From 2dc285b7b21e53b09a5738c8bc7ed5c1ab65d8d3 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Tue, 16 Sep 2008 22:12:48 +0200
Subject: [PATCH] add some version checking and stuff

---
 iw.c       |  2 +-
 version.sh | 16 +++++++++++-----
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/iw.c b/iw.c
index 58d58f0..bbaba4d 100644
--- a/iw.c
+++ b/iw.c
@@ -105,7 +105,7 @@ static void usage(const char *argv0)
 
 static void version(void)
 {
-	printf("iw version " VERSION IW_GIT_VERSION "\n");
+	printf("iw version " IW_VERSION "\n");
 }
 
 static int phy_lookup(char *name)
diff --git a/version.sh b/version.sh
index 9126ef2..f61b39a 100755
--- a/version.sh
+++ b/version.sh
@@ -1,17 +1,23 @@
-#!/bin/sh
+#!/bin/bash
 
 VERSION="0.9"
 
 (
-echo "#define VERSION \"$VERSION\""
 if head=`git rev-parse --verify HEAD 2>/dev/null`; then
 	git update-index --refresh --unmerged > /dev/null
-	printf "#define IW_GIT_VERSION \"-g%.8s" "$head"
+	descr=$(git describe)
+
+	# on git builds check that the version number above
+	# is correct...
+	[ "${descr/-*/}" == "v$VERSION" ] || exit 2
+	
+	echo -n '#define IW_VERSION "'
+	echo -n "${descr:1}"
 	if git diff-index --name-only HEAD | read dummy ; then
-		printf -- "-dirty"
+		echo -n "-dirty"
 	fi
 	echo '"'
 else
-	echo '#define IW_GIT_VERSION ""'
+echo "#define IW_VERSION \"$VERSION\""
 fi
 ) > version.h
-- 
2.39.2