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Android: Fix find_* search order within NDK for unified toolchains

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This commit is contained in:
Haibo Huang
2020-10-13 19:23:39 -07:00
committed by Brad King
parent 5cdf37e4cc
commit a7f41a7ee4
1 changed files with 36 additions and 0 deletions
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36
Modules/Platform/Android.cmake
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@@ -59,4 +59,40 @@ if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
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()