Re: asm-offsets.h is generated in the source tree

[Al Viro <viro@ZenIV.linux.org.uk>]

On Mon, Sep 12, 2005 at 09:15:25PM +0200, Sam Ravnborg wrote:
> Because we leave it to the build system to figure out what .h file to
> include, and thus letting the build system having full knowledge we make
> sure to recompile whatever is needed when we change subarch.
> Without the asm symlink in the kernel it would just work in many cases
> when you changed architecture.

Correct cross-toolchain would be picked by some miracle, presumably?
Both for include/asm and for include/asm-um/arch...  And after that
we win a stunning fraction of percent - some of the generated files
do _not_ depend on any target .o, so we will avoid rebuilding them.

Note that in cases when rebuild involving symlink change _is_ possible
(e.g. arm or sh subarch) we already get the right thing - change it in
.config and symlinks will be flipped.