Re: [PATCH] Makefile: make COMPUTE_HEADER_DEPENDENCIES=auto work with DEVOPTS=pedantic

Jeff King [off-list ref] writes:

I almost suggested using "git.c" as the dummy file, since we know it
must compile anyway. But that probably has other problems (it's more
expensive, and if it _does_ have an error, the results may be
confusing).

It's a shame we can't just try to do the _real_ compiles using the
auto-dependency stuff, and then fall back if they fail. But I think
there's a chicken-and-egg problem there with "make" doing real work, and
figuring out the dependencies to do real work.

Yeah, if compiling any of the real sources is inexpensive enough, I
would think that would be the happy way to go.  Do we have a trivial
source that almost never changes?  Perhaps version.c (especially if
we kick out two helper functions that do not really belong there)?

...
I'm happy to submit that on top, or even turn the earlier hunk into a
patch.  But let's see what Ævar has to say to what's been discussed so
far. I don't want to derail his effort.

Yup.