| include(CheckLinkerFlag OPTIONAL) |
| |
| if (COMMAND check_linker_flag) |
| macro(llvm_check_linker_flag) |
| check_linker_flag(${ARGN}) |
| endmacro() |
| else() |
| # Until the minimum CMAKE version is 3.18 |
| |
| include(CheckCXXCompilerFlag) |
| include(CMakePushCheckState) |
| |
| # cmake builtin compatible, except we assume lang is C or CXX |
| function(llvm_check_linker_flag lang flag out_var) |
| cmake_policy(PUSH) |
| cmake_policy(SET CMP0056 NEW) |
| cmake_push_check_state() |
| set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${flag}") |
| if("${lang}" STREQUAL "C") |
| check_c_compiler_flag("" ${out_var}) |
| elseif("${lang}" STREQUAL "CXX") |
| check_cxx_compiler_flag("" ${out_var}) |
| else() |
| message(FATAL_ERROR "\"${lang}\" is not C or CXX") |
| endif() |
| cmake_pop_check_state() |
| cmake_policy(POP) |
| endfunction() |
| endif() |
