[Qemu-devel] qemu 32 bits on AMD64

[Qemu-devel] qemu 32 bits on AMD64

[vaise]

I have read the posts about the gcc "internal compiler error: Segmentation 
fault" on x86_64. ok. I have just tried with CVS (7 feb 2005 ) . I use 
gcc-3.4.1-4mdk on Mandrake 10.1-64.
How can I tell ./configure to compile as a x86_32 program on a 64 bits 
machine ?

Re: [Qemu-devel] qemu 32 bits on AMD64

[Bob Deblier]

On Mon, 2005-03-07 at 07:41 -0500, vaise@votreservice.com wrote:
> I have read the posts about the gcc "internal compiler error: Segmentation 
> fault" on x86_64. ok. I have just tried with CVS (7 feb 2005 ) . I use 
> gcc-3.4.1-4mdk on Mandrake 10.1-64.
> How can I tell ./configure to compile as a x86_32 program on a 64 bits 
> machine ?
> 
> 
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel

Disclaimer: The following worked for me Fedora Core 3 x86_64 - I don't
use Mandrake, and this solution may not work for you.

$ linux32 /bin/bash

This should make sure that your 'arch' is recognized as i686 instead of
x86_64

$ CC="gcc -m32" LD="ld -m32" ./configure <extra-options-that-you-want>

Should set you up for compiling and linking 32-bit binaries.

$ make

Sincerely,

Bob Deblier

Re: [Qemu-devel] qemu 32 bits on AMD64

[Bob Deblier]

On Mon, 2005-03-14 at 09:43 +0000, vaise@votreservice.com wrote:
> > $ make
> /home/moi/install/qemu/cvs/qemu/target-i386/op.c:1: error: 
> -mpreferred-stack-boundary=2 is not between 4 and 12
> make[1]: *** [op.o] Error 1
> make[1]: Leaving directory `/home/moi/install/qemu/cvs/qemu/i386-user'
> make: *** [all] Error 1
> 
> Have you already seen this ?

Yes, I've run into this problem too. I had to work around that with the
following patch:

diff -p -r1.62 Makefile.target
*** Makefile.target     13 Mar 2005 16:52:10 -0000      1.62
--- Makefile.target     14 Mar 2005 09:17:00 -0000
*************** endif
*** 120,126 ****

  ifeq ($(ARCH),i386)
  CFLAGS+=-fomit-frame-pointer
! OP_CFLAGS=$(CFLAGS) -mpreferred-stack-boundary=2
  ifeq ($(HAVE_GCC3_OPTIONS),yes)
  OP_CFLAGS+= -falign-functions=0 -fno-gcse
  else
--- 120,126 ----

  ifeq ($(ARCH),i386)
  CFLAGS+=-fomit-frame-pointer
! OP_CFLAGS=$(CFLAGS) -mpreferred-stack-boundary=4
  ifeq ($(HAVE_GCC3_OPTIONS),yes)
  OP_CFLAGS+= -falign-functions=0 -fno-gcse
  else

Sincerely,

Bob Deblier

Re: [Qemu-devel] qemu 32 bits on AMD64

[vaise]

On Monday 07 March 2005 12:47 pm, Bob Deblier wrote:
> Disclaimer: The following worked for me Fedora Core 3 x86_64 - I don't
> use Mandrake, and this solution may not work for you.
>
> $ linux32 /bin/bash

=> OK
I did not know "linux32"

> This should make sure that your 'arch' is recognized as i686 instead of
> x86_64
>
> $ CC="gcc -m32" LD="ld -m32" ./configure <extra-options-that-you-want>

Install prefix    /usr/local
BIOS directory    /usr/local/share/qemu
binary directory  /usr/local/bin
Manual directory  /usr/local/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /home/ds/install/qemu/cvs/qemu
C compiler        gcc
make              make
host CPU          i386
host big endian   no
target list       i386-user arm-user armeb-user sparc-user ppc-user 
i386-softmmu ppc-softmmu sparc-softmmu x86_64-softmmu
gprof enabled     no
static build      no
SDL support       yes
SDL static link   yes
mingw32 support   no
Adlib support     no
FMOD support      no

=>OK

> Should set you up for compiling and linking 32-bit binaries.
>
> $ make
/home/moi/install/qemu/cvs/qemu/target-i386/op.c:1: error: 
-mpreferred-stack-boundary=2 is not between 4 and 12
make[1]: *** [op.o] Error 1
make[1]: Leaving directory `/home/moi/install/qemu/cvs/qemu/i386-user'
make: *** [all] Error 1

Have you already seen this ?