Re: [bugfix 1/1] mesa-xlib: workaround gcc 4.6.0 ICE

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Fri, 2011-05-27 at 10:30 +0100, Phil Blundell wrote:
> On Fri, 2011-05-27 at 09:54 +0100, Richard Purdie wrote:
> > Good question. I guess you're just changing the gcc version but using
> > the rest of that file?
> > 
> > This is a tricky problem as we do want to include that for anyone using
> > gcc 4.6 as otherwise things break but as you say, can't impact someone
> > using that file but changing its values.
> > 
> > I guess the solution will be to turn it into anonymous python checking
> > if we're:
> > 
> > * using gcc 4.6
> > * building for arm
> > * using armv7 optimisations
> > * building mesa-xlib
> > 
> 
> Can we not just patch gcc to fix the ice?  That seems like it would be
> the best answer.
> 
> If that's difficult for some reason, and downgrading gcc isn't an option
> either for whatever reason, then it seems like the right thing is going
> to be to get mesa-xlib's do_configure() to sort it out.
> 
> I'm not sure that anonymous python is going to work since there is no
> particularly good and reliable method of determining ahead of time what
> version of gcc is going to end up being used for the build.

I was thinking of the GCCVERSION variable which is used in that same
file and is probably a valid thing to do in this specific case.

Anyhow, it looks like we have a fix for the ICE (Nitin confirmed it
builds) which is much perferred and I'm going to wait for that,
thanks :)

Richard