build: rewrite mkversion.sh to use git metadata (#239)

The current build/mkversion.sh still expected an SVN repository layout,
rewrite it to derive tags and branchnames from git metadata.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 21 insertions, 5 deletions

diff --git a/build/mkversion.sh b/build/mkversion.sh
index afb34b415..3680008df 100755
--- a/build/mkversion.sh
+++ b/build/mkversion.sh
@@ -1,10 +1,26 @@
 #!/bin/sh
-if [ "${4%%/*}" = "branches" ]; then
-	variant="LuCI ${4##*[-/]} Branch"
-elif [ "${4%%/*}" = "tags" ]; then
-	variant="LuCI ${4##*[-/]} Release"
+
+if svn info >/dev/null 2>/dev/null; then
+	if [ "${4%%/*}" = "branches" ]; then
+		variant="LuCI ${4##*[-/]} Branch"
+	elif [ "${4%%/*}" = "tags" ]; then
+		variant="LuCI ${4##*[-/]} Release"
+	else
+		variant="LuCI Trunk"
+	fi
+elif git status >/dev/null 2>/dev/null; then
+	tag="$(git describe --tags 2>/dev/null)"
+	branch="$(git symbolic-ref --short -q HEAD 2>/dev/null)"
+
+	if [ -n "$tag" ]; then
+		variant="LuCI $tag Release"
+	elif [ "$branch" != "master" ]; then
+		variant="LuCI ${branch##*-} Branch"
+	else
+		variant="LuCI Master"
+	fi
 else
-	variant="LuCI Trunk"
+	variant="LuCI"
 fi
 
 cat <<EOF > $1