[Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Paul Jakma]

Hi,

I get the following error trying to run qemu compiled with SDL 
support:

./i386-softmmu/qemu: relocation error: ./i386-softmmu/qemu: symbol 
__libc_sigaction, version GLIBC_PRIVATE not defined in file libc.so.6 
with link time reference

This is on FC2 x86_64. AFAICT. Judging by posts like:

 	http://sources.redhat.com/ml/libc-hacker/2004-05/msg00001.html

The glibc folks are rather keen to not have GLIBC_PRIVATE symbols be 
used outside of libc ;) (that patch doesnt remove __libc_sigaction 
AFAICT, but I guess it's been removed since then.

Is there any workaround for this? (other than not using SDL support).

regards,
-- 
Paul Jakma	paul@clubi.ie	paul@jakma.org	Key ID: 64A2FF6A
 	warning: do not ever send email to spam@dishone.st
Fortune:
All of the animals except man know that the principal business of life is
to enjoy it.

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Paul Jakma]

On Wed, 14 Jul 2004, Hetz Ben Hamo wrote:

> Do: LD_ASSUME_KERNEL=2.2.5 qemu <and the qemu parameters>

Hmm, that doesnt work:

  LD_ASSUME_KERNEL=2.2.5 ./i386-softmmu/qemu -hda /mnt/s10/hda.img -hdb /mnt/s10/hdb.img -m 256
./i386-softmmu/qemu: error while loading shared libraries: libm.so.6: 
cannot open shared object file: No such file or directory

What I have done is just to remove the sigaction stuff from vl.c, as 
I found a post to the list (via google) which suggested that this 
libc abuse is only needed for old libc's (linuxthreads?). If I do 
that qemu works, I get a window popped up, it stays black and after a 
while qemu segfaults. Thing is, qemu also segfaults if i compile 
without SDL support.

This is on x86-64. Is qemu known to work on 64bit systems? I noticed 
quite a few integer<->pointer warnings when compiling qemu..

> Thanks,
> Hetz

regards,
-- 
Paul Jakma	paul@clubi.ie	paul@jakma.org	Key ID: 64A2FF6A
 	warning: do not ever send email to spam@dishone.st
Fortune:
It's great to be smart 'cause then you know stuff.

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Jocelyn Mayer]

On Tue, 2004-07-13 at 13:27, Paul Jakma wrote:
> On Wed, 14 Jul 2004, Hetz Ben Hamo wrote:
> 
> > Do: LD_ASSUME_KERNEL=2.2.5 qemu <and the qemu parameters>
> 
> Hmm, that doesnt work:
> 
>   LD_ASSUME_KERNEL=2.2.5 ./i386-softmmu/qemu -hda /mnt/s10/hda.img -hdb /mnt/s10/hdb.img -m 256
> ./i386-softmmu/qemu: error while loading shared libraries: libm.so.6: 
> cannot open shared object file: No such file or directory
> 
> What I have done is just to remove the sigaction stuff from vl.c, as 
> I found a post to the list (via google) which suggested that this 
> libc abuse is only needed for old libc's (linuxthreads?). If I do 
> that qemu works, I get a window popped up, it stays black and after a 
> while qemu segfaults. Thing is, qemu also segfaults if i compile 
> without SDL support.
> 
> This is on x86-64. Is qemu known to work on 64bit systems? I noticed 
> quite a few integer<->pointer warnings when compiling qemu..

I don't use qemu pc emulation a lot, but qemu-ppc runs fine on my
x86_64, with a Gentoo distrib, using Linux kernel 2.6.
I had some issues with PC emulation last time I tried it:
the BIOS seemed to start to execute then freezed.
But it's been quite a long time ago...
I'll retry and tell here if it's better now.

-- 
Jocelyn Mayer <l_indien@magic.fr>
Never organized

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Paul Jakma]

On Tue, 13 Jul 2004, Paul Jakma wrote:

> This is on x86-64. Is qemu known to work on 64bit systems? I 
> noticed quite a few integer<->pointer warnings when compiling 
> qemu..

