Re: [gentoo-dev] libGLcore error

[Martin Schlemmer]

On Wed, 2002-06-05 at 23:00, Lars Pechan wrote:
> Thanks a lot but I would like to think that I have put quite a big effort into
> finding out a) why nvidia's opengl driver doesn't work and b) how to get it
> working. So have others too. I also think I have a reasonable understading of
> what is going on.
>
> For more info on the subject see these threads in the forums:
>
> http://forums.gentoo.org/viewtopic.php?t=3701
> http://forums.gentoo.org/viewtopic.php?t=3963
>
> Also the following url helps in mapping out what the issues are
> http://sources.redhat.com/ml/libc-alpha/2002-04/msg00025.html.
>
> Also, the link you are referring to is mentioned in the forum postings.
>
> In short, yes the problem stems from the gcc-team having changed the layout of
> a library by hiding certain symbols. However, it's not clear whether this
> happened for 3.1 or in fact earlier. It did work earlier because the
> linker/binutils didn't care about the .hidden attribute anyway and in fact
> still works under 3.1 depending on what version of binutils is used.
>
> To see this happening try building one system with binutils 2.12 and one with
> 2.11 _both_ using gcc-3.1. The nvidia opengl driver will work on one but not
> the other despite both having been compiled with the same compiler. That
> doesn't make it binutils' "fault" but it is clear that what version of
> binutils you use produce different end results.
>
> My concern hasn't been to find someone to put the blame on but to understand
> what is happening and how to fix it. I personally think one has to be very
> careful playing the blame game in an open source environment.
>
> I'm not suggesting it's nvidias "fault", if anything I'm grateful for them
> providing good drivers even if they are binaries. However, I am suggesting
> that nvidia have been caught unawares by the change and also that their
> library wouldn't build on my (or any other gcc-3.1 + latest binutils) system.
>
> I'm also suggesting a couple of workarounds for those who can't get opengl
> going on their new shiny 3.1-built systems. Some have (I believe) been
> successful in applying the patch to glibc but others haven't and for them
> these workarounds will do the trick.
>

Bad form on my side.  Sorry, to quick a reply after just
comming home with a long day at work behind me.  No excuse
I know.

Btw, I am almost positive it worked fine for gcc-3.0 and
binutils-2.12.


-- 

Martin Schlemmer
Gentoo Linux Developer, Desktop Team Developer
Cape Town, South Africa