> > g++ defaults to the C++ standard of 2003. 2 years ago a new standard > has been published with a log of improvements. > We've been using selected features from C++11 for a while now, and we are very happy with the improvements. Features like strongly typed enums are worth the switch alone.
Today the g++ commands in the build process of lilypond do not specify > any standard so that it defaults to c++03. > Could we switch to c++11? > Well if you want full c++11 you're gonna have to use gcc 4.8(.1) which is probably a bit too close to the edge for most people/distributions. You could look at this page and figure out which features you want to use and what minimum version of the compiler you want to support: http://gcc.gnu.org/projects/cxx0x.html I suspect that a test would be required. Can somebody tell me where I > should add the option -std=c++11 to test this? > For example, can I just replace the following line of aclocal.m4: > CFLAGS=" -pipe $CFLAGS" > by > CFLAGS=" -pipe -std=c++11 $CFLAGS" > CXXFLAGS would be the place to put that flag.... on an autotoolized build you could just run CXXFLAGS="..." ./configure ... Be prepared for lots of deprecated warnings because even std::auto_ptr should be replaced by std::unique_ptr. Immanuel On Sun, Jul 14, 2013 at 6:05 PM, Frédéric Bron <frederic.b...@m4x.org>wrote: > Hi, > > g++ defaults to the C++ standard of 2003. 2 years ago a new standard > has been published with a log of improvements. > Today the g++ commands in the build process of lilypond do not specify > any standard so that it defaults to c++03. > Could we switch to c++11? > I suspect that a test would be required. Can somebody tell me where I > should add the option -std=c++11 to test this? > For example, can I just replace the following line of aclocal.m4: > CFLAGS=" -pipe $CFLAGS" > by > CFLAGS=" -pipe -std=c++11 $CFLAGS" > > Regards, > > Frédéric > > _______________________________________________ > lilypond-devel mailing list > lilypond-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/lilypond-devel >
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