples/roundtrip.c"
 
 # Emscripten build using emcc.
 emscripten_emcc_build() {
-  # Compile the same example as above
+  # Compile the the same example as above
   CC_FLAGS="-Wall -Wextra -Wshadow -Werror -Os -g0 -flto"
   emcc $CC_FLAGS -s WASM=1 -I. -o $OUT_WASM $IN_FILES
   # Did compilation work?
@@ -69,8 +69,7 @@ fi
 echo "Single file library creation script: PASSED"
 
 # Copy the header to here (for the tests)
-cp "$ZSTD_SRC_ROOT/zstd.h" examples/zstd.h
-cp "$ZSTD_SRC_ROOT/zstd_errors.h" examples/zstd_errors.h
+cp "$ZSTD_SRC_ROOT/zstd.h" zstd.h
 
 # Compile the generated output
 cc -Wall -Wextra -Werror -Wshadow -pthread -I. -Os -g0 -o $OUT_FILE zstd.c examples/roundtrip.c

build/single_file_libs/combine.py

@@ -1,234 +0,0 @@
-#!/usr/bin/env python3
-
-# Tool to bundle multiple C/C++ source files, inlining any includes.
-# 
-# Note: there are two types of exclusion options: the '-x' flag, which besides
-# excluding a file also adds an #error directive in place of the #include, and
-# the '-k' flag, which keeps the #include and doesn't inline the file. The
-# intended use cases are: '-x' for files that would normally be #if'd out, so
-# features that 100% won't be used in the amalgamated file, for which every
-# occurrence adds the error, and '-k' for headers that we wish to manually
-# include, such as a project's public API, for which occurrences after the first
-# are removed.
-# 
-# Todo: the error handling could be better, which currently throws and halts
-# (which is functional just not very friendly).
-# 
-# Author: Carl Woffenden, Numfum GmbH (this script is released under a CC0 license/Public Domain)
-
-import argparse, re, sys
-
-from pathlib import Path
-from typing import Any, List, Optional, Pattern, Set, TextIO
-
-# Set of file roots when searching (equivalent to -I paths for the compiler).
-roots: Set[Path] = set()
-
-# Set of (canonical) file Path objects to exclude from inlining (and not only
-# exclude but to add a compiler error directive when they're encountered).
-excludes: Set[Path] = set()
-
-# Set of (canonical) file Path objects to keep as include directives.
-keeps: Set[Path] = set()
-
-# Whether to keep the #pragma once directives (unlikely, since this will result
-# in a warning, but the option is there).
-keep_pragma: bool = False
-
-# Destination file object (or stdout if no output file was supplied).
-destn: TextIO = sys.stdout
-
-# Set of file Path objects previously inlined (and to ignore if reencountering).
-found: Set[Path] = set()
-
-# Compiled regex Pattern to handle "#pragma once" in various formats:
-# 
-#   #pragma once
-#     #pragma once
-#   #  pragma once
-#   #pragma   once
-#   #pragma once // comment
-# 
-# Ignoring commented versions, same as include_regex.
-# 
-pragma_regex: Pattern = re.compile(r'^\s*#\s*pragma\s*once\s*')
-
-# Compiled regex Pattern to handle the following type of file includes:
-# 
-#   #include "file"
-#     #include "file"
-#   #  include "file"
-#   #include   "file"
-#   #include "file" // comment
-#   #include "file" // comment with quote "
-# 
-# And all combinations of, as well as ignoring the following:
-# 
-#   #include <file>
-#   //#include "file"
-#   /*#include "file"*/
-# 
-# We don't try to catch errors since the compiler will do this (and the code is
-# expected to be valid before processing) and we don't care what follows the
-# file (whether it's a valid comment or not, since anything after the quoted
-# string is ignored)
-# 
-include_regex: Pattern = re.compile(r'^\s*#\s*include\s*"(.+?)"')
-
-# Simple tests to prove include_regex's cases.
-# 
-def test_match_include() -> bool:
-    if (include_regex.match('#include "file"')   and
-        include_regex.match('  #include "file"') and
-        include_regex.match('#  include "file"') and
-        include_regex.match('#include   "file"') and
-        include_regex.match('#include "file" // comment')):
-            if (not include_regex.match('#include <file>')   and
-                not include_regex.match('//#include "file"') and
-                not include_regex.match('/*#include "file"*/')):
-                    found = include_regex.match('#include "file" // "')
-                    if (found and found.group(1) == 'file'):
-                        print('#include match valid')
-                        return True
-    return False
-
-# Simple tests to prove pragma_regex's cases.
-# 
-def test_match_pragma() -> bool:
-    if (pragma_regex.match('#pragma once')   and
-        pragma_regex.match('  #pragma once') and
-        pragma_regex.match('#  pragma once') and
-        pragma_regex.match('#pragma   once') and
-        pragma_regex.match('#pragma once // comment')):
-            if (not pragma_regex.match('//#pragma once') and
-                not pragma_regex.match('/*#pragma once*/')):
-                    print('#pragma once match valid')
-                    return True
-    return False
-
-# Finds 'file'. First the list of 'root' paths are searched, followed by the
-# currently processing file's 'parent' path, returning a valid Path in
-# canonical form. If no match is found None is returned.
-# 
-def resolve_include(file: str, parent: Optional[Path] = None) -> Optional[Path]:
-    for root in roots:
-        found = root.joinpath(file).resolve()
-        if (found.is_file()):
-            return found
-    if (parent):
-        found = parent.joinpath(file).resolve();
-    else:
-        found = Path(file)
-    if (found.is_file()):
-        return found
-    return None
-
-# Helper to resolve lists of files. 'file_list' is passed in from the arguments
-# and each entry resolved to its canonical path (like any include entry, either
-# from the list of root paths or the owning file's 'parent', which in this case
-# is case is the input file). The results are stored in 'resolved'.
-# 
-def resolve_excluded_files(file_list: Optional[List[str]], resolved: Set[Path], parent: Optional[Path] = None) -> None:
-    if (file_list):
-        for filename in file_list:
-            found = resolve_include(filename, parent)
-            if (found):
-                resolved.add(found)
-            else:
-                error_line(f'Warning: excluded file not found: {filename}')
-
-# Writes 'line' to the open 'destn' (or stdout).
-# 
-def write_line(line: str) -> None:
-    print(line, file=destn)
-
-# Logs 'line' to stderr. This is also used for general notifications that we
-# don't want to go to stdout (so the source can be piped).
-# 
-def error_line(line: Any) -> None:
-    print(line, file=sys.stderr)
-
-# Inline the contents of 'file' (with any of its includes also inlined, etc.).
-# 
-# Note: text encoding errors are ignored and replaced with ? when reading the
-# input files. This isn't ideal, but it's more than likely in the comments than
-# code and a) the text editor has probably also failed to read the same content,
-# and b) the compiler probably did too.
-# 
-def add_file(file: Path, file_name: str = None) -> None:
-    if (file.is_file()):
-        if (not file_name):
-            file_name = file.name
-        error_line(f'Processing: {file_name}')
-        with file.open('r', errors='replace') as opened:
-            for line in opened:
-                line = line.rstrip('\n')
-                match_include = include_regex.match(line);
-                if (match_include):
-                    # We have a quoted include directive so grab the file
-                    inc_name = match_include.group(1)
-                    resolved = resolve_include(inc_name, file.parent)
-                    if (resolved):
-                        if (resolved in excludes):
-                            # The file was excluded so error if the compiler uses it
-                            write_line(f'#error Using excluded file: {inc_name} (re-amalgamate source to fix)')
-                            error_line(f'Excluding: {inc_name}')
-                        else:
-                            if (resolved not in found):
-                                # The file was not previously encountered
-                                found.add(resolved)
-                                if (resolved in keeps):
-                                    # But the include was flagged to keep as included
-                                    write_line(f'/**** *NOT* inlining {inc_name} ****/')
-                                    write_line(line)
-                                    error_line(f'Not inlining: {inc_name}')
-                                else:
-                                    # The file was neither excluded nor seen before so inline it
-                                    write_line(f'/**** start inlining {inc_name} ****/')
-                                    add_file(resolved, inc_name)
-                                    write_line(f'/**** ended inlining {inc_name} ****/')
-                            else:
-                                write_line(f'/**** skipping file: {inc_name} ****/')
-                    else:
-                        # The include file didn't resolve to a file
-                        write_line(f'#error Unable to find: {inc_name}')
-                        error_line(f'Error: Unable to find: {inc_name}')
-                else:
-                    # Skip any 'pragma once' directives, otherwise write the source line
-                    if (keep_pragma or not pragma_regex.match(line)):
-                        write_line(line)
-    else:
-        error_line(f'Error: Invalid file: {file}')
-
-# Start here
-parser = argparse.ArgumentParser(description='Amalgamate Tool', epilog=f'example: {sys.argv[0]} -r ../my/path -r ../other/path -o out.c in.c')
-parser.add_argument('-r', '--root', action='append', type=Path, help='file root search path')
-parser.add_argument('-x', '--exclude',  action='append', help='file to completely exclude from inlining')
-parser.add_argument('-k', '--keep', action='append', help='file to exclude from inlining but keep the include directive')
-parser.add_argument('-p', '--pragma', action='store_true', default=False, help='keep any "#pragma once" directives (removed by default)')
-parser.add_argument('-o', '--output', type=argparse.FileType('w'), help='output file (otherwise stdout)')
-parser.add_argument('input', type=Path, help='input file')
-args = parser.parse_args()
-
-# Fail early on an invalid input (and store it so we don't recurse)
-args.input = args.input.resolve(strict=True)
-found.add(args.input)
-
-# Resolve all of the root paths upfront (we'll halt here on invalid roots)
-if (args.root):
-    for path in args.root:
-        roots.add(path.resolve(strict=True))
-
-# The remaining params: so resolve the excluded files and #pragma once directive
-resolve_excluded_files(args.exclude, excludes, args.input.parent)
-resolve_excluded_files(args.keep,    keeps,    args.input.parent)
-keep_pragma = args.pragma;
-
-# Then recursively process the input file
-try:
-    if (args.output):
-        destn = args.output
-    add_file(args.input)
-finally:
-    if (destn):
-        destn.close()

build/single_file_libs/combine.sh

@@ -2,7 +2,11 @@
 
 # Tool to bundle multiple C/C++ source files, inlining any includes.
 # 
+# Note: this POSIX-compliant script is many times slower than the original bash
+# implementation (due to the grep calls) but it runs and works everywhere.
+# 
 # TODO: ROOTS, FOUND, etc., as arrays (since they fail on paths with spaces)
+# TODO: revert to Bash-only regex (the grep ones being too slow)
 # 
 # Author: Carl Woffenden, Numfum GmbH (this script is released under a CC0 license/Public Domain)
 
