GCC in AIX

[Rob Sherry]

> Is it necessary to use the local native compiler - xlc in this case,
to
> compile gcc ? I have a gcc-4.2.3 installed on AIX and would now like
to

No. In my experience it's better to stick to an all-GCC environment.

> install gcc 4.3.2. However if I compile with existing gcc then the
> compiles is extremly slow and almost does not do much. It took about a
> day to just finish stage-1. I tried to check for any load etc but
could

As someone else noted, it's not GCC's fault--it's an issue with the
shell you're using (I'll bet it's not bash...). This is documented
somewhere (I don't recall exactly, I think it's actually on the Apache
httpd site...) Google up something like 'slow configure AIX' and
you'll find it.

The fix, as previously stated, is to set the CONFIG_SHELL environment
variable to point to your bash install (there's almost always a link
like /usr/bin/bash pointing to somewhere in /opt/freeware if you use
the IBM-provided distro; otherwise it's wherever you put it).

FYI this will trip you up in a number of software builds, including 
Apache's httpd, and some of the larger GNU packages.

> "./config.h", line 435.9: 1506-213 (S) Macro name inline cannot be
> redefined.

[errors snipped]

If you want to stick with the IBM compiler, it's time for either a 
source dive, or hitting up someone who really knows the IBM compiler
environment (the former being both more educational, and less
expensive in many ways, IMHO).

Rob