diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h index 8e52c50322947fbb4249cbb718fcd08f5fd65df4..d7d56995914771f99450c1c3db71707cc71eeb3e 100644 --- a/src/corelib/global/qcompilerdetection.h +++ b/src/corelib/global/qcompilerdetection.h @@ -881,6 +881,13 @@ # undef Q_COMPILER_RVALUE_REFS # undef Q_COMPILER_REF_QUALIFIERS # endif +# if defined(_LIBCPP_VERSION) +// libc++ uses __has_feature(cxx_atomic), so disable the feature if the compiler +// doesn't support it. That's required for the Intel compiler on OS X, for example. +# if !__has_feature(cxx_atomic) +# undef Q_COMPILER_ATOMICS +# endif +# endif # if defined(Q_COMPILER_THREADSAFE_STATICS) && defined(Q_OS_MAC) // Mac OS X: Apple's low-level implementation of the C++ support library // (libc++abi.dylib, shared between libstdc++ and libc++) has deadlocks. The