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#
# add_c_compiler_flag("-Werror" SUPPORTED_CFLAGS)
#
# Copyright (c) 2018 Andreas Schneider <asn@cryptomilk.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
include(CheckCCompilerFlag)
macro(add_c_compiler_flag _COMPILER_FLAG _OUTPUT_VARIABLE)
string(TOUPPER ${_COMPILER_FLAG} _COMPILER_FLAG_NAME)
string(REGEX REPLACE "^-" "" _COMPILER_FLAG_NAME "${_COMPILER_FLAG_NAME}")
string(REGEX REPLACE "(-|=|\ )" "_" _COMPILER_FLAG_NAME "${_COMPILER_FLAG_NAME}")
check_c_compiler_flag("${_COMPILER_FLAG}" WITH_${_COMPILER_FLAG_NAME}_FLAG)
if (WITH_${_COMPILER_FLAG_NAME}_FLAG)
#string(APPEND ${_OUTPUT_VARIABLE} "${_COMPILER_FLAG} ")
list(APPEND ${_OUTPUT_VARIABLE} ${_COMPILER_FLAG})
endif()
endmacro()
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