@@ -48,54 +52,13 @@ test_deps() {
   fi
 }
 
-# Test if glob pattern $1 matches subject $2 (see fnmatch(3))
-fnmatch() {
-  case "$2" in
-  $1)
-    return 0
-    ;;
-  esac
-  return 1
-}
-
-# Test if line $1 is local include directive
-is_include_line() {
-  fnmatch "*#*include*" "$1" || return 1
-  printf "%s\n" "$1" | grep -Eq '^\s*#\s*include\s*".+"'
-}
-
-# Test if line $1 is pragma once directive
-is_pragma_once_line() {
-  fnmatch "*#*pragma*once*" "$1" || return 1
-  printf "%s\n" "$1" | grep -Eq '^\s*#\s*pragma\s*once\s*'
-}
-
 # Tests if list $1 has item $2 (returning zero on a match)
-# (originally used grep -Eq "(^|\s*)$2(\$|\s*))
-readonly list_FS="$IFS"
 list_has_item() {
-  # Re: escaping glob pattern special characters in item string:
-  #
-  # bash (tested 3.2.57, 5.1.4), dash (tested 0.5.10.2), NetBSD /bin/sh
-  # (tested 8.2), and Solaris /bin/sh (tested 11.4) require escaping
-  # backslashes in a bracket expression despite POSIX specifying that
-  # backslash loses significance in a bracket expression.
-  #
-  # Conversely, neither FreeBSD /bin/sh (tested 12.2) nor OpenBSD /bin/sh
-  # (tested 7.1) obey backslash-escaping in case statement patterns even
-  # outside bracket expressions, so escape special characters using bracket
-  # expressions.
-  #
-  # Solaris /bin/sh (tested 11.4) requires vertical bar (|) to be escaped.
-  #
-  # All accommodations should behave as expected under strict POSIX semantics.
-  if fnmatch "*[\\*?[|]*" "$2"; then
-    set -- "$1" "$(printf '%s\n' "$2" | sed -e 's/[*?[|]/[&]/g; s/[\]/[\\&]/g')"
+  if echo "$1" | grep -Eq "(^|\s*)$2(\$|\s*)"; then
+    return 0
+  else
+    return 1
   fi
-  for item_P in "*[$list_FS]$2[$list_FS]*" "*[$list_FS]$2" "$2[$list_FS]*" "$2"; do
-    fnmatch "${item_P}" "$1" && return 0
-  done
-  return 1
 }
 
 # Adds a new line with the supplied arguments to $DESTN (or stdout)
@@ -161,13 +124,13 @@ add_file() {
     # Read the file
     local line=
     while IFS= read -r line; do
-      if is_include_line "$line"; then
+      if echo "$line" | grep -Eq '^\s*#\s*include\s*".+"'; then
         # We have an include directive so strip the (first) file
         local inc=$(echo "$line" | grep -Eo '".*"' | sed -E 's/"([^"]+)"/\1/' | head -1)
         local res_inc="$(resolve_include "$srcdir" "$inc")"
         if list_has_item "$XINCS" "$inc"; then
           # The file was excluded so error if the source attempts to use it
-          write_line "#error Using excluded file: $inc (re-amalgamate source to fix)"
+          write_line "#error Using excluded file: $inc"
           log_line "Excluding: $inc"
         else
           if ! list_has_item "$FOUND" "$res_inc"; then
@@ -192,7 +155,7 @@ add_file() {
         # Skip any 'pragma once' directives, otherwise write the source line
         local write=$PONCE
         if [ $write -eq 0 ]; then
-          if ! is_pragma_once_line "$line"; then
+          if echo "$line" | grep -Eqv '^\s*#\s*pragma\s*once\s*'; then
             write=1
           fi
         fi
@@ -237,7 +200,6 @@ if [ -n "$1" ]; then
       printf "" > "$DESTN"
     fi
     test_deps
-    log_line "Processing using the slower shell script; this might take a while"
     add_file "$1"
   else
     echo "Input file not found: \"$1\""

build/single_file_libs/create_single_file_decoder.sh

@@ -4,13 +4,8 @@
 ZSTD_SRC_ROOT="../../lib"
 
 # Amalgamate the sources
-echo "Amalgamating files..."
-# Using the faster Python script if we have 3.8 or higher
-if python3 -c 'import sys; assert sys.version_info >= (3,8)' 2>/dev/null; then
-  ./combine.py -r "$ZSTD_SRC_ROOT" -x legacy/zstd_legacy.h -o zstddeclib.c zstddeclib-in.c
-else
-  ./combine.sh -r "$ZSTD_SRC_ROOT" -x legacy/zstd_legacy.h -o zstddeclib.c zstddeclib-in.c
-fi
+echo "Amalgamating files... this can take a while"
+./combine.sh -r "$ZSTD_SRC_ROOT" -o zstddeclib.c zstddeclib-in.c
 # Did combining work?
 if [ $? -ne 0 ]; then
   echo "Combine script: FAILED"

build/single_file_libs/create_single_file_library.sh

@@ -4,13 +4,8 @@
 ZSTD_SRC_ROOT="../../lib"
 
 # Amalgamate the sources
-echo "Amalgamating files..."
-# Using the faster Python script if we have 3.8 or higher
-if python3 -c 'import sys; assert sys.version_info >= (3,8)' 2>/dev/null; then
-  ./combine.py -r "$ZSTD_SRC_ROOT" -x legacy/zstd_legacy.h -o zstd.c zstd-in.c
-else
-  ./combine.sh -r "$ZSTD_SRC_ROOT" -x legacy/zstd_legacy.h -o zstd.c zstd-in.c
-fi
+echo "Amalgamating files... this can take a while"
+./combine.sh -r "$ZSTD_SRC_ROOT" -o zstd.c zstd-in.c
 # Did combining work?
 if [ $? -ne 0 ]; then
   echo "Combine script: FAILED"

build/single_file_libs/zstd-in.c

@@ -4,11 +4,11 @@
  *
  * Generate using:
  * \code
- *	python combine.py -r ../../lib -x legacy/zstd_legacy.h -o zstd.c zstd-in.c
+ *	combine.sh -r ../../lib -o zstd.c zstd-in.c
  * \endcode
  */
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -25,13 +25,9 @@
  * Note: MEM_MODULE stops xxhash redefining BYTE, U16, etc., which are also
  * defined in mem.h (breaking C99 compatibility).
  *
- * Note: the undefs for xxHash allow Zstd's implementation to coincide with
+ * Note: the undefs for xxHash allow Zstd's implementation to coincide with with
  * standalone xxHash usage (with global defines).
  *
- * Note: if you enable ZSTD_LEGACY_SUPPORT the combine.py script will need
- * re-running without the "-x legacy/zstd_legacy.h" option (it excludes the
- * legacy support at the source level).
- *
  * Note: multithreading is enabled for all platforms apart from Emscripten.
  */
 #define DEBUGLEVEL 0
@@ -69,7 +65,6 @@
 #include "compress/zstd_compress_literals.c"
 #include "compress/zstd_compress_sequences.c"
 #include "compress/zstd_compress_superblock.c"
-#include "compress/zstd_preSplit.c"
 #include "compress/zstd_compress.c"
 #include "compress/zstd_double_fast.c"
 #include "compress/zstd_fast.c"

build/single_file_libs/zstddeclib-in.c

@@ -4,11 +4,11 @@
  *
  * Generate using:
  * \code
- *	python combine.py -r ../../lib -x legacy/zstd_legacy.h -o zstddeclib.c zstddeclib-in.c
+ *	combine.sh -r ../../lib -o zstddeclib.c zstddeclib-in.c
  * \endcode
  */
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -25,12 +25,8 @@
  * Note: MEM_MODULE stops xxhash redefining BYTE, U16, etc., which are also
  * defined in mem.h (breaking C99 compatibility).
  *
- * Note: the undefs for xxHash allow Zstd's implementation to coincide with
+ * Note: the undefs for xxHash allow Zstd's implementation to coincide with with
  * standalone xxHash usage (with global defines).
- *
- * Note: if you enable ZSTD_LEGACY_SUPPORT the combine.py script will need
- * re-running without the "-x legacy/zstd_legacy.h" option (it excludes the
- * legacy support at the source level).
  */
 #define DEBUGLEVEL 0
 #define MEM_MODULE

contrib/VS2005/zstd/zstd.vcproj

@@ -363,10 +363,6 @@
 				RelativePath="..\..\..\programs\fileio.c"
 				>
 			</File>
-			<File
-                RelativePath="..\..\..\programs\fileio_asyncio.c"
-                >
-            </File>
 			<File
 				RelativePath="..\..\..\lib\compress\fse_compress.c"
 				>

contrib/diagnose_corruption/Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2019-present, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

contrib/diagnose_corruption/check_flipped_bits.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2019-present, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/docker/Dockerfile

