Use the QMAKE_CXXFLAGS_WARN_ON variable for setting -Werror
This would mean we don't pass -Werror when under CONFIG += warn_off. However, that's not the main goal. The main goal of this change is to have -Werror appear *after* -Wall -Wextra. With some compilers, like Clang, this is necessary to have the -Wno-error=foo options work properly. For example, if the -Wfoo warning gets enabled by -Wall, Clang will treat it as an error if the arguments appear in the following order: -Werror -Wno-error=foo -Wall But not if they appear in this order: -Wall -Werror -Wno-error=foo Change-Id: I38c820bffc8277d909391e9bf557db5347836b9c Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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@ -32,10 +32,10 @@ warnings_are_errors:warning_clean {
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apple_ver = $${QT_APPLE_CLANG_MAJOR_VERSION}.$${QT_APPLE_CLANG_MINOR_VERSION}
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reg_ver = $${QT_CLANG_MAJOR_VERSION}.$${QT_CLANG_MINOR_VERSION}
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contains(apple_ver, "4\\.[012]")|contains(reg_ver, "3\\.[34]") {
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QMAKE_CXXFLAGS += -Werror -Wno-error=\\$${LITERAL_HASH}warnings -Wno-error=deprecated-declarations $$WERROR
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QMAKE_CXXFLAGS_WARN_ON += -Werror -Wno-error=\\$${LITERAL_HASH}warnings -Wno-error=deprecated-declarations $$WERROR
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# glibc's bswap_XX macros use the "register" keyword
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linux: QMAKE_CXXFLAGS += -Wno-error=deprecated-register
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linux:equals(reg_ver, "3.4"): QMAKE_CXXFLAGS_WARN_ON += -Wno-error=deprecated-register
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}
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} else:intel_icc:linux {
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# Intel CC 13.0 - 14.0, on Linux only
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@ -47,20 +47,20 @@ warnings_are_errors:warning_clean {
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# 1478: function "entity" (declared at line N) was declared deprecated
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# 1881: argument must be a constant null pointer value
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# (NULL in C++ is usually a literal 0)
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QMAKE_CXXFLAGS += -Werror -ww177,1224,1478,1881 $$WERROR
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QMAKE_CXXFLAGS_WARN_ON += -Werror -ww177,1224,1478,1881 $$WERROR
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}
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} else:gcc:!clang:!intel_icc {
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# GCC 4.6-4.8
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ver = $${QT_GCC_MAJOR_VERSION}.$${QT_GCC_MINOR_VERSION}
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contains(ver, "4\\.[678]") {
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QMAKE_CXXFLAGS += -Werror -Wno-error=cpp -Wno-error=deprecated-declarations $$WERROR
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QMAKE_CXXFLAGS_WARN_ON += -Werror -Wno-error=cpp -Wno-error=deprecated-declarations $$WERROR
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# GCC prints this bogus warning, after it has inlined a lot of code
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# error: assuming signed overflow does not occur when assuming that (X + c) < X is always false
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QMAKE_CXXFLAGS += -Wno-error=strict-overflow
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QMAKE_CXXFLAGS_WARN_ON += -Wno-error=strict-overflow
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# Work-around for bug https://code.google.com/p/android/issues/detail?id=58135
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android: QMAKE_CXXFLAGS += -Wno-error=literal-suffix
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android: QMAKE_CXXFLAGS_WARN_ON += -Wno-error=literal-suffix
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}
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}
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unset(ver)
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