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https://libwebsockets.org/repo/libwebsockets
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59 lines
2.2 KiB
CMake
59 lines
2.2 KiB
CMake
#
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# CMake Toolchain file for crosscompiling Android / aarch64
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#
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# This can be used when running cmake in the following way:
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# cd build/
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# cmake .. -DCMAKE_TOOLCHAIN_FILE=contrib/cross-aarch64-android.cmake
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#
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set(ANDROID_API_VER 24)
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set(ABARCH1 arm64)
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set(CMAKE_SYSTEM_PROCESSOR aarch64)
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set(NDK /opt/android/ndk/21.1.6352462/)
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set(CROSS_SYSROOT "${NDK}/platforms/android-${ANDROID_API_VER}/arch-${ABARCH1}")
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set(BUILD_ARCH linux-x86_64)
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#
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# Rest should be computed from the above
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#
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set(TC_PATH ${NDK}/toolchains/llvm/prebuilt/${BUILD_ARCH})
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set(TC_BASE ${TC_PATH}/bin/${CMAKE_SYSTEM_PROCESSOR}-linux-android)
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set(PLATFORM android)
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set(CMAKE_SYSTEM_NAME Linux)
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set(CMAKE_C_COMPILER "${TC_BASE}${ANDROID_API_VER}-clang")
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set(CMAKE_CXX_COMPILER "${TC_BASE}${ANDROID_API_VER}-clang++")
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set(CMAKE_STAGING_PREFIX "${CROSS_SYSROOT}")
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#
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# Different build system distros set release optimization level to different
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# things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3
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# here. Actually the build system's local policy is completely unrelated to
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# our desire for cross-build release optimization policy for code built to run
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# on a completely different target than the build system itself.
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#
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# Since this goes last on the compiler commandline we have to override it to a
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# sane value for cross-build here. Notice some gcc versions enable broken
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# optimizations with -O3.
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#
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if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release)
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set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2")
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
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endif()
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#-nostdlib
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SET(CMAKE_C_FLAGS "-DGCC_VER=\"\\\"$(GCC_VER)\\\"\" -DARM64=1 -D__LP64__=1 -Os -g3 -fpie -mstrict-align -fPIC -ffunction-sections -fdata-sections -D__ANDROID_API__=${ANDROID_API_VER} -Wno-pointer-sign" CACHE STRING "" FORCE)
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set(CMAKE_FIND_ROOT_PATH "${CROSS_SYSROOT}")
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# Adjust the default behavior of the FIND_XXX() commands:
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# search programs in the host environment only.
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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# Search headers and libraries in the target environment only.
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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