101 lines
3.8 KiB
CMake
101 lines
3.8 KiB
CMake
# Copied from https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/examples/vcpkg_android_example_cmake_script/cmake/vcpkg_android.cmake
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#
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# vcpkg_android.cmake
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#
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# Helper script when using vcpkg with cmake. It should be triggered via the variable VCPKG_TARGET_ANDROID
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#
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# For example:
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# if (VCPKG_TARGET_ANDROID)
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# include("cmake/vcpkg_android.cmake")
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# endif()
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#
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# This script will:
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# 1 & 2. check the presence of needed env variables: ANDROID_NDK_HOME and VCPKG_ROOT
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# 3. set VCPKG_TARGET_TRIPLET according to ANDROID_ABI
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# 4. Combine vcpkg and Android toolchains by setting CMAKE_TOOLCHAIN_FILE
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# and VCPKG_CHAINLOAD_TOOLCHAIN_FILE
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# Note: VCPKG_TARGET_ANDROID is not an official vcpkg variable.
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# it is introduced for the need of this script
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if (VCPKG_TARGET_ANDROID)
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#
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# 1. Check the presence of environment variable ANDROID_NDK_HOME
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#
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if (NOT DEFINED ENV{ANDROID_NDK_HOME})
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message(FATAL_ERROR "
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Please set an environment variable ANDROID_NDK_HOME
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For example:
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export ANDROID_NDK_HOME=/home/your-account/Android/Sdk/ndk-bundle
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Or:
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export ANDROID_NDK_HOME=/home/your-account/Android/android-ndk-r21b
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")
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endif()
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#
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# 2. Check the presence of environment variable VCPKG_ROOT
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#
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if (NOT DEFINED ENV{VCPKG_ROOT})
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message(FATAL_ERROR "
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Please set an environment variable VCPKG_ROOT
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For example:
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export VCPKG_ROOT=/path/to/vcpkg
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")
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endif()
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#
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# 3. Set VCPKG_TARGET_TRIPLET according to ANDROID_ABI
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#
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# There are four different Android ABI, each of which maps to
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# a vcpkg triplet. The following table outlines the mapping from vcpkg architectures to android architectures
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#
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# |VCPKG_TARGET_TRIPLET | ANDROID_ABI |
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# |---------------------------|----------------------|
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# |arm64-android | arm64-v8a |
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# |arm-android | armeabi-v7a |
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# |x64-android | x86_64 |
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# |x86-android | x86 |
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#
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# The variable must be stored in the cache in order to successfully the two toolchains.
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#
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if (ANDROID_ABI MATCHES "arm64-v8a")
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set(VCPKG_TARGET_TRIPLET "arm64-android" CACHE STRING "" FORCE)
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elseif(ANDROID_ABI MATCHES "armeabi-v7a")
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set(VCPKG_TARGET_TRIPLET "arm-android" CACHE STRING "" FORCE)
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elseif(ANDROID_ABI MATCHES "x86_64")
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set(VCPKG_TARGET_TRIPLET "x64-android" CACHE STRING "" FORCE)
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elseif(ANDROID_ABI MATCHES "x86")
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set(VCPKG_TARGET_TRIPLET "x86-android" CACHE STRING "" FORCE)
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else()
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message(FATAL_ERROR "
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Please specify ANDROID_ABI
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For example
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cmake ... -DANDROID_ABI=armeabi-v7a
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Possible ABIs are: arm64-v8a, armeabi-v7a, x64-android, x86-android
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")
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endif()
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message("vcpkg_android.cmake: VCPKG_TARGET_TRIPLET was set to ${VCPKG_TARGET_TRIPLET}")
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#
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# 4. Combine vcpkg and Android toolchains
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#
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# vcpkg and android both provide dedicated toolchains:
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#
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# vcpkg_toolchain_file=$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake
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# android_toolchain_file=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake
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#
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# When using vcpkg, the vcpkg toolchain shall be specified first.
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# However, vcpkg provides a way to preload and additional toolchain,
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# with the VCPKG_CHAINLOAD_TOOLCHAIN_FILE option.
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set(VCPKG_CHAINLOAD_TOOLCHAIN_FILE $ENV{ANDROID_NDK_HOME}/build/cmake/android.toolchain.cmake)
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set(CMAKE_TOOLCHAIN_FILE $ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake)
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message("vcpkg_android.cmake: CMAKE_TOOLCHAIN_FILE was set to ${CMAKE_TOOLCHAIN_FILE}")
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message("vcpkg_android.cmake: VCPKG_CHAINLOAD_TOOLCHAIN_FILE was set to ${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}")
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endif(VCPKG_TARGET_ANDROID)
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