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# Include the NDK hook.
# It can be used by NDK to inject necessary fixes for an earlier cmake.
if(CMAKE_ANDROID_NDK)
include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android.cmake OPTIONAL)
endif()
include(Platform/Linux)
set(ANDROID 1)
# Natively compiling on an Android host doesn't need these flags to be reset.
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
return()
endif()
# Conventionally Android does not use versioned soname
# But in modern versions it is acceptable
if(NOT DEFINED CMAKE_PLATFORM_NO_VERSIONED_SONAME)
set(CMAKE_PLATFORM_NO_VERSIONED_SONAME 1)
endif()
# Android reportedly ignores RPATH, and we cannot predict the install
# location anyway.
set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "")
# Nsight Tegra Visual Studio Edition takes care of
# prefixing library names with '-l'.
if(CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android")
set(CMAKE_LINK_LIBRARY_FLAG "")
endif()
# Commonly used Android toolchain files that pre-date CMake upstream support
# set CMAKE_SYSTEM_VERSION to 1. Avoid interfering with them.
if(CMAKE_SYSTEM_VERSION EQUAL 1)
return()
endif()
if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
# Tell CMake not to search host sysroots for headers/libraries.
# CMAKE_FIND_ROOT_PATH must be non-empty for CMAKE_FIND_ROOT_PATH_MODE_* == ONLY
# to be meaningful. The actual path used here is fairly meaningless since CMake
# doesn't handle the NDK sysroot layout (per-arch and per-verion subdirectories for
# libraries), so find_library is handled separately by CMAKE_SYSTEM_LIBRARY_PATH.
# https://github.com/android-ndk/ndk/issues/890
if(NOT CMAKE_FIND_ROOT_PATH)
list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_ANDROID_NDK}")
endif()
# Allow users to override these values in case they want more strict behaviors.
# For example, they may want to prevent the NDK's libz from being picked up so
# they can use their own.
# https://github.com/android-ndk/ndk/issues/517
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
endif()
# find_library's default search paths below a prefix do not match the Android
# sysroot layout, so we need to give the direct path to the libraries
# via CMAKE_SYSTEM_*_PATH.
#
# Ideally we'd set CMAKE_SYSTEM_PREFIX_PATH. But that causes the
# non-api-level-specific path to be searched first for find_library, which will
# cause libdl.a to be found before libdl.so.
# https://github.com/android/ndk/issues/929
# Clears the paths set by UnixPaths.cmake.
set(CMAKE_SYSTEM_PREFIX_PATH)
set(CMAKE_SYSTEM_INCLUDE_PATH)
set(CMAKE_SYSTEM_LIBRARY_PATH)
# Don't search paths in PATH environment variable.
if(NOT DEFINED CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH)
set(CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH OFF)
endif()
# Allows CMake to find headers in the architecture-specific include directories.
set(CMAKE_LIBRARY_ARCHITECTURE "${CMAKE_ANDROID_ARCH_TRIPLE}")
set(_ANDROID_SYSROOT_PREFIX "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/sysroot/usr")
list(APPEND CMAKE_SYSTEM_INCLUDE_PATH
"${_ANDROID_SYSROOT_PREFIX}/include/${CMAKE_LIBRARY_ARCHITECTURE}")
list(APPEND CMAKE_SYSTEM_INCLUDE_PATH "${_ANDROID_SYSROOT_PREFIX}/include")
# Instructs CMake to search the correct API level for libraries.
list(APPEND CMAKE_SYSTEM_LIBRARY_PATH
"${_ANDROID_SYSROOT_PREFIX}/lib/${CMAKE_LIBRARY_ARCHITECTURE}/${CMAKE_SYSTEM_VERSION}")
list(APPEND CMAKE_SYSTEM_LIBRARY_PATH
"${_ANDROID_SYSROOT_PREFIX}/lib/${CMAKE_LIBRARY_ARCHITECTURE}")
list(APPEND CMAKE_SYSTEM_PROGRAM_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/bin")
endif()
# Include the NDK hook.
# It can be used by NDK to inject necessary fixes for an earlier cmake.
if(CMAKE_ANDROID_NDK)
include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android.cmake OPTIONAL)
endif()
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