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[Qemu-devel] Re: Problems encountered while building qemu-0.6.1
From: |
Peter S. Mazinger |
Subject: |
[Qemu-devel] Re: Problems encountered while building qemu-0.6.1 |
Date: |
Tue, 22 Feb 2005 12:21:33 +0100 (CET) |
On Sun, 20 Feb 2005, Peter S. Mazinger wrote:
I have attached 2 patches showing what is needed (and commented the
errors) building w/ gcc-3.3.5 and gcc-3.4.3 (the only diff is building
op_helper.o fails w/ gcc-3.3.5)
I can help w/ the ssp (stack-protector) tests, if noone has such gcc, the
-fno-pic failure can be easily "simulated" replacing -fno-pic with -fPIC.
The tests were done w/ latest cvs (20050221)
The attached patches allow building qemu, but do not remove the text
relocations (probably produced by using -fno-pic)
Peter
> On Sun, 20 Feb 2005, Peter S. Mazinger wrote:
>
> for current cvs almost everything applies, some changes though.
>
> > Hello!
> >
> > 1. CFLAGS/LDFLAGS from config-host.mak are overwritten/ignored
> > 2. VL_LDFLAGS/OP_CFLAGS should also "inherit" from config-host.mak
> > 3. Trying to build qemu in an environment, where gcc defaults to -fPIC
> > fails building op.o/osdep.o/helper.o.
>
> only op.o/helper.o fail.
>
> > If I disable -fPIC on the complete build, the resulting qemu-* files
> > contain text relocations (readelf -d <file>). Due to the fact that they
> > are like shared libs, the text relocs should not be present.
> > 4. The files qemu-* (user and sofmmu) are created w/ LDFLAGS=-Wl,-shared
> > creting ET_DYN/PIE executables. gcc-3.4 and binutils-2.15 support gcc
> > -pie/ld -pie, this can be checked by gcc -fpie and ld --help | grep pie
> > 5. building qemu w/ a propolice/ssp patched gcc, op.o creation fails if
> > -fstack-protector-all is enabled.
>
> if op.o is built w/ -fstack-protector, it fails creating op.h
>
> >
> > Please CC to me, I am not subscribed, thanks.
> >
> > Peter
> >
> >
>
>
--
Peter S. Mazinger <ps dot m at gmx dot net> ID: 0xA5F059F2
Key fingerprint = 92A4 31E1 56BC 3D5A 2D08 BB6E C389 975E A5F0 59F2
qemu-0.6.1-cvs-gcc-3.4.3-hardened.patch
Description: Text document
qemu-0.6.1-cvs-gcc-3.3.5-hardened.patch
Description: Text document