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x86-64: Compile huf_decompress_amd64.S with CMAKE_C_FLAGS

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Compile huf_decompress_amd64.S with CMAKE_C_FLAGS to support Intel CET:

1. Define ZSTD_CET_ENDBRANCH to endbr64 for IBT.
2. Add IBT and SHSTK markers to huf_decompress_amd64.S.o.

This fixes issue #4535.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
H.J. Lu 2026-06-16 10:38:37 +08:00
parent 5233c58e6c
commit c67e038c1d
1 changed files with 5 additions and 0 deletions
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5
build/cmake/lib/CMakeLists.txt
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@ -42,6 +42,11 @@ else ()
if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|AMD64.*|x86_64.*|X86_64.*" AND ${ZSTD_HAS_NOEXECSTACK})
enable_language(ASM)
set(DecompressSources ${DecompressSources} ${LIBRARY_DIR}/decompress/huf_decompress_amd64.S)
# Compile huf_decompress_amd64.S with CMAKE_C_FLAGS to support
# Intel CET:
# 1. Define ZSTD_CET_ENDBRANCH to endbr64 for IBT.
# 2. Add IBT and SHSTK markers to huf_decompress_amd64.S.o.
set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS}")
else()
add_compile_options(-DZSTD_DISABLE_ASM)
endif()