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| author | Frederik Gladhorn <frederik.gladhorn@digia.com> | 2013-05-23 21:27:07 +0200 |
|---|---|---|
| committer | Frederik Gladhorn <frederik.gladhorn@digia.com> | 2013-05-23 21:27:07 +0200 |
| commit | d3a8bc803cd7c4ce106038bfc4b37cdd6bb8e177 (patch) | |
| tree | 3b6db0d4869f334d0eb4559c5ae457995cbe913e /src/corelib/global/qcompilerdetection.h | |
| parent | d934ddc297f6db94dbc548fe01da64350f13577d (diff) | |
| parent | 47a7628023610904c6ac52e23fa289f75f349b4e (diff) | |
Merge remote-tracking branch 'origin/stable' into dev
Conflicts:
src/corelib/io/qdatastream.cpp
src/corelib/io/qdatastream.h
src/corelib/json/qjsonwriter.cpp
src/plugins/platforms/cocoa/qcocoawindow.mm
src/plugins/platforms/xcb/qxcbkeyboard.cpp
Change-Id: I46fef1455f5a9f2ce1ec394a3c65881093c51b62
Diffstat (limited to 'src/corelib/global/qcompilerdetection.h')
| -rw-r--r-- | src/corelib/global/qcompilerdetection.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h index ada69d081d..fb96ad2732 100644 --- a/src/corelib/global/qcompilerdetection.h +++ b/src/corelib/global/qcompilerdetection.h @@ -618,7 +618,6 @@ # endif # if (__GNUC__ * 100 + __GNUC_MINOR__) >= 404 /* C++11 features supported in GCC 4.4: */ -# define Q_COMPILER_ATOMICS # define Q_COMPILER_AUTO_FUNCTION # define Q_COMPILER_AUTO_TYPE # define Q_COMPILER_CLASS_ENUM @@ -642,6 +641,11 @@ # define Q_COMPILER_RANGE_FOR # endif # if (__GNUC__ * 100 + __GNUC_MINOR__) >= 407 + /* GCC 4.4 implemented <atomic> and std::atomic using its old intrinsics. + * However, the implementation is incomplete for most platforms until GCC 4.7: + * instead, std::atomic would use an external lock. Since we need an std::atomic + * that is behavior-compatible with QBasicAtomic, we only enable it here */ +# define Q_COMPILER_ATOMICS /* GCC 4.6.x has problems dealing with noexcept expressions, * so turn the feature on for 4.7 and above, only */ # define Q_COMPILER_NOEXCEPT |