Re: [PATCH 3/3] Makefile: split prefix flags from GIT-CFLAGS

On Tue, Jun 19, 2012 at 02:39:20PM -0700, Junio C Hamano wrote:

quoted

quoted

I have to wonder if is this something we care about that much.

It does speed up my build a fair bit, but I admit I have a somewhat
uncommon setup.

Oh, I wouldn't question the "speeding up" part.  I simply expected
that people who use separate prefix depending on branch would have
separate checkout for these branches they build and install
regularly to their own prefixes, so recompilation due to prefix
change would not be an issue, because by definition in such a set-up
you won't change branch in a checkout.

I dunno if other people do that. For me, separate checkouts would be
overkill. I use a single working tree, and I don't mind switching
between topic branches, but I want to keep installed versions from
polluting each other (e.g., via cruft left in the exec-path or in
templates), which has caused oddness with testing in the past.

It's also nice that I can do:

  $ git checkout v1.7.10.5
  $ make install

and now I need only point my PATH to $HOME/local/git/v1.7.10.5/bin
to test that version forever. It saves lots of compile time when I'm
investigating bug reports.

Of course, I am probably one of the few people in the world who actually
wants to have 50 built versions of git on hand.

-Peff