[Ltib] When generating kernel patch, ARCH not correctly specified

[Robert Foerster]

Hi
  When generating a patch via patchmerge, the ltib script runs a 
'make distclean'.
A blind 'make distclean' doesn't seem to properly clean the kernel. 
The top level
Makefile in the kernel source calls 'uname -m' to determine the 
target architecture
if ARCH isn't present as an environment variable or passed into the 
make invocation.
As a result, generated symlinks and headers for the real architecture 
aren't being
cleaned properly.

For example, I'm building an arm target, and generated files in 
linux/arch/arm and
linux/includes/asm-arm aren't being removed.  Running 'make -p -d distclean'
(under the ltib shell) confirms that the makefile is choosing my host 
PC arch instead
of my target arch.

Has anybody seen this same behavior, and/or is there a known workaround?  I can
manually do 'make ARCH=arm clean' before I run patchmerge, but this 
is not ideal.

Thanks,
Bob