How to disable clang warnings in iOS build

Andreas E.

Hi,

I am unable to disable certain compilation warnings when building for iOS. I added various -Wno-... options to QMAKE_CXXFLAGS. However, qmake always adds -Wall at the end of the command line, so all my extra flags are ignored. This seems to happen on every project. Where does this come from and how can I fix this?

I am currently using Qt 5.11.2 and Qt Creator 4.7.1

Thanks a lot.

SGaist

Hi,

What values do you want to disable ?

Andreas E.

@SGaist currently my QMAKE_CXXFLAGS contain
-Wno-unused-local-typedefs
-Wno-ignored-qualifiers
-Wno-unused-function
-Wno-unused-but-set-parameter
mostly for macro-generated code.

SGaist

Can you show your .pro file ?

Andreas E.

@SGaist This happens with every .pro file. You can check this with any example. "-Wall" will always be added near the end of the clang command line after the QMAKE_CXXFLAGS.

ekkescorner

@Andreas-E. some time ago I had many unwanted warnings from iOS build and this was the way to suppress them
.pro:

    disable_warning.name = GCC_WARN_64_TO_32_BIT_CONVERSION
    disable_warning.value = NO
    QMAKE_MAC_XCODE_SETTINGS += disable_warning

Andreas E.

@ekkescorner This is not working, "-Wall" will still override those settings.