Files
splash/cmake/modules/AddCompilerFlag.cmake
2019-03-15 14:58:42 -04:00

51 lines
1.8 KiB
CMake

get_filename_component(_currentDir "${CMAKE_CURRENT_LIST_FILE}" PATH)
include("${_currentDir}/CheckCCompilerFlag.cmake")
include("${_currentDir}/CheckCXXCompilerFlag.cmake")
macro(AddCompilerFlag _flag)
string(REGEX REPLACE "[-.+/:= ]" "_" _flag_esc "${_flag}")
check_c_compiler_flag("${_flag}" check_c_compiler_flag_${_flag_esc})
check_cxx_compiler_flag("${_flag}" check_cxx_compiler_flag_${_flag_esc})
set(_c_flags "CMAKE_C_FLAGS")
set(_cxx_flags "CMAKE_CXX_FLAGS")
if(${ARGC} EQUAL 2)
set(${ARGV1} "${check_cxx_compiler_flag_${_flag_esc}}")
elseif(${ARGC} GREATER 2)
set(state 0)
unset(_c_flags)
unset(_cxx_flags)
foreach(_arg ${ARGN})
if(_arg STREQUAL "C_FLAGS")
set(state 1)
elseif(_arg STREQUAL "CXX_FLAGS")
set(state 2)
elseif(_arg STREQUAL "C_RESULT")
set(state 3)
elseif(_arg STREQUAL "CXX_RESULT")
set(state 4)
elseif(state EQUAL 1)
set(_c_flags "${_arg}")
elseif(state EQUAL 2)
set(_cxx_flags "${_arg}")
elseif(state EQUAL 3)
set(${_arg} ${check_c_compiler_flag_${_flag_esc}})
elseif(state EQUAL 4)
set(${_arg} ${check_cxx_compiler_flag_${_flag_esc}})
else()
message(FATAL_ERROR "Syntax error for AddCompilerFlag")
endif()
endforeach()
endif()
#overload the ARGC configuration of _c_flags and _cxx_flags variables
set(_c_flags "CMAKE_C_FLAGS")
set(_cxx_flags "CMAKE_CXX_FLAGS")
if(check_c_compiler_flag_${_flag_esc} AND DEFINED _c_flags)
set(${_c_flags} "${${_c_flags}} ${_flag}")
endif()
if(check_cxx_compiler_flag_${_flag_esc} AND DEFINED _cxx_flags)
set(${_cxx_flags} "${${_cxx_flags}} ${_flag}")
endif()
endmacro(AddCompilerFlag)