[PATCH] kexec-tools: don't include every archs Makefile

[Simon Horman]

On Wed, May 05, 2010 at 11:51:10AM +1000, Michael Neuling wrote:
> This patches changes the kexec/Makefile to only include the required
> arch Makefile.  
> 
> Including all arch Makefiles causes unexpected results as changing one
> archs Makefile effects all other archs.
> 
> ppc64 recently broke surprisingly because
> 6adc05c6e3fdbc8b9f5d915af78ca05d0a09cb17 "some kexec MIPS
> improvements" added "CFLAGS +=-Wall -Werror" to
> kexec/arch/mips/Makefile.  This shouldn't happen.
> 
> Signed-off-by: Michael Neuling <mikey at neuling.org>
> ---
> Horms: Tested by compiling on x86 and ppc64, but probably needs
> testing on other archs before being committed.

Unfortunately this breaks make tarball - only kexec/arch/$ARCH is
included in the tarball.

Perhaps we could introduce $(ARCH)_FLAGS, which I think is
consistent with the handling of other variables by the kexec build.