diff --git a/bootstrap b/bootstrap
index dc68b4d..0fbd4b5 100644
--- a/bootstrap
+++ b/bootstrap
@@ -4,4 +4,19 @@ if [ ! -d "m4" ]; then
 	mkdir m4
 fi
 
+export COG=$(command -v cog)
+[ -z "$COG"] && export COG=$(command -v cog.py)
+
+if [ -z "$COG" ]; then
+    echo "Please install the Cog code generator, probably with pip install cogapp"
+    return 1
+fi
+
+echo "cog found at $COG"
+for cogfile in $(find src -name "*.cog"); do
+    decogged=${cogfile%.cog}
+    echo "greasing cog for ${decogged}..."
+    $COG -d -o ${decogged} ${cogfile}
+done
+
 autoreconf --install