Re: [Mesa3d-dev] Re: [Xpert]mesa assuming glibc 2.2? (Cannot compile 4.1 on RedHat 6.2)

[Sven M. H. <pe...@gm...>]

On Tue, Jun 05, 2001 at 08:47:07AM -0600, Brian Paul wrote:
> Chaskiel M Grundman wrote:
> > 
> > Around line 90 of xc/extras/Mesa/src/X86/common_x86.c
> > #if defined(__linux__) && defined(_POSIX_SOURCE)
> > [...]
> > static void sigfpe_handler( int signal, struct sigcontext sc )
> > {
> >    message( "SIGFPE, " );
> > 
> >    if ( sc.fpstate->magic != 0xffff ) {
> > 
> > fpstate.magic is not defined in asm/sigcontext.h on my RedHat 6.2 box
> > (which has a stock 2.2.19 kernel, not the redhat one). It is defined in
> > the linux 2.4.5 asm/sigcontext.h, and I'm assuming the reason this is
> > working for most people is that glibc 2.2's bits/sigcontext.h defines
> > these things itself rather than deferring to the kernel headers.
> > Something ought to be done about this, I think.
> > 
> > For my own purposes, I'm just going to disable SSE support entirely...
> 
> 
> If anyone knows a solution to this I'd like to hear it.

As far as autoconf is concerned, a simple test case will find out whether
fpstate.magic is defined. The code would use an #ifdef. The usual way, really.

Sven

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