Makefile: use git-describe to mark the git version.

[git.git] / GIT-VERSION-GEN

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
new file mode 100755 (executable)
index 0000000..196402c
--- /dev/null
+++ b/GIT-VERSION-GEN
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+GVF=GIT-VERSION-FILE
+
+VN=$(git describe --abbrev=4 HEAD 2>/dev/null) || VN=v1.0.GIT
+VN=$(expr "$VN" : v'\(.*\)')
+if test -r $GVF
+then
+       VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)
+else
+       VC=unset
+fi
+test "$VN" = "$VC" || {
+       echo >&2 "GIT_VERSION = $VN"
+       echo "GIT_VERSION = $VN" >$GVF
+}
+
+