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Fix C++11 compiler detection for QNX.

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1. _HAS_DINKUM_CLIB is defined whenever a C header is included, even when
Dinkum is disabled.

2. _HAS_* macros are always defined, as either 0 or 1.

Change-Id: I727b854a6a733e2028e6facc327e264d0c4c9e90
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Rafael Roquetto 2015-10-28 14:56:16 -02:00
parent 132b032a2f
commit f7f4dde80e
1 changed files with 9 additions and 7 deletions
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16
src/corelib/global/qcompilerdetection.h
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@ -922,24 +922,26 @@
# if defined(Q_OS_QNX)
// QNX: test if we are using libcpp (Dinkumware-based).
// Older versions (QNX 650) do not support C++11 features
// _HAS_CPP0X is defined by toolchains that actually include
// _HAS_* macros are set to 1 by toolchains that actually include
// Dinkum C++11 libcpp.
# if defined(_HAS_DINKUM_CLIB) && !defined(_HAS_CPP0X)
# if !__GLIBCXX__
# if !_HAS_CPP0X
// Disable C++11 features that depend on library support
# undef Q_COMPILER_INITIALIZER_LISTS
# undef Q_COMPILER_RVALUE_REFS
# undef Q_COMPILER_REF_QUALIFIERS
# undef Q_COMPILER_UNICODE_STRINGS
# undef Q_COMPILER_NOEXCEPT
# endif
# if defined(_HAS_DINKUM_CLIB) && !defined(_HAS_NULLPTR_T)
# endif // !_HAS_CPP0X
# if !_HAS_NULLPTR_T
# undef Q_COMPILER_NULLPTR
# endif
# if defined(_HAS_DINKUM_CLIB) && !defined(_HAS_CONSTEXPR)
# endif //!_HAS_NULLPTR_T
# if !_HAS_CONSTEXPR
// The libcpp is missing constexpr keywords on important functions like std::numeric_limits<>::min()
// Disable constexpr support on QNX even if the compiler supports it
# undef Q_COMPILER_CONSTEXPR
# endif
# endif // !_HAS_CONSTEXPR
# endif // !__GLIBCXX__
# 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)