blob: 2524aafff05746006e630685abaa2617ef8c50a4 [file] [log] [blame]
include(CMakePushCheckState)
include(CheckCompilerFlag)
function(llvm_check_compiler_linker_flag lang flag out_var)
# If testing a flag with check_compiler_flag, it gets added to the compile
# command only, but not to the linker command in that test. If the flag
# is vital for linking to succeed, the test would fail even if it would
# have succeeded if it was included on both commands.
#
# Therefore, try adding the flag to CMAKE_REQUIRED_FLAGS, which gets
# added to both compiling and linking commands in the tests.
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${flag}")
check_compiler_flag("${lang}" "" ${out_var})
cmake_pop_check_state()
endfunction()