Well, qemu i386 actually works, yay!

However, Solaris (the OS I'm trying to run), hangs before booting the 
kernel. I'm running 0.5.5, and i notice the 0.6.0 changelog mentions 
a solaris related fix.

Question is, how do i get the qemu configure script to pass -m32 to 
gcc? I've tried --extra-cflags, export CFLAGS, etc, but nothing seems 
to work. (config-host.mak has CFLAGS=-m32).

regards,
-- 
Paul Jakma	paul@clubi.ie	paul@jakma.org	Key ID: 64A2FF6A
 	warning: do not ever send email to spam@dishone.st
Fortune:
Riches cover a multitude of woes.
 		-- Menander

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Frederic Bezies]

Le 07/13/2004 02:53 PM,  Paul Jakma a écrit :

> On Tue, 13 Jul 2004, Paul Jakma wrote:
> 
>> This is on x86-64. Is qemu known to work on 64bit systems? I noticed 
>> quite a few integer<->pointer warnings when compiling qemu..
> 
> 
> Well, qemu i386 actually works, yay!

Of course it works ;)

> 
> However, Solaris (the OS I'm trying to run), hangs before booting the 
> kernel. I'm running 0.5.5, and i notice the 0.6.0 changelog mentions a 
> solaris related fix.

Well, can we download for free a version of solaris x86 ? ;p

> 
> Question is, how do i get the qemu configure script to pass -m32 to gcc? 
> I've tried --extra-cflags, export CFLAGS, etc, but nothing seems to 
> work. (config-host.mak has CFLAGS=-m32).
> 
> regards,

I got the same error when trying to launch an homemade build of qemu on 
my linux Fedora Core 2...

-- 
Frédéric Béziès - mozjf@alussinan.org

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Hetz Ben Hamo]

> Well, can we download for free a version of solaris x86 ? ;p

Yup, available freely from Sun.

See: 
http://survey.sun.com/servlet/viewsflash?cmd=showform&pollid=Red%21sol9_x86_download

> I got the same error when trying to launch an homemade build of qemu on
> my linux Fedora Core 2...

I use the LD_ASSUME_KERNEL=2.2.5 trick and it seems to work fine. All I added 
was an alias..

Thanks,
Hetz

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Martin Garton]

On 13 Jul 2004, Jocelyn Mayer wrote:

> > This is on x86-64. Is qemu known to work on 64bit systems? I noticed 
> > quite a few integer<->pointer warnings when compiling qemu..
> 
> I don't use qemu pc emulation a lot, but qemu-ppc runs fine on my
> x86_64, with a Gentoo distrib, using Linux kernel 2.6.
> I had some issues with PC emulation last time I tried it:
> the BIOS seemed to start to execute then freezed.
> But it's been quite a long time ago...
> I'll retry and tell here if it's better now.

It still does that for me. I'm using gentoo on amd64 also. I have had to 
so a static 32 bit compile and use that for now. (I tried to understand 
the problem, but qemu is a bit beyond my knowledge)

-- 
Martin.

Re: [Qemu-devel] SDL, GLIBC_PRIVATE error for __libc_sigaction

[Hetz Ben Hamo]

Do: LD_ASSUME_KERNEL=2.2.5 qemu <and the qemu parameters>

Thanks,
Hetz

Paul Jakma wrote:
> Hi,
> 
> I get the following error trying to run qemu compiled with SDL support:
> 
> ./i386-softmmu/qemu: relocation error: ./i386-softmmu/qemu: symbol 
> __libc_sigaction, version GLIBC_PRIVATE not defined in file libc.so.6 
> with link time reference
> 
> This is on FC2 x86_64. AFAICT. Judging by posts like:
> 
>     http://sources.redhat.com/ml/libc-hacker/2004-05/msg00001.html
> 
> The glibc folks are rather keen to not have GLIBC_PRIVATE symbols be 
> used outside of libc ;) (that patch doesnt remove __libc_sigaction 
> AFAICT, but I guess it's been removed since then.
> 
> Is there any workaround for this? (other than not using SDL support).
> 
> regards,