compiling git -85rc

compiling git -85rc

[Michael Tokarev]

For quite some time the compilation of userspace is
broken on my environment.  I'm not sure if it's new
or it was this way before -- at least kvm-84 builds
fine.

The problem happens when the kernel running is 64bits
and the userspace is 32bits.  In the source tree,
qemu/ directory correctly configures itself to use
-m32 compiler flag (the default anyway), but other
directories -- libkvm/ and user/ uses x86_64 for
$(ARCH) and hence -m64 and /lib64.  And sure thing,
the link stage does not work because -lkvm is not
compatible (32 vs 64 bits).

I had to change
  include config-$(ARCH).mak
into
  include config-i386.mak
in libkvm/Makefile and in user/Makefile to build it.

Maybe, just may be, it's sufficient to do a
  make ARCH=i386
step instead - I'll try that too.

Comments?

Thanks.

/mjt

Re: compiling git -85rc

[Avi Kivity]

Michael Tokarev wrote:
> For quite some time the compilation of userspace is
> broken on my environment.  I'm not sure if it's new
> or it was this way before -- at least kvm-84 builds
> fine.
>
> The problem happens when the kernel running is 64bits
> and the userspace is 32bits.  In the source tree,
> qemu/ directory correctly configures itself to use
> -m32 compiler flag (the default anyway), but other
> directories -- libkvm/ and user/ uses x86_64 for
> $(ARCH) and hence -m64 and /lib64.  And sure thing,
> the link stage does not work because -lkvm is not
> compatible (32 vs 64 bits).
>
> I had to change
>  include config-$(ARCH).mak
> into
>  include config-i386.mak
> in libkvm/Makefile and in user/Makefile to build it.
>
> Maybe, just may be, it's sufficient to do a
>  make ARCH=i386
> step instead - I'll try that too.
>

That's a bug, I'll fix it up.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.