diff --git a/.gitignore b/.gitignore
index 2cbf1f682..4e9c377b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 *.*.swp
-powder-64-sse3
 powder.def
-powder-debug
 gmon.out
 *.*.orig
-build/*
+build/powder*
+build/stamps/*
diff --git a/build/.empty b/build/.empty
new file mode 100644
index 000000000..e69de29bb