Auto-generate the version information of Doxygen documentation
diff --git a/.gitignore b/.gitignore
index d39ae4a..429c8b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,11 @@
 stamp-h1
 libtool
 
+Doxyfile
+Doxyfile.gsm
+Doxyfile.vty
+Doxyfile.codec
+
 .tarball-version
 .version