cmake/Tests/RunCMake/try_compile/CMP0128-common.cmake

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2022-11-03 08:47:52 +01:00
cmake_policy(SET CMP0067 NEW)
enable_language(CXX)
# Isolate the one try_compile below in the error log.
set(CMakeError_log "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log")
file(REMOVE "${CMakeError_log}")
# Add our own -std= flag to the try_compile check.
set(CMAKE_REQUIRED_FLAGS -std=c++11)
# Tell CMP0128 NEW behavior to append a -std= flag (after ours).
if(CMAKE_CXX_EXTENSIONS_DEFAULT)
set(CMAKE_CXX_EXTENSIONS OFF)
else()
set(CMAKE_CXX_EXTENSIONS ON)
endif()
include(CheckSourceCompiles)
check_source_compiles(CXX "
${check_cxx_std}
int main()
{
return 0;
}
" SRC_COMPILED)
if(NOT SRC_COMPILED)
if(EXISTS "${CMakeError_log}")
file(READ "${CMakeError_log}" err_log)
endif()
message("${err_log}")
endif()