Add version info from git tags

scripts/get_version.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+commit=$(git rev-parse --short HEAD)
+
+# This is true if there is a tag on current HEAD
+if git describe --exact-match > /dev/null 2>&1
+then
+		tag_val=$(git describe --dirty=DIRTY --exact-match)
+		case "$tag_val" in 
+				*DIRTY)
+						echo "git=$commit-changes"
+						exit
+						;;
+				v*) # Only consider tags starting with v
+						echo "$tag_val"
+						;;
+				*)
+						echo "git-$commit"
+		esac
+else
+		tag_val=$(git describe --dirty=DIRTY)
+		case "$tag_val" in 
+				*DIRTY)
+						echo "git-$commit-changes"
+						;;
+				*)
+						echo "git-$commit"
+		esac
+fi
+