@@ -1,13 +1,13 @@
 # Dockerfile
 # First image to build the binary
-FROM alpine@sha256:69665d02cb32192e52e07644d76bc6f25abeb5410edc1c7a81a10ba3f0efb90a as builder
+FROM alpine as builder
 
 RUN apk --no-cache add make gcc libc-dev
 COPY . /src
 RUN mkdir /pkg && cd /src && make && make DESTDIR=/pkg install
 
 # Second minimal image to only keep the built binary
-FROM alpine@sha256:69665d02cb32192e52e07644d76bc6f25abeb5410edc1c7a81a10ba3f0efb90a
+FROM alpine
 
 # Copy the built files
 COPY --from=builder /pkg /

contrib/externalSequenceProducer/.gitignore

@@ -1,2 +0,0 @@
-# build artifacts
-externalSequenceProducer

contrib/externalSequenceProducer/Makefile

@@ -1,40 +0,0 @@
-# ################################################################
-# Copyright (c) Yann Collet, Meta Platforms, Inc.
-# All rights reserved.
-#
-# This source code is licensed under both the BSD-style license (found in the
-# LICENSE file in the root directory of this source tree) and the GPLv2 (found
-# in the COPYING file in the root directory of this source tree).
-# ################################################################
-
-PROGDIR = ../../programs
-LIBDIR  = ../../lib
-
-LIBZSTD = $(LIBDIR)/libzstd.a
-
-CPPFLAGS+= -I$(LIBDIR) -I$(LIBDIR)/compress -I$(LIBDIR)/common
-
-CFLAGS  ?= -O3
-CFLAGS  += -std=gnu99
-DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-            -Wstrict-aliasing=1 -Wswitch-enum \
-            -Wstrict-prototypes -Wundef -Wpointer-arith \
-            -Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-            -Wredundant-decls
-CFLAGS  += $(DEBUGFLAGS) $(MOREFLAGS)
-
-default: externalSequenceProducer
-
-all: externalSequenceProducer
-
-externalSequenceProducer: sequence_producer.c main.c $(LIBZSTD)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $^ $(LDFLAGS) -o $@
-
-.PHONY: $(LIBZSTD)
-$(LIBZSTD):
-	$(MAKE) -C $(LIBDIR) libzstd.a CFLAGS="$(CFLAGS)"
-
-clean:
-	$(RM) *.o
-	$(MAKE) -C $(LIBDIR) clean > /dev/null
-	$(RM) externalSequenceProducer

contrib/externalSequenceProducer/README.md

@@ -1,14 +0,0 @@
-externalSequenceProducer
-=====================
-
-`externalSequenceProducer` is a test tool for the Block-Level Sequence Producer API.
-It demonstrates how to use the API to perform a simple round-trip test.
-
-A sample sequence producer is provided in sequence_producer.c, but the user can swap
-this out with a different one if desired. The sample sequence producer implements
-LZ parsing with a 1KB hashtable. Dictionary-based parsing is not currently supported.
-
-Command line :
-```
-externalSequenceProducer filename
-```

contrib/externalSequenceProducer/main.c

@@ -1,108 +0,0 @@
-/*
- * Copyright (c) Yann Collet, Meta Platforms, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- * You may select, at your option, one of the above-listed licenses.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#define ZSTD_STATIC_LINKING_ONLY
-#include "zstd.h"
-#include "zstd_errors.h"
-#include "sequence_producer.h" // simpleSequenceProducer
-
-#define CHECK(res)                                      \
-do {                                                    \
-    if (ZSTD_isError(res)) {                            \
-        printf("ERROR: %s\n", ZSTD_getErrorName(res));  \
-        return 1;                                       \
-    }                                                   \
-} while (0)                                             \
-
-int main(int argc, char *argv[]) {
-    int retn = 0;
-    if (argc != 2) {
-        printf("Usage: externalSequenceProducer <file>\n");
-        return 1;
-    }
-
-    ZSTD_CCtx* const zc = ZSTD_createCCtx();
-
-    int simpleSequenceProducerState = 0xdeadbeef;
-
-    // Here is the crucial bit of code!
-    ZSTD_registerSequenceProducer(
-        zc,
-        &simpleSequenceProducerState,
-        simpleSequenceProducer
-    );
-
-    {
-        size_t const res = ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 1);
-        CHECK(res);
-    }
-
-    FILE *f = fopen(argv[1], "rb");
-    assert(f);
-    {
-        int const ret = fseek(f, 0, SEEK_END);
-        assert(ret == 0);
-    }
-    size_t const srcSize = ftell(f);
-    {
-        int const ret = fseek(f, 0, SEEK_SET);
-        assert(ret == 0);
-    }
-
-    char* const src = malloc(srcSize + 1);
-    assert(src);
-    {
-        size_t const ret = fread(src, srcSize, 1, f);
-        assert(ret == 1);
-        int const ret2 = fclose(f);
-        assert(ret2 == 0);
-    }
-
-    size_t const dstSize = ZSTD_compressBound(srcSize);
-    char* const dst = malloc(dstSize);
-    assert(dst);
-
-    size_t const cSize = ZSTD_compress2(zc, dst, dstSize, src, srcSize);
-    CHECK(cSize);
-
-    char* const val = malloc(srcSize);
-    assert(val);
-
-    {
-        size_t const res = ZSTD_decompress(val, srcSize, dst, cSize);
-        CHECK(res);
-    }
-
-    if (memcmp(src, val, srcSize) == 0) {
-        printf("Compression and decompression were successful!\n");
-        printf("Original size: %lu\n", srcSize);
-        printf("Compressed size: %lu\n", cSize);
-    } else {
-        printf("ERROR: input and validation buffers don't match!\n");
-        for (size_t i = 0; i < srcSize; i++) {
-            if (src[i] != val[i]) {
-                printf("First bad index: %zu\n", i);
-                break;
-            }
-        }
-        retn = 1;
-    }
-
-    ZSTD_freeCCtx(zc);
-    free(src);
-    free(dst);
-    free(val);
-    return retn;
-}

contrib/externalSequenceProducer/sequence_producer.c

@@ -1,80 +0,0 @@
-/*
- * Copyright (c) Yann Collet, Meta Platforms, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- * You may select, at your option, one of the above-listed licenses.
- */
-
-#include "zstd_compress_internal.h"
-#include "sequence_producer.h"
-
-#define HSIZE 1024
-static U32 const HLOG = 10;
-static U32 const MLS = 4;
-static U32 const BADIDX = 0xffffffff;
-
-size_t simpleSequenceProducer(
-  void* sequenceProducerState,
-  ZSTD_Sequence* outSeqs, size_t outSeqsCapacity,
-  const void* src, size_t srcSize,
-  const void* dict, size_t dictSize,
-  int compressionLevel,
-  size_t windowSize
-) {
-    const BYTE* const istart = (const BYTE*)src;
-    const BYTE* const iend = istart + srcSize;
-    const BYTE* ip = istart;
-    const BYTE* anchor = istart;
-    size_t seqCount = 0;
-    U32 hashTable[HSIZE];
-
-    (void)sequenceProducerState;
-    (void)dict;
-    (void)dictSize;
-    (void)outSeqsCapacity;
-    (void)compressionLevel;
-
-    {   int i;
-        for (i=0; i < HSIZE; i++) {
-            hashTable[i] = BADIDX;
-    }   }
-
-    while (ip + MLS < iend) {
-        size_t const hash = ZSTD_hashPtr(ip, HLOG, MLS);
-        U32 const matchIndex = hashTable[hash];
-        hashTable[hash] = (U32)(ip - istart);
-
-        if (matchIndex != BADIDX) {
-            const BYTE* const match = istart + matchIndex;
-            U32 const matchLen = (U32)ZSTD_count(ip, match, iend);
-            if (matchLen >= ZSTD_MINMATCH_MIN) {
-                U32 const litLen = (U32)(ip - anchor);
-                U32 const offset = (U32)(ip - match);
-                ZSTD_Sequence const seq = {
-                    offset, litLen, matchLen, 0
-                };
-
-                /* Note: it's crucial to stay within the window size! */
-                if (offset <= windowSize) {
-                    outSeqs[seqCount++] = seq;
-                    ip += matchLen;
-                    anchor = ip;
-                    continue;
-                }
-            }
-        }
-
-        ip++;
-    }
-
-    {   ZSTD_Sequence const finalSeq = {
-            0, (U32)(iend - anchor), 0, 0
-        };
-        outSeqs[seqCount++] = finalSeq;
-    }
-
-    return seqCount;
-}

