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Re: SPARC config files cleanup 2/n
On Fri, 2005-01-21 at 11:11 -0600, Joel Sherrill wrote:
> Ralf Corsepius wrote:
> > On Fri, 2005-01-21 at 08:34 -0600, Joel Sherrill wrote:
> >
> >
> >>Index: gcc/config/rtems.h
> >>===================================================================
> >>RCS file: /cvs/gcc/gcc/gcc/config/rtems.h,v
> >>retrieving revision 1.6
> >>diff -u -r1.6 rtems.h
> >>--- gcc/config/rtems.h 5 Jul 2004 19:49:14 -0000 1.6
> >>+++ gcc/config/rtems.h 21 Jan 2005 14:13:04 -0000
> >>@@ -19,6 +19,7 @@
> >> Boston, MA 02111-1307, USA. */
> >>
> >> /* The system headers under RTEMS are C++-aware. */
> >>+#undef NO_IMPLICIT_EXTERN_C
> >> #define NO_IMPLICIT_EXTERN_C
> >>
> >> /*
> >
> > Can you explain this patch? I don't understand why it is necessary.
>
> I was seeing lots of redefinition warnings in one of the target
> builds. It may not be directly related to the sparc. I don't
> remember which target tripped the warning.
It would be interesting to know which targets tripped this.
In a proper configuration the undef should not be necessary, so having
to undef it would indicate a bug somewhere in a gcc/config/<cpu>/*.h or
an ordering problem in a tm_file-line in config.gcc.
Having build (almost ) all rtems-gcc-4.0 targets today, I didn't notice
any such problem.
Ralf