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-rw-r--r--mkspecs/features/qt_common.prf15
1 files changed, 15 insertions, 0 deletions
diff --git a/mkspecs/features/qt_common.prf b/mkspecs/features/qt_common.prf
index 38602f642d..07300842a0 100644
--- a/mkspecs/features/qt_common.prf
+++ b/mkspecs/features/qt_common.prf
@@ -44,6 +44,21 @@ contains(TEMPLATE, .*lib) {
QMAKE_PRL_INSTALL_REPLACE += lib_replace
}
+# Extra warnings for Qt non-example code, to ensure cleanliness of the sources.
+# The block below may turn these warnings into errors for some Qt targets.
+# -Wdate-time: warn if we use __DATE__ or __TIME__ (we want to be able to reproduce the exact same binary)
+# -Wvla: use of variable-length arrays (an extension to C++)
+clang {
+ # Clang 3.5 introduced -Wdate-time
+ # The conditional assumes we aren't compiling against Clang 2.x anymore
+ greaterThan(QT_CLANG_MAJOR_VERSION, 3)|greaterThan(QT_CLANG_MINOR_VERSION, 4): \
+ QMAKE_CXXFLAGS_WARN_ON += -Wdate-time
+} else: gcc:!intel_icc {
+ QMAKE_CXXFLAGS_WARN_ON += -Wvla
+ # GCC 5 introduced -Wdate-time
+ greaterThan(QT_GCC_MAJOR_VERSION, 4): QMAKE_CXXFLAGS_WARN_ON += -Wdate-time
+}
+
warnings_are_errors:warning_clean {
# If the module declares that it has does its clean-up of warnings, enable -Werror.
# This setting is compiler-dependent anyway because it depends on the version of the