In my case, I have to add libstdc++.dylib as a linker argument, else the presence of an old static third-party library that I must use, causes some linker error.
But __GNUC_LIBSTD__ is not defined, hence Q_COMPILER_RVALUE_REFS is #defined. IOW, it's possible to link with libstdc++ without the penalty of undefining Q_COMPILER_RVALUE_REFS Philippe On Fri, 25 Sep 2015 12:51:29 -0700 Thiago Macieira <thiago.macie...@intel.com> wrote: > On Friday 25 September 2015 20:55:03 Philippe wrote: > > Why do you say so? > > > > Qt defines Q_COMPILER_RVALUE_REFS > > and I don't see this define dependent on the presence of libstdc++ > > Sven is right. From qcompilerdetection.h: > > # 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) > // Apple has not updated libstdc++ since 2007, which means it does not have > // <initializer_list> or std::move. Let's disable these features > # undef Q_COMPILER_INITIALIZER_LISTS > # undef Q_COMPILER_RVALUE_REFS > # undef Q_COMPILER_REF_QUALIFIERS > // Also disable <atomic>, since it's clearly not there > # undef Q_COMPILER_ATOMICS > # endif > > In other words: stop using libstdc++ on OS X. > -- > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
