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

From: Jeff King <peff@peff.net>
Date: Jun 19, 2012, 23:36 UTC
Message-ID: <20120619233659.GA6621@sigill.intra.peff.net>
In-Reply-To: <7vzk7zx9pz.fsf@alter.siamese.dyndns.org>

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

Show 11 quoted lines

> >> 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