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https://github.com/Hamlib/Hamlib
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Credit to Ladislav Vaiz (OK1ZIA) for the original 2012 Android port. Signed-off-by: Gong BI1XJT <bi1xjt@rad1o.cn>
65 lines
2.1 KiB
Text
65 lines
2.1 KiB
Text
Android cross compilation
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=========================
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Android port was originally written by Ladislav Vaiz (OK1ZIA, 2012)
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using a standalone Android.mk build system with a custom ltdl/dl
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wrapper (since removed). The present autotools-based cross-compile
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instructions supersede that approach.
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Hamlib can be cross-compiled for Android using the NDK's standalone
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toolchains. API level 28 is the minimum supported version; the
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following example targets 64-bit ARM (aarch64) with API 28.
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Prerequisites
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-------------
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Install the Android NDK (e.g. via Android Studio's SDK Manager or
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`sdkmanager`). The examples below use NDK r28 at the default install
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location under `~/Android/Sdk/ndk/`.
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The host toolchain used is `linux-x86_64`; adjust for other host
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platforms (e.g. `darwin-x86_64` or `windows-x86_64`).
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USB support (libusb) is not currently available in the Android cross
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build, so `--without-libusb` is required.
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Build script example
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--------------------
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The following environment variables set up the NDK toolchain for a
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64-bit ARM target:
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export NDK=$HOME/Android/Sdk/ndk/28.0.12433566
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export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
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export TARGET=aarch64-linux-android
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export API=28
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export AR=$TOOLCHAIN/bin/llvm-ar
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export AS=$TOOLCHAIN/bin/llvm-as
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export CC=$TOOLCHAIN/bin/${TARGET}${API}-clang
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export CXX=$TOOLCHAIN/bin/${TARGET}${API}-clang++
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export LD=$TOOLCHAIN/bin/ld
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export RANLIB=$TOOLCHAIN/bin/llvm-ranlib
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export STRIP=$TOOLCHAIN/bin/llvm-strip
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./bootstrap
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./configure --host=$TARGET --without-libusb
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make
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To build for 32-bit ARM, use `TARGET=armv7a-linux-androideabi` instead
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(also with `API=28`).
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To build for x86-64 Android emulators, use `TARGET=x86_64-linux-android`.
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Notes
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-----
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- `./bootstrap` is only needed when building from a Git checkout, not
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from a release tarball.
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- The resulting binaries run on Android but must be deployed with the
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NDK's libc++_shared.so or linked statically.
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- Only the Hamlib C/C++ library is built; language bindings (Python, Perl,
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etc.) have not been tested in this configuration.
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