gcc-4.1.2 RC1 build problem

[Ralf Wildenhues]

Hello Paolo, all,

* Paolo Bonzini wrote on Mon, Feb 05, 2007 at 10:30:41AM CET:
> 
> >The macro $(SYSTEM_HEADER_DIR) is used in a double-quoted context,
> >leading to nonportable "...`..."..."...`...", [...]

> >Proposed untested patch.  (I also haven't checked whether there are
> >other instances of this issue in 'make install' code.)
> 
> If you or anybody can test this (better on an affected system, but even 
> i686-pc-linux-gnu would be ok), ok for mainline and all affected release 
> branches.

With the patch, the gcc-4.1.2-20070128 tarball passes
  configure --enable-languages=c && gmake && gmake install

on alphaev67-dec-osf5.1, and fails without it.

Thanks for the review.  Please note I don't have write access.

Cheers,
Ralf