contrib/externalSequenceProducer/sequence_producer.h

@@ -1,26 +0,0 @@
-/*
- * Copyright (c) Yann Collet, Meta Platforms, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- * You may select, at your option, one of the above-listed licenses.
- */
-
-#ifndef MATCHFINDER_H
-#define MATCHFINDER_H
-
-#define ZSTD_STATIC_LINKING_ONLY
-#include "zstd.h"
-
-size_t simpleSequenceProducer(
-  void* sequenceProducerState,
-  ZSTD_Sequence* outSeqs, size_t outSeqsCapacity,
-  const void* src, size_t srcSize,
-  const void* dict, size_t dictSize,
-  int compressionLevel,
-  size_t windowSize
-);
-
-#endif

contrib/freestanding_lib/freestanding.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2021-2021, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -340,7 +340,7 @@ class PartialPreprocessor(object):
 
                 if macro2 is not None and not resolved:
                     assert ifdef and defined and op == '&&' and cmp is not None
-                    # If the statement is true, but we have a single value check, then
+                    # If the statment is true, but we have a single value check, then
                     # check the value.
                     defined_value = self._defs[macro]
                     are_ints = True
@@ -431,7 +431,7 @@ class Freestanding(object):
             external_xxhash: bool, xxh64_state: Optional[str],
             xxh64_prefix: Optional[str], rewritten_includes: [(str, str)],
             defs: [(str, Optional[str])], replaces: [(str, str)],
-            undefs: [str], excludes: [str], seds: [str], spdx: bool,
+            undefs: [str], excludes: [str], seds: [str],
     ):
         self._zstd_deps = zstd_deps
         self._mem = mem
@@ -446,7 +446,6 @@ class Freestanding(object):
         self._undefs = undefs
         self._excludes = excludes
         self._seds = seds
-        self._spdx = spdx
 
     def _dst_lib_file_paths(self):
         """
@@ -641,27 +640,6 @@ class Freestanding(object):
         for sed in self._seds:
             self._process_sed(sed)
 
-    def _process_spdx(self):
-        if not self._spdx:
-            return
-        self._log("Processing spdx")
-        SPDX_C = "// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause\n"
-        SPDX_H_S = "/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */\n"
-        for filepath in self._dst_lib_file_paths():
-            file = FileLines(filepath)
-            if file.lines[0] == SPDX_C or file.lines[0] == SPDX_H_S:
-                continue
-            for line in file.lines:
-                if "SPDX-License-Identifier" in line:
-                    raise RuntimeError(f"Unexpected SPDX license identifier: {file.filename} {repr(line)}")
-            if file.filename.endswith(".c"):
-                file.lines.insert(0, SPDX_C)
-            elif file.filename.endswith(".h") or file.filename.endswith(".S"):
-                file.lines.insert(0, SPDX_H_S)
-            else:
-                raise RuntimeError(f"Unexpected file extension: {file.filename}")
-            file.write()
-
 
 
     def go(self):
@@ -673,7 +651,6 @@ class Freestanding(object):
         self._rewrite_includes()
         self._replace_xxh64_prefix()
         self._process_seds()
-        self._process_spdx()
 
 
 def parse_optional_pair(defines: [str]) -> [(str, Optional[str])]:
@@ -712,9 +689,8 @@ def main(name, args):
     parser.add_argument("--xxh64-prefix", default=None, help="Alternate XXH64 function prefix (excluding _) e.g. --xxh64-prefix=xxh64")
     parser.add_argument("--rewrite-include", default=[], dest="rewritten_includes", action="append", help="Rewrite an include REGEX=NEW (e.g. '<stddef\\.h>=<linux/types.h>')")
     parser.add_argument("--sed", default=[], dest="seds", action="append", help="Apply a sed replacement. Format: `s/REGEX/FORMAT/[g]`. REGEX is a Python regex. FORMAT is a Python format string formatted by the regex dict.")
-    parser.add_argument("--spdx", action="store_true", help="Add SPDX License Identifiers")
     parser.add_argument("-D", "--define", default=[], dest="defs", action="append", help="Pre-define this macro (can be passed multiple times)")
-    parser.add_argument("-U", "--undefine", default=[], dest="undefs", action="append", help="Pre-undefine this macro (can be passed multiple times)")
+    parser.add_argument("-U", "--undefine", default=[], dest="undefs", action="append", help="Pre-undefine this macro (can be passed mutliple times)")
     parser.add_argument("-R", "--replace", default=[], dest="replaces", action="append", help="Pre-define this macro and replace the first ifndef block with its definition")
     parser.add_argument("-E", "--exclude", default=[], dest="excludes", action="append", help="Exclude all lines between 'BEGIN <EXCLUDE>' and 'END <EXCLUDE>'")
     args = parser.parse_args(args)
@@ -767,7 +743,6 @@ def main(name, args):
         args.undefs,
         args.excludes,
         args.seds,
-        args.spdx,
     ).go()
 
 if __name__ == "__main__":

contrib/gen_html/Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2016-present, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -40,7 +40,7 @@ gen_html: gen_html.cpp
 
 $(ZSTDMANUAL): gen_html $(ZSTDAPI)
 	echo "Update zstd manual in /doc"
-	./gen_html$(EXT) $(LIBVER) $(ZSTDAPI) $(ZSTDMANUAL)
+	./gen_html $(LIBVER) $(ZSTDAPI) $(ZSTDMANUAL)
 
 .PHONY: manual
 manual: gen_html $(ZSTDMANUAL)

contrib/gen_html/gen_html.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Przemyslaw Skibinski, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -211,7 +211,6 @@ int main(int argc, char *argv[]) {
 
     ostream << "<html>\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">\n<title>" << version << "</title>\n</head>\n<body>" << endl;
     ostream << "<h1>" << version << "</h1>\n";
-    ostream << "Note: the content of this file has been automatically generated by parsing \"zstd.h\" \n";
 
     ostream << "<hr>\n<a name=\"Contents\"></a><h2>Contents</h2>\n<ol>\n";
     for (size_t i=0; i<chapters.size(); i++)

contrib/largeNbDicts/Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2018-present, Yann Collet, Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

contrib/largeNbDicts/README.md

@@ -14,20 +14,12 @@ Command line :
 ```
 largeNbDicts [Options] filename(s)
 
-Options : 
--z          : benchmark compression (default) 
--d          : benchmark decompression 
--r          : recursively load all files in subdirectories (default: off) 
--B#         : split input into blocks of size # (default: no split) 
--#          : use compression level # (default: 3) 
--D #        : use # as a dictionary (default: create one) 
--i#         : nb benchmark rounds (default: 6) 
---nbBlocks=#: use # blocks for bench (default: one per file) 
---nbDicts=# : create # dictionaries for bench (default: one per block) 
--h          : help (this text) 
- 
-Advanced Options (see zstd.h for documentation) : 
---dedicated-dict-search
---dict-content-type=#
---dict-attach-pref=#
+Options :
+-r           : recursively load all files in subdirectories (default: off)
+-B#          : split input into blocks of size # (default: no split)
+-#           : use compression level # (default: 3)
+-D #         : use # as a dictionary (default: create one)
+-i#          : nb benchmark rounds (default: 6)
+--nbDicts=#  : set nb of dictionaries to # (default: one per block)
+-h           : help (this text)
 ```

contrib/largeNbDicts/largeNbDicts.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2018-present, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -19,7 +19,7 @@
 /*---  Dependencies  ---*/
 
 #include <stddef.h>   /* size_t */
-#include <stdlib.h>   /* malloc, free, abort, qsort*/
+#include <stdlib.h>   /* malloc, free, abort */
 #include <stdio.h>    /* fprintf */
 #include <limits.h>   /* UINT_MAX */
 #include <assert.h>   /* assert */
@@ -39,15 +39,12 @@
 #define BLOCKSIZE_DEFAULT 0  /* no slicing into blocks */
 #define DICTSIZE  (4 KB)
 #define CLEVEL_DEFAULT 3
-#define DICT_LOAD_METHOD ZSTD_dlm_byCopy
 
 #define BENCH_TIME_DEFAULT_S   6
 #define RUN_TIME_DEFAULT_MS    1000
 #define BENCH_TIME_DEFAULT_MS (BENCH_TIME_DEFAULT_S * RUN_TIME_DEFAULT_MS)
 
-#ifndef ZSTD_DISPLAY_LEVEL_DEFAULT
-# define ZSTD_DISPLAY_LEVEL_DEFAULT 3
-#endif
+#define DISPLAY_LEVEL_DEFAULT 3
 
 #define BENCH_SIZE_MAX (1200 MB)
 
@@ -63,7 +60,7 @@
 
 #define DISPLAY(...)         fprintf(stdout, __VA_ARGS__)
 #define DISPLAYLEVEL(l, ...) { if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } }
-static int g_displayLevel = ZSTD_DISPLAY_LEVEL_DEFAULT;   /* 0 : no display,  1: errors,  2 : + result + interaction + warnings,  3 : + progression,  4 : + information */
+static int g_displayLevel = DISPLAY_LEVEL_DEFAULT;   /* 0 : no display,  1: errors,  2 : + result + interaction + warnings,  3 : + progression,  4 : + information */
 
 
 /*---  buffer_t  ---*/
@@ -159,6 +156,19 @@ createDictionaryBuffer(const char* dictionaryName,
     }
 }
 
