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SubjectRe: [PATCH] get rid of the last symlink in uml build
On Wed, Dec 17, 2008 at 09:55:39AM +0100, Sam Ravnborg wrote:

> > AFAICS, having archprepare depend on user_constants.h and kern_constants.h
> > would do just fine. Note that we don't care how these two are ordered;
> > it's asm-offsets.h that can't be created without user_constants.h.
>
> Agreed.
>
> Previously we had some race issues in the arch Makefile when they used
> the prepare target and they were workaround in various ways.
> This was why we introduced archprepare in the first place IIRC.
> And I also recall that um was starnge but this is all cleaned up now - good.

FWIW, how do you plan to deal with include/asm once everything gets moved
to arch/*/include/asm?
Right now O=... builds create asm-offsets.h in $(objtree)/include/asm; do
you plan to take it to $(objtree)/arch/$(ARCH)/include/asm?

Another bloody annoying thing is dangling include2/asm on such builds, along
with include/asm-x86 created on non-O=.. ones.

If/when we stop doing that and just put asm-offsets.h into arch/*/include/asm
we'll need to update the rule for kern_constants.h to
$(SHARED_HEADERS)/kern_constants.h:
$(Q)mkdir -p $(dir $@)
$(Q)echo '#include "../asm/asm-offsets.h"' >$@
Not a big deal, just something that'll need to be taken care of when we
switch...

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