summaryrefslogtreecommitdiffstats
path: root/src/corelib/global/qcompilerdetection.h
diff options
context:
space:
mode:
authorLiang Qi <liang.qi@qt.io>2017-01-24 10:33:37 +0100
committerOswald Buddenhagen <oswald.buddenhagen@qt.io>2017-01-25 20:06:06 +0100
commit318b58562ae89453fb98e8145cd0440e14ba60b0 (patch)
tree622bc032cf076b4569621032f3a3315d95c3ae88 /src/corelib/global/qcompilerdetection.h
parentc28fde3fdac19fd5a5f614bb7983080031c924b3 (diff)
parent79352528a1726b4551ea4d9285dd2394dd0d43da (diff)
Merge remote-tracking branch 'origin/5.8' into dev
Conflicts: .qmake.conf mkspecs/common/msvc-desktop.conf mkspecs/common/msvc-version.conf mkspecs/common/winrt_winphone/qmake.conf mkspecs/features/mac/default_post.prf mkspecs/features/mac/sdk.prf mkspecs/features/qt.prf mkspecs/features/uikit/default_post.prf mkspecs/features/winrt/default_pre.prf mkspecs/winphone-arm-msvc2013/qmake.conf mkspecs/winphone-x86-msvc2013/qmake.conf mkspecs/winrt-arm-msvc2013/qmake.conf mkspecs/winrt-x64-msvc2013/qmake.conf mkspecs/winrt-x86-msvc2013/qmake.conf qmake/generators/win32/msvc_vcproj.cpp src/gui/kernel/qwindowsysteminterface.cpp src/network/kernel/qhostaddress.cpp src/plugins/platforms/mirclient/qmirclientplugin.cpp src/plugins/platforms/mirclient/qmirclientplugin.h src/widgets/util/qsystemtrayicon.cpp tests/auto/widgets/itemviews/qlistview/tst_qlistview.cpp tools/configure/Makefile.mingw tools/configure/Makefile.win32 Done-with: Jake Petroules <jake.petroules@qt.io> Done-with: Oswald Buddenhagen <oswald.buddenhagen@qt.io> Change-Id: I4be3262d3994e11929d3b1ded2c3379783797dbe
Diffstat (limited to 'src/corelib/global/qcompilerdetection.h')
-rw-r--r--src/corelib/global/qcompilerdetection.h17
1 files changed, 13 insertions, 4 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h
index 723611e1d8..a9922bb31d 100644
--- a/src/corelib/global/qcompilerdetection.h
+++ b/src/corelib/global/qcompilerdetection.h
@@ -996,11 +996,20 @@
#ifdef __cplusplus
# include <utility>
# if defined(Q_OS_QNX)
-// QNX: test if we are using libcpp (Dinkumware-based).
-// Older versions (QNX 650) do not support C++11 features
+// By default, QNX 7.0 uses libc++ (from LLVM) and
+// QNX 6.X uses Dinkumware's libcpp. In all versions,
+// it is also possible to use GNU libstdc++.
+
+// For Dinkumware, some features must be disabled
+// (mostly because of library problems).
+// Dinkumware is assumed when __GLIBCXX__ (GNU libstdc++)
+// and _LIBCPP_VERSION (LLVM libc++) are both absent.
+# if !defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
+
+// Older versions of libcpp (QNX 650) do not support C++11 features
// _HAS_* macros are set to 1 by toolchains that actually include
// Dinkum C++11 libcpp.
-# if !defined(__GLIBCXX__)
+
# if !defined(_HAS_CPP0X) || !_HAS_CPP0X
// Disable C++11 features that depend on library support
# undef Q_COMPILER_INITIALIZER_LISTS
@@ -1017,7 +1026,7 @@
// Disable constexpr support on QNX even if the compiler supports it
# undef Q_COMPILER_CONSTEXPR
# endif // !_HAS_CONSTEXPR
-# endif // !__GLIBCXX__
+# endif // !__GLIBCXX__ && !_LIBCPP_VERSION
# endif // Q_OS_QNX
# if (defined(Q_CC_CLANG) || defined(Q_CC_INTEL)) && defined(Q_OS_MAC) && defined(__GNUC_LIBSTD__) \
&& ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402)