#

# 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()