On quinta-feira, 17 de março de 2016 20:48:19 PDT René J. V. Bertin wrote: > Thiago Macieira wrote: > > The proper way of adding options is to modify the mkspec's qmake.conf file > > qmake.conf or .qmake.conf?
mkspec/macx-clang/qmake.conf > >> Checking my build scripts, I can confirm that CFLAGS and CXXFLAGS are set > >> *through the environment*, not by any direct action of mine. > > > > Yeah, not tested. This is the cause of your problem. > > A bit easy, no? I'd say either you simply ignore settings from the > environment, or else you do things correctly. And that would probably mean > adding settings from the environment to whatever flags you set yourself as > I think that's the accepted or at least usual way to do it (even CMake > does). Ok, I'll send the change to remove it. People will not be happy. > Anyway, I see that I had been missing a qmodule.pri edit. For some reason Qt > 5.5.1 built fine with QMAKE_CXXFLAGS="-O3 -march=native -g". After > replacing that with QMAKE_CXXFLAGS+=etc the build now appears to be happy. Because Qt 5.6 changed the point at which it adds -stdlib=libc++. In Qt 5.5, it happened after the qmodule.pri parsing. In Qt 5.6, it's done before. > Shouldn't be too hard to generate that file using += instead of a simple = ? It would just as equally break people's expectations. Autoconf-based configure scripts override the default settings. > >> Hmm... those are "bootstrapped" tools. But I can't find anything that > >> overrides QMAKE_CXXFLAGS. > > > > Can you confirm that it *is* present in src/corelib/Makefile? > > When is that file supposed to be created? I don't have it immediately after > running configure (and now of course it *will* contain the option that was > missing). It's created after moc and rcc are built. That is an answer by itself. The fact that only the src/tools Makefiles are affected is a red herring: you only have those Makefiles to look into. -- 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
