Bug#720941: Patch for GNU/Hurd

[Svante Signell]

On Tue, 2013-08-27 at 22:38 +0200, Samuel Thibault wrote:
> Svante Signell, le Mon 26 Aug 2013 22:33:45 +0200, a écrit :
> > @@ -290,7 +293,14 @@ else
> >      if test x$force_arch = x; then
> >        AC_MSG_WARN([If you intend to distribute this binary, make sure you use force_arch and set to i586 (or whichever CPU Arch you intend for)])
> >      fi
> > -    CFLAGS="$CFLAGS -O3 -fomit-frame-pointer -fprefetch-loop-arrays -fforce-addr -D__RELEASE__"
> > +    case x$target in
> > +      *-*-gnu*)
> > +        CFLAGS="$CFLAGS -O3 -fomit-frame-pointer -fforce-addr -D__RELEASE__"
> > +        ;;
> > +      *)
> > +        CFLAGS="$CFLAGS -O3 -fomit-frame-pointer -fprefetch-loop-arrays -fforce-addr -D__RELEASE__"
> > +        ;;
> > +    esac
> 
> Errr, why dropping -fprefetch-loop-arrays?  There shouldn't be any
> difference here between GNU/Linux and GNU/Hurd here.

During the compile there was a lot of complaints like:
tools/strutil.cpp:1:0: warning: -fprefetch-loop-arrays not supported for
this target (try -march switches) [enabled by default]

And the execution of zsnes results were the same.