file(1) broken on sparc64
kris at obsecurity.org
Tue Feb 15 18:09:26 GMT 2005
On Tue, Feb 15, 2005 at 08:58:53AM -0800, David O'Brien wrote:
> On Tue, Feb 15, 2005 at 07:28:04AM -0800, Kris Kennaway wrote:
> > On Tue, Feb 15, 2005 at 03:37:28PM +0100, Koop Mast wrote:
> > > >I wonder if the problem is with worlds cross-built from i386.
> > > >Can you try a buildworld on i386 with TARGET_ARCH=sparc64 and see if
> > > >it still works?
> > >
> > > I did a cross buildworld on a i386 machine, and copied the resulting
> > > file binary over to my sparc box. It works just like the native file
> > > binary. I even replaced libc.so.6 with the one from the cross build. But
> > > that also didn't change anything.
> > The problem turns out to be a mis-compiled /usr/share/misc/magic.mgc.
> > If you remove it (it is only used for runtime optimization), file(1)
> > works fine. If you recreate it natively using file -C, it also works.
> Are all the file(1) problems you've mentioned only occurring for
> cross-arch builds?
Yes, as mentioned above.
> If this is the case, we can disable building magic.mgc if
> TARGET_ARCH != MACHINE_ARCH.
Or figure out what changed with the last import to break it.
> > AFAIK, the underlying reason hasn't been tracked down.
> To date we've never guaranteed that a cross-arch built world is usable.
> We only officially support cross-arch compiles for compile testing. There
> are other things in the tree that aren't size & endian-clean that prevent
> usable cross-arch release builds.
Release builds, yes. Cross-built worlds have previously worked, and I
use them exclusively for non-i386 package builds.
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