On Wed, 24 Jun 2015, Andrew Senkevich wrote: > Can anybody tell something about this difference in drivers?
libstdc++ uses libm - that's probably why g++ links it in by default. Modern good practice would say that it should only be linked directly into a program (should only end up listed in DT_NEEDED) if actually required by that program, not if only used indirectly by libstdc++. > May be needed fix for g++ driver to add also -lmvec if GLIBC version > >= 2.22 found on configure? I don't think that's a good idea (even if you depend on the glibc version on the target, for which there is various existing precedent, depending on *how that version is configured* doesn't seem such a good idea, and libmvec is an optional feature only supported at all on x86_64). -- Joseph S. Myers jos...@codesourcery.com
