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include(CheckCCompilerFlag)
function(test_and_set_c_compiler_flag_global _flag)
string(REGEX REPLACE "-" "_" _sflag ${_flag})
set(CMAKE_REQUIRED_FLAGS ${_flag})
check_c_compiler_flag(${_flag} COMPILER_SUPPORTS_FLAG_${_sflag})
if(COMPILER_SUPPORTS_FLAG_${_sflag})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flag}" PARENT_SCOPE)
endif()
endfunction(test_and_set_c_compiler_flag_global)
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