+static ZSTD_CDict* createCDictForDedicatedDictSearch(const void* dict, size_t dictSize, int compressionLevel)
+{
+    ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+    ZSTD_CCtxParams_init(params, compressionLevel);
+    ZSTD_CCtxParams_setParameter(params, ZSTD_c_enableDedicatedDictSearch, 1);
+    ZSTD_CCtxParams_setParameter(params, ZSTD_c_compressionLevel, compressionLevel);
+
+    ZSTD_CDict* cdict = ZSTD_createCDict_advanced2(dict, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto, params, ZSTD_defaultCMem);
+
+    ZSTD_freeCCtxParams(params);
+    return cdict;
+}
+
 /*! BMK_loadFiles() :
  *  Loads `buffer`, with content from files listed within `fileNamesTable`.
  *  Fills `buffer` entirely.
@@ -451,12 +461,14 @@ static void freeCDictCollection(cdict_collection_t cdictc)
 }
 
 /* returns .buffers=NULL if operation fails */
-static cdict_collection_t createCDictCollection(const void* dictBuffer, size_t dictSize, size_t nbCDict, ZSTD_dictContentType_e dictContentType, ZSTD_CCtx_params* cctxParams)
+static cdict_collection_t createCDictCollection(const void* dictBuffer, size_t dictSize, size_t nbCDict, int cLevel, int dedicatedDictSearch)
 {
     ZSTD_CDict** const cdicts = malloc(nbCDict * sizeof(ZSTD_CDict*));
     if (cdicts==NULL) return kNullCDictCollection;
     for (size_t dictNb=0; dictNb < nbCDict; dictNb++) {
-        cdicts[dictNb] = ZSTD_createCDict_advanced2(dictBuffer, dictSize, DICT_LOAD_METHOD, dictContentType, cctxParams, ZSTD_defaultCMem);
+        cdicts[dictNb] = dedicatedDictSearch ?
+            createCDictForDedicatedDictSearch(dictBuffer, dictSize, cLevel) :
+            ZSTD_createCDict(dictBuffer, dictSize, cLevel);
         CONTROL(cdicts[dictNb] != NULL);
     }
     cdict_collection_t cdictc;
@@ -579,13 +591,11 @@ typedef struct {
     cdict_collection_t dictionaries;
 } compressInstructions;
 
-compressInstructions createCompressInstructions(cdict_collection_t dictionaries, ZSTD_CCtx_params* cctxParams)
+compressInstructions createCompressInstructions(cdict_collection_t dictionaries)
 {
     compressInstructions ci;
     ci.cctx = ZSTD_createCCtx();
     CONTROL(ci.cctx != NULL);
-    if (cctxParams)
-      ZSTD_CCtx_setParametersUsingCCtxParams(ci.cctx, cctxParams);
     ci.nbDicts = dictionaries.nbCDict;
     ci.dictNb = 0;
     ci.dictionaries = dictionaries;
@@ -626,10 +636,10 @@ size_t compress(const void* src, size_t srcSize, void* dst, size_t dstCapacity,
     compressInstructions* const ci = (compressInstructions*) payload;
     (void)dstCapacity;
 
-    ZSTD_CCtx_refCDict(ci->cctx, ci->dictionaries.cdicts[ci->dictNb]);
-    ZSTD_compress2(ci->cctx,
-            dst, srcSize,
-            src, srcSize);
+    ZSTD_compress_usingCDict(ci->cctx,
+                    dst, srcSize,
+                    src, srcSize,
+                    ci->dictionaries.cdicts[ci->dictNb]);
 
     ci->dictNb = ci->dictNb + 1;
     if (ci->dictNb >= ci->nbDicts) ci->dictNb = 0;
@@ -653,55 +663,25 @@ size_t decompress(const void* src, size_t srcSize, void* dst, size_t dstCapacity
     return result;
 }
 
-typedef enum {
-  fastest = 0,
-  median = 1,
-} metricAggregatePref_e;
 
-/* compareFunction() :
- * Sort input in decreasing order when used with qsort() */
-int compareFunction(const void *a, const void *b)
-{
-  double x = *(const double *)a;
-  double y = *(const double *)b;
-  if (x < y)
-    return 1;
-  else if (x > y)
-    return -1;
-  return 0;
-}
-
-double aggregateData(double *data, size_t size,
-                     metricAggregatePref_e metricAggregatePref)
-{
-  qsort(data, size, sizeof(*data), compareFunction);
-  if (metricAggregatePref == fastest)
-    return data[0];
-  else /* median */
-    return (data[(size - 1) / 2] + data[size / 2]) / 2;
-}
-
-static int benchMem(slice_collection_t dstBlocks, slice_collection_t srcBlocks,
+static int benchMem(slice_collection_t dstBlocks,
+                    slice_collection_t srcBlocks,
                     ddict_collection_t ddictionaries,
-                    cdict_collection_t cdictionaries, unsigned nbRounds,
-                    int benchCompression, const char *exeName,
-                    ZSTD_CCtx_params *cctxParams,
-                    metricAggregatePref_e metricAggregatePref)
+                    cdict_collection_t cdictionaries,
+                    unsigned nbRounds, int benchCompression)
 {
     assert(dstBlocks.nbSlices == srcBlocks.nbSlices);
-    if (benchCompression) assert(cctxParams);
 
     unsigned const ms_per_round = RUN_TIME_DEFAULT_MS;
     unsigned const total_time_ms = nbRounds * ms_per_round;
 
-    double *const speedPerRound = (double *)malloc(nbRounds * sizeof(double));
+    double bestSpeed = 0.;
 
     BMK_timedFnState_t* const benchState =
             BMK_createTimedFnState(total_time_ms, ms_per_round);
 
     decompressInstructions di = createDecompressInstructions(ddictionaries);
-    compressInstructions ci =
-        createCompressInstructions(cdictionaries, cctxParams);
+    compressInstructions ci = createCompressInstructions(cdictionaries);
     void* payload = benchCompression ? (void*)&ci : (void*)&di;
     BMK_benchParams_t const bp = {
         .benchFn = benchCompression ? compress : decompress,
@@ -717,7 +697,6 @@ static int benchMem(slice_collection_t dstBlocks, slice_collection_t srcBlocks,
         .blockResults = NULL
     };
 
-    size_t roundNb = 0;
     for (;;) {
         BMK_runOutcome_t const outcome = BMK_benchTimedFn(benchState, bp);
         CONTROL(BMK_isSuccessful_runOutcome(outcome));
@@ -727,59 +706,16 @@ static int benchMem(slice_collection_t dstBlocks, slice_collection_t srcBlocks,
         double const dTime_sec = (double)dTime_ns / 1000000000;
         size_t const srcSize = result.sumOfReturn;
         double const speed_MBps = (double)srcSize / dTime_sec / (1 MB);
-        speedPerRound[roundNb] = speed_MBps;
+        if (speed_MBps > bestSpeed) bestSpeed = speed_MBps;
         if (benchCompression)
-            DISPLAY("Compression Speed : %.1f MB/s \r", speed_MBps);
+            DISPLAY("Compression Speed : %.1f MB/s \r", bestSpeed);
         else
-            DISPLAY("Decompression Speed : %.1f MB/s \r", speed_MBps);
+            DISPLAY("Decompression Speed : %.1f MB/s \r", bestSpeed);
 
         fflush(stdout);
         if (BMK_isCompleted_TimedFn(benchState)) break;
-        roundNb++;
     }
     DISPLAY("\n");
-    /* BMK_benchTimedFn may not run exactly nbRounds iterations */
-    double speedAggregated =
-        aggregateData(speedPerRound, roundNb + 1, metricAggregatePref);
-    free(speedPerRound);
-    
-    if (metricAggregatePref == fastest)
-      DISPLAY("Fastest Speed : %.1f MB/s \n", speedAggregated);
-    else
-      DISPLAY("Median Speed : %.1f MB/s \n", speedAggregated);
-
-    char* csvFileName = malloc(strlen(exeName) + 5);
-    strcpy(csvFileName, exeName);
-    strcat(csvFileName, ".csv");
-    FILE* csvFile = fopen(csvFileName, "r");
-    if (!csvFile) {
-        csvFile = fopen(csvFileName, "wt");
-        assert(csvFile);
-        fprintf(csvFile, "%s\n", exeName);
-        /* Print table headers */
-        fprintf(
-            csvFile,
-            "Compression/Decompression,Level,nbDicts,dictAttachPref,metricAggregatePref,Speed\n");
-    } else {
-        fclose(csvFile);
-        csvFile = fopen(csvFileName, "at");
-        assert(csvFile);
-    }
-
-    int cLevel = -1;
-    int dictAttachPref = -1;
-    if (benchCompression) {
-      ZSTD_CCtxParams_getParameter(cctxParams, ZSTD_c_compressionLevel,
-                                   &cLevel);
-      ZSTD_CCtxParams_getParameter(cctxParams, ZSTD_c_forceAttachDict,
-                                   &dictAttachPref);
-    }
-    fprintf(csvFile, "%s,%d,%ld,%d,%d,%.1f\n",
-            benchCompression ? "Compression" : "Decompression", cLevel,
-            benchCompression ? ci.nbDicts : di.nbDicts, dictAttachPref,
-            metricAggregatePref, speedAggregated);
-    fclose(csvFile);
-    free(csvFileName);
 
     freeDecompressInstructions(di);
     freeCompressInstructions(ci);
@@ -794,11 +730,12 @@ static int benchMem(slice_collection_t dstBlocks, slice_collection_t srcBlocks,
  *  dictionary : optional (can be NULL), file to load as dictionary,
  *              if none provided : will be calculated on the fly by the program.
  * @return : 0 is success, 1+ otherwise */
-int bench(const char **fileNameTable, unsigned nbFiles, const char *dictionary,
-          size_t blockSize, int clevel, unsigned nbDictMax, unsigned nbBlocks,
+int bench(const char** fileNameTable, unsigned nbFiles,
+          const char* dictionary,
+          size_t blockSize, int clevel,
+          unsigned nbDictMax, unsigned nbBlocks,
           unsigned nbRounds, int benchCompression,
-          ZSTD_dictContentType_e dictContentType, ZSTD_CCtx_params *cctxParams,
-          const char *exeName, metricAggregatePref_e metricAggregatePref)
+          int dedicatedDictSearch)
 {
     int result = 0;
 
