diff --git a/.gitignore b/.gitignore
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,9 @@
+*.a
+*.core
+*.o
+*.so
+*.swp
+*~
 _.tinderbox.*
 _.universe-toolchain
 _.amd64.*
@@ -15,5 +21,7 @@
 GRTAGS
 GTAGS
 ID
+cscope.files
+cscope.in.out
 cscope.out
-?cscope.out
+cscope.po.out