[PATCH] Workaround PR33781: Bootstrap failure on mips-sgi-irix6.5

["Roger Sayle" <roger at eyesopen dot com>]

The following patch is a workaround for the bootstrap failure on IRIX,
described in PR bootstrap/33781.  The new fixed-point extensions to
C that are enabled by default on mips*-*-* targets, create an excessively
large number of helper files, and on IRIX the resulting $(AR) invocation
overflows the default kernel limits of 20K chars per command line.

One solution is to recommend IRIX users reconfigure/rebuild their kernel.
Another solution is to document that "--disable-fixed-point" must be 
specified
to configure to build on IRIX.  A third solution is the hack below which
simply disables this extension by default on IRIX.  Suitably motivated IRIX
developers can always explicitly specify "--enable-fixed-point" after 
they've
modified their OS limits.

Many thanks for DJ and Jakub Jelinek for their efforts in trying to come
up with a programatic solution in GCC's build machinery.  Alas without
success.

Thoughts?

2008-01-30  Roger Sayle  <roger@eyesopen.com>

       PR bootstrap/33781
       * configure.ac (--enable-fixed-point): Disable unless explicitly
       requested on IRIX.
       * configure: Regenerate.

Roger
--

Attachment: patch.log
Description: Binary data

Attachment: patch.txt
Description: Text document