[PATCH] Derive version numbers from git

[Michal Sojka <sojkam1@fel.cvut.cz>]

On Tue, 06 Apr 2010, Carl Worth wrote:
> In trying to get notmuch to grow up a little bit, I've just added a
> version number (0.1 initially) and have started doing releases. My idea
> for now is to have 2-part versions for releases, and 3-part versions to
> indicate intermediate states within git.

Hi Carl,

first of all, thank you very much for the first release. I think, that
0.1 is good number to start with, but I do not like manual numbering of
intermediate states. Please, consider applying the following patch.

-Michal

----- >8 ---- >8 -----
I often have several versions of notmuch compiled and it would be very
helpful to be able to distinguish between them. Git has a very nice
feature to make intermediate numbering automatic and unambiguous so
let's use it here.

For tagged versions, the version is the name of the tag, for
intermediate versions, the unique ID of the commit is appended to the
tag name.

diff --git a/Makefile.local b/Makefile.local
index 74f0f86..890f78a 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -7,11 +7,10 @@
 # digit when we reach particularly major milestones of usability.
 #
 # Between releases, (such as when compiling notmuch from the git
-# repository), we add a third digit, (0.1.1, 0.1.2, etc.), and
-# increment it occasionally, (such as after a big batch of commits are
-# merged.
+# repository), we let git to append identification of the actual
+# commit.
 PACKAGE=notmuch
-VERSION=0.1.1
+VERSION:=$(shell git describe --dirty)
 
 RELEASE_HOST=notmuchmail.org
 RELEASE_DIR=/srv/notmuchmail.org/www/releases