I confirm that compiling a Qt application with -std=gnu++11 while Qt was compiled without, works perfectly. This doesn't break the abi. I'm also using rubenvb mingw-w64. I could not compile with -std=c++11 as I have math constants such as M_PI in many places, but if you really like to, I can do the test. If I understand right, std-c++11 is just strictly standard compliant while -std-gnu++11 is more backward-compatible and has the same interesting features (but maybe allows less portable code, for instance with MSVC2012?)
By the way, since you are using mingw-w64, can you debug properly applications in QtCreator? When I debug programs, the call stack is empty, while I still can see locals, and when I step out a function, the debugger often crashes. I have no such problems with the mingw32 shipped with Qt. Thanks, Etienne > Date: Thu, 21 Mar 2013 16:52:29 -0400 > From: "K. Frank" <kfrank2...@gmail.com> > Subject: [Interest] [Mingw-w64-public] Compiling Qt (4 or 5) with > "-std=c++11" > To: Qt-interest <interest@qt-project.org>, mingw64 > <mingw-w64-pub...@lists.sourceforge.net> > Message-ID: > <cakenbtmj_yoaadthrvesdgw9yganinfz54brebkqhrvjoov...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Hello Lists! > > Should I expect to be able to build Qt with "-std=c++11" using mingw-w64? > > I am considering upgrading the compiler and libraries I use with the specific > goal of using "-std=c++11" in order to take advantage of the new c++ features. > (I am hoping to upgrade from gcc 4.7 to gcc 4.8 at the same time.) > > As I understand it, using "-std=c++11" causes abi breakage, so to do this, I > will have to recompile the various libraries I use. > > I have been using one of Ruben's 4.7 std::thread-enabled builds with Qt 4 with > good success (but not with "-std=c++11" turned on). If it makes sense, I > would > take this opportunity to upgrade to Qt 5, but I don't view that as essential. > > Has anyone built Qt with either gcc 4.7 or 4.8 with "-std=c++11" activated? > I've asked about the pros and cons of Qt 4 vs. Qt 5 in a separate post, but > would welcome comments on whether Qt 4 and 5 interact differently with > "-std=++11". (I also use qwt, currently version 6.0.1, but will ask about > that > in particular in a separate post.) > > Thanks in advance for any advice. > > > K. Frank > _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
