[Qemu-devel] Re: Problem compiling with gcc 3.3 on 2.6.14 (Debian)

[Emmanuel Charpentier]

Jim C. Brown wrote:
> On Mon, Nov 28, 2005 at 09:46:02AM +0100, Emmanuel Charpentier wrote:
>
> > Dear List,
> >
> > I recently upgraded to Linux 2.6.14 (as compiled as a 686 Debian 
> > package), and found that this distribution, too, has switched to GCC 4 
> > for kernel.
> >
> > I tried to recompile a plain vanilla qemu 0.7.2 tarball : I switched to 
> > gcc 3.3 for this (in /usr/bin : ln -sf gcc-3.3 gcc ; ln -sf gccbug-3.3 
> > gccbug ; ln -sf cpp-3.3 cpp ), planning to switch back to GCC 4 for 
> > recompilation of the kqemu subdirectory. This failed.
>
>
> Strange. Haven't heard of this one before.
>
> Compiling the kqemu module should use the same compiler that the kernel uses
> anyways. It doesn't use the same one that qemu uses, but the one in the kernel's
> Makefile.

I knew that ; that's whi I switched back to gcc 3.3 for compilation of 
the main package, planning to go back to GCC 4 for kqemu. but comiling 
this one needs a correctly configured qemu tree.

> I also notice that your error seems to be with qemu-i386. This binary doesn't 
> use
> kqemu at all, so either don't use kqemu (if all you care about is i386-user) or
> compile i386-softmmu only (if you want to use kqemu and don't care aboui 
> i386-user).

I''l try that. But the point isn't here. That's the first time I saw 
such a problem with qemu. Since what has changed is the kernel (and 
probably parts of the compilation system, BTW : Debian instable is ... 
well ... somewhat unstable...)

> It is hard to make out the problem when the error messages aren't in english, 
> btw.

OK : I'll translate the error messages :

All is fine and dandy up to the "compilation" (linking, in fact) of 
qemu-i386 :
> gcc -g -Wl,-shared -o qemu-i386 elfload.o main.o syscall.o mmap.o
> signal.o path.o osdep.o thunk.o vm86.o libqemu.a gdbstub.o   -lm > 
/usr/bin/ld: section .note.ABI-tag [0000000000000468 ->
> 0000000000000487] chevauche la section .hash [0000000000000114 ->
> 00000000000027d3]
> /usr/bin/ld: qemu-i386: Not enough room for program headers 
(allocated > 8, need 9)
> /usr/bin/ld: édition de lien finale en échec: Mauvaise valeur
/usr/bin/ld: final linking failed: bad value
> collect2: ld a retourné 1 code d'état d'exécution
collect2 returned 1 return value
> make[1]: *** [qemu-i386] Erreur 1
> make[1]: *** [qemu-i386] Error 1
> make[1]: Leaving directory
> `/home/charpent/qemu-source/qemu-0.7.2/i386-user'
> make: *** [all] Erreur 1
make: *** [all] Error 1

Hoping this helps...

                                        Emmanuel Charpentier