From: Thomas Orgis <thomas-forum@orgis.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Latest SVN fails to build on Fedora Core 6 (same with 0.9.0)
Date: Sat, 17 Mar 2007 14:37:30 +0100 [thread overview]
Message-ID: <20070317143730.1befbf94@neuling> (raw)
I'd like to add that with qemu 0.9.0 release it's the same problem,
that somehow seems to recurr from time to time (seen old similar
reports with older qemu release(s)) in helper.c.
We at SourceMage GNU/Linux got reports of failed builds with that error
that are apparently fixed by reducing -march cflag to pentium-mmx as
opposed to pentium2,3,4 or pentium-m as well as any athlon.
Any sse flags also seem to trigger this error.
qemu 0.8.6 built without probs with -march=pentium-m, for example (we
still use the same compiler gcc-3.4.6 for this).
There's a thread on the user forum, too:
http://qemu-forum.ipi.fi/viewtopic.php?p=10045#10045
Is there actually some policy on CFLAGS settings? I didn't find a FAQ
like "do not set any -march other than the most basic, qemu performance
is ruled by hand-crafted assembler anyway and -msse won't also not
help anything" .. should there be one?
I guess there is something hand-crafted fighting with gcc over
registers...
Thomas.
next reply other threads:[~2007-03-17 13:37 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-17 13:37 Thomas Orgis [this message]
2007-03-18 4:45 ` [Qemu-devel] Latest SVN fails to build on Fedora Core 6 (same with 0.9.0) Tony Nelson
2007-03-18 8:37 ` Thomas Orgis
2007-03-18 9:18 ` Nigel Horne
2007-03-22 19:46 ` [Qemu-devel] 0.9.0 and svn don't build with -march=pentium2 etc.; was: " Thomas Orgis
2007-03-22 20:13 ` Sunil Amitkumar Janki
2007-03-23 9:58 ` Thomas Orgis
2007-03-23 10:21 ` Sunil Amitkumar Janki
2007-03-23 15:45 ` Paul Brook
2007-03-23 20:11 ` Thomas Orgis
2007-03-24 12:32 ` Sunil Amitkumar Janki
2007-03-24 12:55 ` Julian Seward
2007-03-26 9:34 ` Thomas Orgis
2007-03-28 19:56 ` Rob Landley
2007-03-29 10:55 ` Thomas Orgis
2007-03-29 14:55 ` [Qemu-devel] QEMU Alpha target Stuart Brady
2007-03-29 15:08 ` Paul Brook
2007-03-29 15:12 ` Stuart Brady
2007-03-29 15:25 ` Paul Brook
2007-03-29 21:01 ` J. Mayer
2007-03-29 15:25 ` [Qemu-devel] 0.9.0 and svn don't build with -march=pentium2 etc.; was: Latest SVN fails to build on Fedora Core 6 (same with 0.9.0) Sunil Amitkumar Janki
2007-03-29 16:08 ` Stuart Brady
2007-03-29 19:57 ` J. Mayer
2007-03-29 20:04 ` Brian Wheeler
2007-03-29 21:18 ` [Qemu-devel] QEMU Alpha target Stuart Brady
2007-03-29 21:31 ` J. Mayer
2007-03-29 21:57 ` Stuart Brady
2007-03-29 21:48 ` Thomas Orgis
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