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Use CMAKE_TRY_COMPILE_PLATFORM_VARIABLES to propogate values (#5180)

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CMAKE_TRY_COMPILE_PLATFORM_VARIABLES is used when CMake 3.6.0 or higher
is encountered. For older versions the previous behavior emulating this
functionality is used.
This commit is contained in:
Don 2019-09-23 13:43:52 -07:00 committed by Curtis J Bezault
parent 889fa61c29
commit c7542de3f3
1 changed files with 28 additions and 11 deletions
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39
scripts/buildsystems/vcpkg.cmake
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@ -1,10 +1,17 @@
# Mark variables as used so cmake doesn't complain about them
mark_as_advanced(CMAKE_TOOLCHAIN_FILE)
# This is a backport of CMAKE_TRY_COMPILE_PLATFORM_VARIABLES to cmake 3.0
get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
if( _CMAKE_IN_TRY_COMPILE )
include( "${CMAKE_CURRENT_SOURCE_DIR}/../vcpkg.config.cmake" OPTIONAL )
# Determine whether the toolchain is loaded during a try-compile configuration
get_property(_CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
if (${CMAKE_VERSION} VERSION_LESS "3.6.0")
set(_CMAKE_EMULATE_TRY_COMPILE_PLATFORM_VARIABLES ON)
else()
set(_CMAKE_EMULATE_TRY_COMPILE_PLATFORM_VARIABLES OFF)
endif()
if(_CMAKE_IN_TRY_COMPILE AND _CMAKE_EMULATE_TRY_COMPILE_PLATFORM_VARIABLES)
include("${CMAKE_CURRENT_SOURCE_DIR}/../vcpkg.config.cmake" OPTIONAL)
endif()
if(VCPKG_CHAINLOAD_TOOLCHAIN_FILE)
@ -264,13 +271,23 @@ set(_UNUSED ${CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY})
set(_UNUSED ${CMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY})
set(_UNUSED ${CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_SKIP})
# Propogate these values to try-compile configurations so the triplet and toolchain load
if(NOT _CMAKE_IN_TRY_COMPILE)
file(TO_CMAKE_PATH "${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}" _chainload_file)
file(TO_CMAKE_PATH "${_VCPKG_ROOT_DIR}" _root_dir)
file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/vcpkg.config.cmake"
"set(VCPKG_TARGET_TRIPLET \"${VCPKG_TARGET_TRIPLET}\" CACHE STRING \"\")\n"
"set(VCPKG_APPLOCAL_DEPS \"${VCPKG_APPLOCAL_DEPS}\" CACHE STRING \"\")\n"
"set(VCPKG_CHAINLOAD_TOOLCHAIN_FILE \"${_chainload_file}\" CACHE STRING \"\")\n"
"set(_VCPKG_ROOT_DIR \"${_root_dir}\" CACHE STRING \"\")\n"
if(_CMAKE_EMULATE_TRY_COMPILE_PLATFORM_VARIABLES)
file(TO_CMAKE_PATH "${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}" _chainload_file)
file(TO_CMAKE_PATH "${_VCPKG_ROOT_DIR}" _root_dir)
file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/vcpkg.config.cmake"
"set(VCPKG_TARGET_TRIPLET \"${VCPKG_TARGET_TRIPLET}\" CACHE STRING \"\")\n"
"set(VCPKG_APPLOCAL_DEPS \"${VCPKG_APPLOCAL_DEPS}\" CACHE STRING \"\")\n"
"set(VCPKG_CHAINLOAD_TOOLCHAIN_FILE \"${_chainload_file}\" CACHE STRING \"\")\n"
"set(_VCPKG_ROOT_DIR \"${_root_dir}\" CACHE STRING \"\")\n"
)
else()
set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
VCPKG_TARGET_TRIPLET
VCPKG_APPLOCAL_DEPS
VCPKG_CHAINLOAD_TOOLCHAIN_FILE
_VCPKG_ROOT_DIR
)
endif()
endif()