diff --git a/src/build-brutus.sh b/src/build-brutus.sh
index 34fce5b..bd26490 100755
--- a/src/build-brutus.sh
+++ b/src/build-brutus.sh
@@ -7,6 +7,9 @@ echo "  module load cmake"
 echo "  module load gcc"
 echo
 
+# Store version number in version.h
+./describe-version.py
+
 # Default flags
 CMFLAGS="-D CMAKE_BUILD_TYPE:STRING=Release"
 
diff --git a/src/build-debug.sh b/src/build-debug.sh
index 69ede6f..11632ff 100755
--- a/src/build-debug.sh
+++ b/src/build-debug.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# Store version number in version.h
+./describe-version.py
+
 # Default flags
 CMFLAGS="-D CMAKE_BUILD_TYPE:STRING=Debug"
 
diff --git a/src/build.sh b/src/build.sh
index c68c94e..77d6981 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -1,5 +1,9 @@
 #!/bin/sh
 
+# Store version number in version.h
+./describe-version.py
+
+# Different choice if on Darwin
 PLATFORM=`uname`
 echo $PLATFORM
 if [ "$PLATFORM" = "Darwin" ]
@@ -8,6 +12,7 @@ then
 else
 	if [ "$PLATFORM" = "Linux" ]
 	then
+		# Build both versions
 		./subbuild-unix-both.sh
 	else
 		echo "I don't know platform $PLATFORM, so I won't do anything"
diff --git a/src/describe-version.py b/src/describe-version.py
new file mode 100755
index 0000000..cb68042
--- /dev/null
+++ b/src/describe-version.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+"""
+  Scyther : An automatic verifier for security protocols.
+  Copyright (C) 2007-2012 Cas Cremers
+  
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version 2
+  of the License, or (at your option) any later version.
+  
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+  
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+"""
+
+def writeTag(tag=None):
+    """
+    Write tag file
+    """
+    if tag == None:
+        tag = "unknown"
+    fp = open('version.h','w')
+    s = "#define TAGVERSION \"%s\"\n" % tag
+    fp.write(s)
+    fp.close()
+
+def getDescription():
+    """
+    If possible, use Git to extract a description of the current commit
+    """
+
+    try:
+        import sys
+        import subprocess
+        res = subprocess.check_output(["git","describe","--tags","--dirty"]+sys.argv[1:])
+    except:
+        res = None
+
+    return res.strip()
+
+
+if __name__ == '__main__':
+    tag = getDescription()
+    writeTag(tag)
+    print tag
+
+
diff --git a/src/version.h b/src/version.h
deleted file mode 100644
index a62166f..0000000
--- a/src/version.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Scyther : An automatic verifier for security protocols.
- * Copyright (C) 2007-2012 Cas Cremers
- * 
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-
-#define TAGVERSION "unknown"