Libav 0.7 FTBFS on mipsel: Error: opcode not supported on this processor: mips2 (mips2) `ldl $2, 7($13)'

[Kurt Roeckx]

On Sat, Jul 23, 2011 at 10:44:22PM +0200, Aurelien Jarno wrote:
> On Wed, Jul 20, 2011 at 08:52:45PM +0200, Philipp Kern wrote:
> > [ mips* buildds Cc'ed ]
> > 
> > On Tue, Jul 19, 2011 at 09:58:34PM +0200, David Kuehling wrote:
> > > The complete userspace *is* o32, just the kernel is not.  I think that
> > > is a pretty valid way to run a system, compiling the kernel for mips64
> > > gives better performance on those machines that can run mips64 code.
> > > 
> > > A mips64 kernel can run 32 and 64-bit architecture binaries, and has to
> > > pick one description when asked via 'uname -m'.  The 'setarch' tool can
> > > be used to configure which architecture that is.
> > > 
> > > I.e. athough my machine usually returns 'mips64' on 'uname -m', after
> > > running, 'setarch mips' it returns just 'mips'.  Maybe that'd be a a
> > > cleaner way to fix the problem for all package builds?
> > 
> > I think that's a misconfiguration of the buildds.  They're supposed to
> > put linux32 into the schroot configuration if the kernel arch differs
> > from the userspace arch, to get the right entry into uname.
> 
> It should be fixed right now, but it would be nice to have that in
> create-chroot.sh as otherwise we might forget next time we create a
> chroot or setup a machine.

It at least does the right thing on the i386 buildds.  Maybe the
chroot was older?


Kurt