PATCH: Fix Darwin bootstrap

[Andreas Tobler]

Mark Mitchell wrote:
> The Darwin version of ranlib does not make common definitions
> available in the archive table of contents -- unless you pass it the
> "-c" option.  Most other versions of ranlib do make such definitions
> available, and GCC presently depends on that behavior, accidentally.
> 
> (On a meta note, how is libbackend.a a win?  I'd love it if we really
> have a library for the back end, but we don't, and to get there we
> need to change the code, not the build process.  Right now, it seems
> like building this .a file is just a way of slowing down the
> bootstrap...)
> 
> Tested on powerpc-apple-darwin7.4.0, installed on the mainline.

Was this for this one ?

ld: Undefined symbols:
_chrec_dont_know
_chrec_known
make[2]: *** [cc1] Error 1

If not, which break?

Thanks,
Andreas