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cmake: treat warnings as error in compiler flag tests
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@ -71,16 +71,18 @@ function (die msg)
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endfunction ()
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function (add_c_flag_if_supported flag var)
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string(REPLACE "-" "_" supported ${flag}_c)
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check_c_compiler_flag(${flag} ${supported})
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set(TMP "-Werror ${flag}")
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string(REGEX REPLACE "[- ]" "_" supported ${TMP}_c)
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check_c_compiler_flag(${TMP} ${supported})
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if(${${supported}})
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set(${var} "${${var}} ${flag}" PARENT_SCOPE)
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endif()
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endfunction()
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function (add_cxx_flag_if_supported flag var)
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string(REPLACE "-" "_" supported ${flag}_cxx)
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check_cxx_compiler_flag(${flag} ${supported})
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set(TMP "-Werror ${flag}")
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string(REGEX REPLACE "[- ]" "_" supported ${TMP}_cxx)
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check_cxx_compiler_flag(${TMP} ${supported})
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if(${${supported}})
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set(${var} "${${var}} ${flag}" PARENT_SCOPE)
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endif()
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