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[DPRG] Off Topic: gcc help

Subject: [DPRG] Off Topic: gcc help
From: Steve Rainwater srainwater at ncc.com
Date: Thu Jul 15 16:17:13 CDT 2010

On Thu, 2010-07-15 at 16:43 -0400, warm38 at juno.com wrote:
> I am using Cygwin under winXP.

Yikes! I'm not a windows user and have never used Cygwin, so I probably
won't be of much help on this one. Why not just run it on GNU/Linux
directly instead of using Cygwin on Windows? Seems like that would take
out an extra layer of complexity. It's easy to install if you have a
spare box around and would give you a big head start as it would already
have a working native gcc tool chain, bash, etc., so you could
concentrate on building the cross compiler instead of on making Unix
stuff work on Windows.

> This will be for a cross-comiler to build the files under cygwin.  The
> processor has NOT yet been released and they are trying to get the C
> compiler OK and be able to do REGRESSION (DejaGnu/runtest) testing as
> they make changes to the compiler.  (this is their first try)

Wow, ok, never done that either. I've only built known-good versions of
gcc for supported targets, so I never had to do regression testing on
the compiler source code itself. Just out of curiosity, what's the

Good place to start might be the FSF's GCC testing efforts page:


I believe it has links to automated regression testing tools used by the
gcc development team. They run regression tests daily on the development
source so they should have a pretty good idea of what you need to do.
They have a mailing list specifically for testing issues. I assume your
patches will eventually make it upstream to the gcc folks anyway, so
maybe they can help you with the testing.


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