build: add "+" version appendix automatically during build

For each build that has no tag name (thus for all commits except
releases), we add a "+" version appendix to indicate that it is
further than the rc tag itself, like in the kernel. Do this during
configure automatically. This is useful in case someone wants to
package a relase, so that the full version name indicates that.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/configure b/configure
index 5e24313..15b2705 100755
--- a/configure
+++ b/configure
@@ -505,6 +505,21 @@ EOF
 	fi
 }
 
+gen_version_appendix()
+{
+	local _appendix=""
+
+	git rev-parse > /dev/null 2>&1
+	if [ "$?" == "0" ] ; then
+		if [ ! "`git describe --always`" == \
+		       "`git describe --abbrev=0 --tags`" ] ; then
+			_appendix="+"
+		fi
+	fi
+
+	echo "CONFIG_RC=\"$_appendix\"" >> Config
+}
+
 gen_config_hdr()
 {
 	local _version=""
@@ -583,6 +598,7 @@ check_libcli
 check_libnet
 
 gen_config_hdr
+gen_version_appendix
 
 if [ "$MISSING_DEFS" == "1" ] ; then
 	echo "[!] Some libraries or header definitions are missing or too old."