[committed 2/2] libstdc++: Use GCC's predefined macro for endianness [PR104080]

[Jakub Jelinek]

On Tue, Jan 18, 2022 at 02:44:34PM -0500, Patrick Palka via Gcc-patches wrote:
> On Tue, Jan 18, 2022 at 5:12 AM Jonathan Wakely <jwakely@redhat.com> wrote:
> >
> > Tested x86_64-linux, pushed to trunk.
> >
> >
> > Instead of hardcoded preprocessor conditionals with explicit target
> > checks, just rely on the fact that __BYTE_ORDER__ is always defined by
> > GCC.
> 
> Thanks a lot for fixing these!  I apparently missed removing this
> batch of #includes from the amalgamation in r12-6647.  For
> completeness I suppose we should remove these #includes too.   I
> wonder if we can rely on __BYTE_ORDER__ being defined by other
> compilers?

clang++ 8 and later defines, them, ICC 16+ too.

	Jakub