Re: glfw - x11 and opengl

[Rich Felker <dalias@libc.org>]

On Mon, Jul 07, 2014 at 07:38:26PM -0500, Rob Landley wrote:
> On 07/03/14 22:25, Rich Felker wrote:
> > On Thu, Jul 03, 2014 at 09:40:10PM -0500, Samuel Holland wrote:
> >> On Fri, 2014-07-04 at 01:14 +0100, Laurent Bercot wrote:
> >>> On 03/07/2014 22:22, Carlos Breviglieri wrote:
> >>>> I also keep an eye on aboriginal linux for other architectures testings,
> >>>> which, just now, announced basic musl compatibility... sweet.
> >>>
> >>>   Where did you see that announcement ? I can see nothing on landley.net.
> >>> I've been waiting for the Aboriginal native musl toolchains for a while
> >>> and chafing at the bit. It would be sweet if they were finally ready.
> >>> (Rob, can you confirm/deny ?)
> >>>
> >>
> >> http://lists.landley.net/pipermail/aboriginal-landley.net/2014-July/001399.html
> > 
> > Has anyone had a chance to look at this yet? It would be nice if
> > someone with experience with distros/building could help check for
> > common breakage/pitfalls. I know Aboriginal is using a much older
> > toolchain than most musl users, so that might also have some new
> > issues that others haven't encountered. I suspect there might still be
> > issues with libgcc.a symbol visibility that would result in broken
> > binaries when dynamic linking against musl; this should be easy to
> > check.
> 
> Dynamic linking is indeed broken. Haven't tracked down why yet.
> (hello-dynamic works on i686, segfaults on mips.)

Is it only mips that's segfaulting, or other archs too? I'm guessing
it's either an issue with your toolchain, or perhaps the mips
relocation regression in 1.1.3 that's fixed in master -- it was
announced here on the list.

> > BTW regarding the libgcc.a issue, since it seems to be common in
> > bootstrapping, it might be worth working around it in the musl build
> > process by using -Wl,--exclude-libs,libgcc.a if this option is
> > supported by the linker.
> 
> Which libgcc.a issue? I hit a couple different ones, but I think they're
> fixed now?

Any libgcc-namespace symbols (like __udivdi3) getting exported from
musl libc.so. This command should show some of them if they're
present:

nm -D lib/libc.so | grep __.*div

Rich