@@ -849,18 +786,20 @@ int bench(const char **fileNameTable, unsigned nbFiles, const char *dictionary,
     /* dictionary determination */
     buffer_t const dictBuffer = createDictionaryBuffer(dictionary,
                                 srcs.buffer.ptr,
-                                srcSlices.capacities, srcSlices.nbSlices,
+                                srcs.slices.capacities, srcs.slices.nbSlices,
                                 DICTSIZE);
     CONTROL(dictBuffer.ptr != NULL);
 
-    ZSTD_CDict* const cdict = ZSTD_createCDict_advanced2(dictBuffer.ptr, dictBuffer.size, DICT_LOAD_METHOD, dictContentType, cctxParams, ZSTD_defaultCMem);
+    ZSTD_CDict* const cdict = dedicatedDictSearch ?
+        createCDictForDedicatedDictSearch(dictBuffer.ptr, dictBuffer.size, clevel) :
+        ZSTD_createCDict(dictBuffer.ptr, dictBuffer.size, clevel);
     CONTROL(cdict != NULL);
 
     size_t const cTotalSizeNoDict = compressBlocks(NULL, dstSlices, srcSlices, NULL, clevel);
     CONTROL(cTotalSizeNoDict != 0);
     DISPLAYLEVEL(3, "compressing at level %u without dictionary : Ratio=%.2f  (%u bytes) \n",
                     clevel,
-                    (double)totalSrcSlicesSize / (double)cTotalSizeNoDict, (unsigned)cTotalSizeNoDict);
+                    (double)totalSrcSlicesSize / cTotalSizeNoDict, (unsigned)cTotalSizeNoDict);
 
     size_t* const cSizes = malloc(nbBlocks * sizeof(size_t));
     CONTROL(cSizes != NULL);
@@ -869,21 +808,21 @@ int bench(const char **fileNameTable, unsigned nbFiles, const char *dictionary,
     CONTROL(cTotalSize != 0);
     DISPLAYLEVEL(3, "compressed using a %u bytes dictionary : Ratio=%.2f  (%u bytes) \n",
                     (unsigned)dictBuffer.size,
-                    (double)totalSrcSlicesSize / (double)cTotalSize, (unsigned)cTotalSize);
+                    (double)totalSrcSlicesSize / cTotalSize, (unsigned)cTotalSize);
 
     /* now dstSlices contain the real compressed size of each block, instead of the maximum capacity */
     shrinkSizes(dstSlices, cSizes);
 
     unsigned const nbDicts = nbDictMax ? nbDictMax : nbBlocks;
 
-    cdict_collection_t const cdictionaries = createCDictCollection(dictBuffer.ptr, dictBuffer.size, nbDicts, dictContentType, cctxParams);
+    cdict_collection_t const cdictionaries = createCDictCollection(dictBuffer.ptr, dictBuffer.size, nbDicts, clevel, dedicatedDictSearch);
     CONTROL(cdictionaries.cdicts != NULL);
 
     ddict_collection_t const ddictionaries = createDDictCollection(dictBuffer.ptr, dictBuffer.size, nbDicts);
     CONTROL(ddictionaries.ddicts != NULL);
 
     if (benchCompression) {
-        size_t const dictMem = ZSTD_sizeof_CDict(cdictionaries.cdicts[0]);
+        size_t const dictMem = ZSTD_estimateCDictSize(dictBuffer.size, ZSTD_dlm_byCopy);
         size_t const allDictMem = dictMem * nbDicts;
         DISPLAYLEVEL(3, "generating %u dictionaries, using %.1f MB of memory \n",
                         nbDicts, (double)allDictMem / (1 MB));
@@ -893,13 +832,11 @@ int bench(const char **fileNameTable, unsigned nbFiles, const char *dictionary,
         buffer_collection_t resultCollection = createBufferCollection_fromSliceCollection(srcSlices);
         CONTROL(resultCollection.buffer.ptr != NULL);
 
-        result = benchMem(dstSlices, resultCollection.slices, ddictionaries,
-                          cdictionaries, nbRounds, benchCompression, exeName,
-                          cctxParams, metricAggregatePref);
+        result = benchMem(dstSlices, resultCollection.slices, ddictionaries, cdictionaries, nbRounds, benchCompression);
 
         freeBufferCollection(resultCollection);
     } else {
-        size_t const dictMem = ZSTD_estimateDDictSize(dictBuffer.size, DICT_LOAD_METHOD);
+        size_t const dictMem = ZSTD_estimateDDictSize(dictBuffer.size, ZSTD_dlm_byCopy);
         size_t const allDictMem = dictMem * nbDicts;
         DISPLAYLEVEL(3, "generating %u dictionaries, using %.1f MB of memory \n",
                         nbDicts, (double)allDictMem / (1 MB));
@@ -909,9 +846,7 @@ int bench(const char **fileNameTable, unsigned nbFiles, const char *dictionary,
         buffer_collection_t resultCollection = createBufferCollection_fromSliceCollectionSizes(srcSlices);
         CONTROL(resultCollection.buffer.ptr != NULL);
 
-        result = benchMem(resultCollection.slices, dstSlices, ddictionaries,
-                          cdictionaries, nbRounds, benchCompression, exeName,
-                          NULL, metricAggregatePref);
+        result = benchMem(resultCollection.slices, dstSlices, ddictionaries, cdictionaries, nbRounds, benchCompression);
 
         freeBufferCollection(resultCollection);
     }
@@ -989,15 +924,9 @@ int usage(const char* exeName)
     DISPLAY ("-#          : use compression level # (default: %u) \n", CLEVEL_DEFAULT);
     DISPLAY ("-D #        : use # as a dictionary (default: create one) \n");
     DISPLAY ("-i#         : nb benchmark rounds (default: %u) \n", BENCH_TIME_DEFAULT_S);
-    DISPLAY ("-p#         : print speed for all rounds 0=fastest 1=median (default: 0) \n");
     DISPLAY ("--nbBlocks=#: use # blocks for bench (default: one per file) \n");
     DISPLAY ("--nbDicts=# : create # dictionaries for bench (default: one per block) \n");
     DISPLAY ("-h          : help (this text) \n");
-    DISPLAY (" \n");
-    DISPLAY ("Advanced Options (see zstd.h for documentation) : \n");
-    DISPLAY ("--dedicated-dict-search\n");
-    DISPLAY ("--dict-content-type=#\n");
-    DISPLAY ("--dict-attach-pref=#\n");
     return 0;
 }
 
@@ -1027,10 +956,6 @@ int main (int argc, const char** argv)
     size_t blockSize = BLOCKSIZE_DEFAULT;
     unsigned nbDicts = 0;  /* determine nbDicts automatically: 1 dictionary per block */
     unsigned nbBlocks = 0; /* determine nbBlocks automatically, from source and blockSize */
-    ZSTD_dictContentType_e dictContentType = ZSTD_dct_auto;
-    ZSTD_dictAttachPref_e dictAttachPref = ZSTD_dictDefaultAttach;
-    ZSTD_ParamSwitch_e prefetchCDictTables = ZSTD_ps_auto;
-    metricAggregatePref_e metricAggregatePref = fastest;
 
     for (int argNb = 1; argNb < argc ; argNb++) {
         const char* argument = argv[argNb];
@@ -1040,7 +965,6 @@ int main (int argc, const char** argv)
         if (!strcmp(argument, "-r")) { recursiveMode = 1; continue; }
         if (!strcmp(argument, "-D")) { argNb++; assert(argNb < argc); dictionary = argv[argNb]; continue; }
         if (longCommandWArg(&argument, "-i")) { nbRounds = readU32FromChar(&argument); continue; }
-        if (longCommandWArg(&argument, "-p")) { metricAggregatePref = (int)readU32FromChar(&argument); continue;}
         if (longCommandWArg(&argument, "--dictionary=")) { dictionary = argument; continue; }
         if (longCommandWArg(&argument, "-B")) { blockSize = readU32FromChar(&argument); continue; }
         if (longCommandWArg(&argument, "--blockSize=")) { blockSize = readU32FromChar(&argument); continue; }
@@ -1048,9 +972,6 @@ int main (int argc, const char** argv)
         if (longCommandWArg(&argument, "--nbBlocks=")) { nbBlocks = readU32FromChar(&argument); continue; }
         if (longCommandWArg(&argument, "--clevel=")) { cLevel = (int)readU32FromChar(&argument); continue; }
         if (longCommandWArg(&argument, "--dedicated-dict-search")) { dedicatedDictSearch = 1; continue; }
-        if (longCommandWArg(&argument, "--dict-content-type=")) { dictContentType = (int)readU32FromChar(&argument); continue; }
-        if (longCommandWArg(&argument, "--dict-attach-pref=")) { dictAttachPref = (int)readU32FromChar(&argument); continue; }
-        if (longCommandWArg(&argument, "--prefetch-cdict-tables=")) { prefetchCDictTables = (int)readU32FromChar(&argument); continue; }
         if (longCommandWArg(&argument, "-")) { cLevel = (int)readU32FromChar(&argument); continue; }
         /* anything that's not a command is a filename */
         nameTable[nameIdx++] = argument;
@@ -1068,22 +989,10 @@ int main (int argc, const char** argv)
         nameTable = NULL;  /* UTIL_createFileNamesTable() takes ownership of nameTable */
     }
 
