[PATCH 1/1] building from git: use --abbrev=7 for version string

[Tomi Ollila <tomi.ollila@iki.fi>]

Users may have set core.abbrev=n, where n != 7 in their git config
file(s) which would give them different than expected version strings
when building notmuch from git. This fixes the commit hash part of
version string to 7 hexadecimal values.
---

tested with:
git config core.abbrev 12
git describe
rm version.stamp
make
cat version.stamp
git reset --hard origin/master
make
cat version.stamp

.local | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.local b/Makefile.local
index 877a979..6e78368 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -21,7 +21,7 @@ endif
 VERSION:=$(shell cat ${srcdir}/version)
 ifeq ($(filter release release-message pre-release update-versions,$(MAKECMDGOALS)),)
 ifeq ($(IS_GIT),yes)
-VERSION:=$(shell git describe --match '[0-9.]*'|sed -e s/_/~/ -e s/-/+/ -e s/-/~/)
+VERSION:=$(shell git describe --abbrev=7 --match '[0-9.]*'|sed -e s/_/~/ -e s/-/+/ -e s/-/~/)
 # Write the file 'version.stamp' in case its contents differ from $(VERSION)
 FILE_VERSION:=$(shell test -f version.stamp && read vs < version.stamp || vs=; echo $$vs)
 ifneq ($(FILE_VERSION),$(VERSION))
-- 
1.9.0