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SubjectRe: [PATCH] ARM: zImage: Skip relinking if nothing changes
On Fri, Aug 12, 2011 at 04:48:12PM -0400, Arnaud Lacombe wrote:
> You should be able to avoid the extra copy altogether by doing something ala:
>
> $(obj)/lib1funcs.o: $(srctree)/arch/arm/lib/lib1funcs.S
> $(call cmd,as_o_S)
>
> note that I also remove the $(SRCARCH), as there is no other
> `arch/*/lib/lib1funcs.S' than `arch/arm/lib/lib1funcs.S'

We tried such things, but it results in kbuild arguing over building
lib1funcs.S in arch/arm/lib and arch/arm/boot/compressed. You end up
with it rebuilding the arch/arm/lib one, followed by a rebuild of the
arch/arm/boot/compressed one.

We've ended up with what we have because its about the only way to get
kbuild to behave.


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