-    ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
-    ZSTD_CCtxParams_init(cctxParams, cLevel);
-    ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_enableDedicatedDictSearch, dedicatedDictSearch);
-    ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_nbWorkers, 0);
-    ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_forceAttachDict, dictAttachPref);
-    ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_prefetchCDictTables, prefetchCDictTables);
-
-    int result =
-        bench(filenameTable->fileNames, (unsigned)filenameTable->tableSize,
-              dictionary, blockSize, cLevel, nbDicts, nbBlocks, nbRounds,
-              benchCompression, dictContentType, cctxParams, exeName,
-              metricAggregatePref);
+    int result = bench(filenameTable->fileNames, (unsigned)filenameTable->tableSize, dictionary, blockSize, cLevel, nbDicts, nbBlocks, nbRounds, benchCompression, dedicatedDictSearch);
 
     UTIL_freeFileNamesTable(filenameTable);
     free(nameTable);
-    ZSTD_freeCCtxParams(cctxParams);
 
     return result;
 }

contrib/linux-kernel/Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -26,13 +26,14 @@ libzstd:
 		--rewrite-include '"(\.\./)?zstd_errors.h"=<linux/zstd_errors.h>' \
 		--sed 's,/\*\*\*,/* *,g' \
 		--sed 's,/\*\*,/*,g' \
-		--spdx \
 		-DZSTD_NO_INTRINSICS \
 		-DZSTD_NO_UNUSED_FUNCTIONS \
 		-DZSTD_LEGACY_SUPPORT=0 \
 		-DZSTD_STATIC_LINKING_ONLY \
 		-DFSE_STATIC_LINKING_ONLY \
+		-DHUF_STATIC_LINKING_ONLY \
 		-DXXH_STATIC_LINKING_ONLY \
+		-DMEM_FORCE_MEMORY_ACCESS=0 \
 		-D__GNUC__ \
 		-D__linux__=1 \
 		-DSTATIC_BMI2=0 \
@@ -48,19 +49,16 @@ libzstd:
 		-UZSTD_MULTITHREAD \
 		-U_MSC_VER \
 		-U_WIN32 \
-		-RZSTDLIB_VISIBLE= \
-		-RZSTDERRORLIB_VISIBLE= \
+		-RZSTDLIB_VISIBILITY= \
+		-RZSTDERRORLIB_VISIBILITY= \
 		-RZSTD_FALLTHROUGH=fallthrough \
 		-DZSTD_HAVE_WEAK_SYMBOLS=0 \
 		-DZSTD_TRACE=0 \
 		-DZSTD_NO_TRACE \
-		-DZSTD_DISABLE_ASM \
 		-DZSTD_LINUX_KERNEL
-	rm linux/lib/zstd/decompress/huf_decompress_amd64.S
 	mv linux/lib/zstd/zstd.h linux/include/linux/zstd_lib.h
 	mv linux/lib/zstd/zstd_errors.h linux/include/linux/
 	cp linux_zstd.h linux/include/linux/zstd.h
-	cp zstd_common_module.c linux/lib/zstd
 	cp zstd_compress_module.c linux/lib/zstd
 	cp zstd_decompress_module.c linux/lib/zstd
 	cp decompress_sources.h linux/lib/zstd
@@ -104,5 +102,4 @@ test: libzstd
 
 .PHONY: clean
 clean:
-	$(RM) -rf linux
-	$(MAKE) -C test clean
+	$(RM) -rf linux test/test test/static_test

contrib/linux-kernel/decompress_sources.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/linux.mk

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -10,10 +10,16 @@
 # ################################################################
 obj-$(CONFIG_ZSTD_COMPRESS) += zstd_compress.o
 obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd_decompress.o
-obj-$(CONFIG_ZSTD_COMMON) += zstd_common.o
+
+ccflags-y += -Wno-error=deprecated-declarations
 
 zstd_compress-y := \
 		zstd_compress_module.o \
+		common/debug.o \
+		common/entropy_common.o \
+		common/error_private.o \
+		common/fse_decompress.o \
+		common/zstd_common.o \
 		compress/fse_compress.o \
 		compress/hist.o \
 		compress/huf_compress.o \
@@ -26,19 +32,16 @@ zstd_compress-y := \
 		compress/zstd_lazy.o \
 		compress/zstd_ldm.o \
 		compress/zstd_opt.o \
-		compress/zstd_preSplit.o \
 
 zstd_decompress-y := \
 		zstd_decompress_module.o \
-		decompress/huf_decompress.o \
-		decompress/zstd_ddict.o \
-		decompress/zstd_decompress.o \
-		decompress/zstd_decompress_block.o \
-
-zstd_common-y := \
-		zstd_common_module.o \
 		common/debug.o \
 		common/entropy_common.o \
 		common/error_private.o \
 		common/fse_decompress.o \
 		common/zstd_common.o \
+		decompress/huf_decompress.o \
+		decompress/huf_decompress_amd64.o \
+		decompress/zstd_ddict.o \
+		decompress/zstd_decompress.o \
+		decompress/zstd_decompress_block.o \

contrib/linux-kernel/linux_zstd.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -77,30 +77,6 @@ int zstd_min_clevel(void);
  */
 int zstd_max_clevel(void);
 
-/**
- * zstd_default_clevel() - default compression level
- *
- * Return: Default compression level.
- */
-int zstd_default_clevel(void);
-
-/**
- * struct zstd_custom_mem - custom memory allocation
- */
-typedef ZSTD_customMem zstd_custom_mem;
-
-/**
- * struct zstd_dict_load_method - Dictionary load method.
- * See zstd_lib.h.
- */
-typedef ZSTD_dictLoadMethod_e zstd_dict_load_method;
-
-/**
- * struct zstd_dict_content_type - Dictionary context type.
- * See zstd_lib.h.
- */
-typedef ZSTD_dictContentType_e zstd_dict_content_type;
-
 /* ======   Parameter Selection   ====== */
 
 /**
@@ -160,32 +136,9 @@ typedef ZSTD_parameters zstd_parameters;
 zstd_parameters zstd_get_params(int level,
 	unsigned long long estimated_src_size);
 
-/**
- * zstd_get_cparams() - returns zstd_compression_parameters for selected level
- * @level:              The compression level
- * @estimated_src_size: The estimated source size to compress or 0
- *                      if unknown.
- * @dict_size:          Dictionary size.
- *
- * Return:              The selected zstd_compression_parameters.
- */
-zstd_compression_parameters zstd_get_cparams(int level,
-	unsigned long long estimated_src_size, size_t dict_size);
+/* ======   Single-pass Compression   ====== */
 
 typedef ZSTD_CCtx zstd_cctx;
-typedef ZSTD_cParameter zstd_cparameter;
-
-/**
- * zstd_cctx_set_param() - sets a compression parameter
- * @cctx:         The context. Must have been initialized with zstd_init_cctx().
- * @param:        The parameter to set.
- * @value:        The value to set the parameter to.
- *
- * Return:        Zero or an error, which can be checked using zstd_is_error().
- */
-size_t zstd_cctx_set_param(zstd_cctx *cctx, zstd_cparameter param, int value);
-
-/* ======   Single-pass Compression   ====== */
 
 /**
  * zstd_cctx_workspace_bound() - max memory needed to initialize a zstd_cctx
@@ -200,20 +153,6 @@ size_t zstd_cctx_set_param(zstd_cctx *cctx, zstd_cparameter param, int value);
  */
 size_t zstd_cctx_workspace_bound(const zstd_compression_parameters *parameters);
 
-/**
- * zstd_cctx_workspace_bound_with_ext_seq_prod() - max memory needed to
- * initialize a zstd_cctx when using the block-level external sequence
- * producer API.
- * @parameters: The compression parameters to be used.
- *
- * If multiple compression parameters might be used, the caller must call
- * this function for each set of parameters and use the maximum size.
- *
- * Return:      A lower bound on the size of the workspace that is passed to
- *              zstd_init_cctx().
- */
-size_t zstd_cctx_workspace_bound_with_ext_seq_prod(const zstd_compression_parameters *parameters);
-
 /**
  * zstd_init_cctx() - initialize a zstd compression context
  * @workspace:      The workspace to emplace the context into. It must outlive
@@ -241,71 +180,6 @@ zstd_cctx *zstd_init_cctx(void *workspace, size_t workspace_size);
 size_t zstd_compress_cctx(zstd_cctx *cctx, void *dst, size_t dst_capacity,
 	const void *src, size_t src_size, const zstd_parameters *parameters);
 
