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SubjectRe: [regressions] Re: kbuild: save ARCH & CROSS_COMPILE when building a kernel

* Peter Zijlstra <peterz@infradead.org> wrote:

> On Sat, 2009-10-03 at 12:34 +0200, Ingo Molnar wrote:
> >
> > that arch-cache thing introduced in:
> >
> > 5755433: kbuild: save ARCH & CROSS_COMPILE when building a kernel
> >
> > isnt working very well in my experience.
>
> Its breaking things for me too. When I build a .config using distcc
> and cross compilers on my build farm, and then try a make install on
> another machine which doesn't have either it utterly shits itself.
>
> Please revert this.

I'm hitting problems with this several times a day.

I'm used to switching from 32-bit to 64-bit x86 kernels and now i have
to via the extra 'make mrproper' and that's quite annoying as i already
tell kbuild that i want a 64-bit config via:

make ARCH=x86_64 defconfig

Why the extra forced step?

Also, there's things that need even more steps: i often take a config
that triggers a breakage on 32-bit and change it to 64-bit via 'make
oldconfig' - to see whether the bug is bitness invariant. I have to do
something like:

mv .config .config.tmp
make mrproper
mv .config.tmp .config
make ARCH=x86_64 oldconfig

This doesnt look right at all.

Ingo


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