Re: Fwd: how to compile kvm 64 bit

[Hollis Blanchard <hollisb@us.ibm.com>]

On Fri, 2008-12-05 at 09:27 +0100, paolo pedaletti wrote:
> Ciao Malinka,
> 
> > your -mcpu=i686 specifically tells gcc to compile for 32-bit cpu you
> > need to use something like
> > -march=k8 or -mtune=k8 usually
> 
> ok, I can understand it, but I thought that it was enough to run
> ./compile
> to obtain the correct Makefile with the right cpu-option
> 
> >> root@kvm1:/usr/src/kvm-79# ./configure
> >> Source path       /usr/src/kvm-79/qemu
> >> C compiler        gcc
> >> Host C compiler   gcc
> >> ARCH_CFLAGS       -m64
> >> make              make
> >> install           install
> >> host CPU          x86_64
> >> host big endian   no
> >> target list       x86_64-softmmu
> 
> so ./compile detect the right cpu/options

This output is from qemu's configure script, so applies only within the
qemu directory, and you seem to be having trouble with libkvm.

> >> root@kvm1:/usr/src/kvm-79# make
> >> make -C libkvm
> >> make[1]: Entering directory `/usr/src/kvm-79/libkvm'
> >> gcc -march=i686    -mcpu=i686    -malign-functions=4 -O2 -m64
> >> -D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
> >> -fno-stack-protector   -I /usr/src/kvm-79/kernel/include   -c -o
> >> libkvm-x86.o libkvm-x86.c
> 
> but the Makefile is wrong

I don't see arch=, cpu=, nor i686 anywhere in the libkvm build scripts.
Could you have a shell alias or some other strangeness on your system
that is adding those i686 options?

-- 
Hollis Blanchard
IBM Linux Technology Center