-/**
- * zstd_create_cctx_advanced() - Create compression context
- * @custom_mem:   Custom allocator.
- *
- * Return:        NULL on error, pointer to compression context otherwise.
- */
-zstd_cctx *zstd_create_cctx_advanced(zstd_custom_mem custom_mem);
-
-/**
- * zstd_free_cctx() - Free compression context
- * @cdict:        Pointer to compression context.
- *
- * Return:        Always 0.
- */
-size_t zstd_free_cctx(zstd_cctx* cctx);
-
-/**
- * struct zstd_cdict - Compression dictionary.
- * See zstd_lib.h.
- */
-typedef ZSTD_CDict zstd_cdict;
-
-/**
- * zstd_create_cdict_byreference() - Create compression dictionary
- * @dict:              Pointer to dictionary buffer.
- * @dict_size:         Size of the dictionary buffer.
- * @dict_load_method:  Dictionary load method.
- * @dict_content_type: Dictionary content type.
- * @custom_mem:        Memory allocator.
- *
- * Note, this uses @dict by reference (ZSTD_dlm_byRef), so it should be
- * free before zstd_cdict is destroyed.
- *
- * Return:             NULL on error, pointer to compression dictionary
- *                     otherwise.
- */
-zstd_cdict *zstd_create_cdict_byreference(const void *dict, size_t dict_size,
-					  zstd_compression_parameters cparams,
-					  zstd_custom_mem custom_mem);
-
-/**
- * zstd_free_cdict() - Free compression dictionary
- * @cdict:        Pointer to compression dictionary.
- *
- * Return:        Always 0.
- */
-size_t zstd_free_cdict(zstd_cdict* cdict);
-
-/**
- * zstd_compress_using_cdict() - compress src into dst using a dictionary
- * @cctx:         The context. Must have been initialized with zstd_init_cctx().
- * @dst:          The buffer to compress src into.
- * @dst_capacity: The size of the destination buffer. May be any size, but
- *                ZSTD_compressBound(srcSize) is guaranteed to be large enough.
- * @src:          The data to compress.
- * @src_size:     The size of the data to compress.
- * @cdict:        The dictionary to be used.
- *
- * Return:        The compressed size or an error, which can be checked using
- *                zstd_is_error().
- */
-size_t zstd_compress_using_cdict(zstd_cctx *cctx, void *dst,
-	size_t dst_capacity, const void *src, size_t src_size,
-	const zstd_cdict *cdict);
-
 /* ======   Single-pass Decompression   ====== */
 
 typedef ZSTD_DCtx zstd_dctx;
@@ -346,71 +220,6 @@ zstd_dctx *zstd_init_dctx(void *workspace, size_t workspace_size);
 size_t zstd_decompress_dctx(zstd_dctx *dctx, void *dst, size_t dst_capacity,
 	const void *src, size_t src_size);
 
-/**
- * struct zstd_ddict - Decompression dictionary.
- * See zstd_lib.h.
- */
-typedef ZSTD_DDict zstd_ddict;
-
-/**
- * zstd_create_ddict_byreference() - Create decompression dictionary
- * @dict:              Pointer to dictionary buffer.
- * @dict_size:         Size of the dictionary buffer.
- * @dict_load_method:  Dictionary load method.
- * @dict_content_type: Dictionary content type.
- * @custom_mem:        Memory allocator.
- *
- * Note, this uses @dict by reference (ZSTD_dlm_byRef), so it should be
- * free before zstd_ddict is destroyed.
- *
- * Return:             NULL on error, pointer to decompression dictionary
- *                     otherwise.
- */
-zstd_ddict *zstd_create_ddict_byreference(const void *dict, size_t dict_size,
-					  zstd_custom_mem custom_mem);
-/**
- * zstd_free_ddict() - Free decompression dictionary
- * @dict:         Pointer to the dictionary.
- *
- * Return:        Always 0.
- */
-size_t zstd_free_ddict(zstd_ddict *ddict);
-
-/**
- * zstd_create_dctx_advanced() - Create decompression context
- * @custom_mem:   Custom allocator.
- *
- * Return:        NULL on error, pointer to decompression context otherwise.
- */
-zstd_dctx *zstd_create_dctx_advanced(zstd_custom_mem custom_mem);
-
-/**
- * zstd_free_dctx() -- Free decompression context
- * @dctx:         Pointer to decompression context.
- * Return:        Always 0.
- */
-size_t zstd_free_dctx(zstd_dctx *dctx);
-
-/**
- * zstd_decompress_using_ddict() - decompress src into dst using a dictionary
- * @dctx:         The decompression context.
- * @dst:          The buffer to decompress src into.
- * @dst_capacity: The size of the destination buffer. Must be at least as large
- *                as the decompressed size. If the caller cannot upper bound the
- *                decompressed size, then it's better to use the streaming API.
- * @src:          The zstd compressed data to decompress. Multiple concatenated
- *                frames and skippable frames are allowed.
- * @src_size:     The exact size of the data to decompress.
- * @ddict:        The dictionary to be used.
- *
- * Return:        The decompressed size or an error, which can be checked using
- *                zstd_is_error().
- */
-size_t zstd_decompress_using_ddict(zstd_dctx *dctx,
-	void *dst, size_t dst_capacity, const void *src, size_t src_size,
-	const zstd_ddict *ddict);
-
-
 /* ======   Streaming Buffers   ====== */
 
 /**
@@ -448,16 +257,6 @@ typedef ZSTD_CStream zstd_cstream;
  */
 size_t zstd_cstream_workspace_bound(const zstd_compression_parameters *cparams);
 
-/**
- * zstd_cstream_workspace_bound_with_ext_seq_prod() - memory needed to initialize
- * a zstd_cstream when using the block-level external sequence producer API.
- * @cparams: The compression parameters to be used for compression.
- *
- * Return:   A lower bound on the size of the workspace that is passed to
- *           zstd_init_cstream().
- */
-size_t zstd_cstream_workspace_bound_with_ext_seq_prod(const zstd_compression_parameters *cparams);
-
 /**
  * zstd_init_cstream() - initialize a zstd streaming compression context
  * @parameters        The zstd parameters to use for compression.
@@ -617,18 +416,6 @@ size_t zstd_decompress_stream(zstd_dstream *dstream, zstd_out_buffer *output,
  */
 size_t zstd_find_frame_compressed_size(const void *src, size_t src_size);
 
-/**
- * zstd_register_sequence_producer() - exposes the zstd library function
- * ZSTD_registerSequenceProducer(). This is used for the block-level external
- * sequence producer API. See upstream zstd.h for detailed documentation.
- */
-typedef ZSTD_sequenceProducer_F zstd_sequence_producer_f;
-void zstd_register_sequence_producer(
-  zstd_cctx *cctx,
-  void* sequence_producer_state,
-  zstd_sequence_producer_f sequence_producer
-);
-
 /**
  * struct zstd_frame_params - zstd frame parameters stored in the frame header
  * @frameContentSize: The frame content size, or ZSTD_CONTENTSIZE_UNKNOWN if not
@@ -642,7 +429,7 @@ void zstd_register_sequence_producer(
  *
  * See zstd_lib.h.
  */
-typedef ZSTD_FrameHeader zstd_frame_header;
+typedef ZSTD_frameHeader zstd_frame_header;
 
 /**
  * zstd_get_frame_header() - extracts parameters from a zstd or skippable frame
@@ -657,35 +444,4 @@ typedef ZSTD_FrameHeader zstd_frame_header;
 size_t zstd_get_frame_header(zstd_frame_header *params, const void *src,
 	size_t src_size);
 
-/**
- * struct zstd_sequence - a sequence of literals or a match
- *
- * @offset: The offset of the match
- * @litLength: The literal length of the sequence
- * @matchLength: The match length of the sequence
- * @rep: Represents which repeat offset is used
- */
-typedef ZSTD_Sequence zstd_sequence;
-
-/**
- * zstd_compress_sequences_and_literals() - compress an array of zstd_sequence and literals
- *
- * @cctx: The zstd compression context.
- * @dst: The buffer to compress the data into.
- * @dst_capacity: The size of the destination buffer.
- * @in_seqs: The array of zstd_sequence to compress.
- * @in_seqs_size: The number of sequences in in_seqs.
- * @literals: The literals associated to the sequences to be compressed.
- * @lit_size: The size of the literals in the literals buffer.
- * @lit_capacity: The size of the literals buffer.
- * @decompressed_size: The size of the input data
- *
- * Return: The compressed size or an error, which can be checked using
- * 	   zstd_is_error().
- */
-size_t zstd_compress_sequences_and_literals(zstd_cctx *cctx, void* dst, size_t dst_capacity,
-					    const zstd_sequence *in_seqs, size_t in_seqs_size,
-					    const void* literals, size_t lit_size, size_t lit_capacity,
-					    size_t decompressed_size);
-
 #endif  /* LINUX_ZSTD_H */

contrib/linux-kernel/mem.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -15,7 +15,7 @@
 /*-****************************************
 *  Dependencies
 ******************************************/
-#include <linux/unaligned.h>  /* get_unaligned, put_unaligned* */
+#include <asm/unaligned.h>  /* get_unaligned, put_unaligned* */
 #include <linux/compiler.h>  /* inline */
 #include <linux/swab.h>  /* swab32, swab64 */
 #include <linux/types.h>  /* size_t, ptrdiff_t */
@@ -24,7 +24,6 @@
 /*-****************************************
 *  Compiler specifics
 ******************************************/
-#undef MEM_STATIC /* may be already defined from common/compiler.h */
 #define MEM_STATIC static inline
 
 /*-**************************************************************

contrib/linux-kernel/test/Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) Meta Platforms, Inc. and affiliates.
+# Copyright (c) Facebook, Inc.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the
@@ -45,5 +45,4 @@ clean:
 	$(RM) -f $(LINUX_ZSTDLIB)/*.o
 	$(RM) -f $(LINUX_ZSTDLIB)/**/*.o
 	$(RM) -f *.o *.a
-	$(RM) -f static_test
 	$(RM) -f test

contrib/linux-kernel/test/include/linux/compiler.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-2021, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/errno.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-2021, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the