Re: isnan function conflicts with C++ standard library declarations

[Bruno Haible]

Martin Storsjö wrote:
> >> I ran into it while trying to build gettext with clang (with my pure-llvm
> >> based toolchain, at https://github.com/mstorsjo/llvm-mingw in case you're
> >> interested), so I presume there's something that goes different in gettext
> >> with clang/lld compared to gcc
> >
> > Yes. It would make sense to compare the config.status file generated by an 
> > llvm
> > build with those generated by a gcc build.
> 
> Just for the record, I believe the root cause is the fact that libc++'s 
> stdlib.h (which is included before the normal C runtime's stdlib.h) 
> includes math.h since this change: https://reviews.llvm.org/D60097

Thanks for the investigation. That explains it indeed, because the C++ files
of gettext do include <stdlib.h> but not <math.h> directly.

Bruno