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Can't build application on OS X after updating to the latest version of Qt & XCode

  • I also updated to OS X Sierra. I updated to xcode version 8.0 (and Qt 5.7) and now I'm getting this error when I try to run make after doing a qmake:

    "Qt requires C++11 support"
    #  error "Qt requires C++11 support"

    and other ones like:

    unknown type name 'QAtomicOps'
    typedef QAtomicOps<T> Ops;

    This is odd since I've got CONFIG += c++14 in my .pro file. I tried setting it to c++11, but it didn't work either.

  • Lifetime Qt Champion


    That's because Qt 5.7 was built against the 10.11 SDK and the upgrade to Xcode 8 nuked that one and installed 10.12.

    As provisorily workaround your can add:

    macx {
        QMAKE_MAC_SDK = macosx10.12

    to your .pro file

  • This seemed to have fixed itself now. I don't know why :\

    Thanks anyways.

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