On Sun, Feb 03, 2013 at 11:13:00PM -0800, Junio C Hamano wrote:

> Yeah, that result is understandable, as .depend/*.o.d files will not
> be rebuilt when the rules to build them changes in the Makefile.
> Applying the patch to the Makefile in the pristine old tree, run the
> build (which will generate .depend/*.o.d files with the corrected
> rules), then checking out the new tree and running the build again
> without "make clean", with or with the patch applied, would validate
> that the patch fixes the issue for old ccache.
> Thanks Jonathan for diagnosing, fixing, and thanks Jongman for
> testing.

Do we want to do anything with the other dependency hole I found here:


It's definitely a potential problem, but I don't think we have any
reports of it happening in practice, so it might not be worth worrying
about. Doing a clean version of the fix here:


would probably involve reorganizing our .depend directory structure,
unless somebody can cook up some clever use of make's patsubst.

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