diff --git a/envsetup.sh b/envsetup.sh
index 0a90460..63837ec 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -2006,6 +2006,11 @@
             fi
         done
     done
+
+    if [[ "${PWD}" == /google/cog/* ]]; then
+        f="build/make/cogsetup.sh"
+        echo "including $f"; . "$T/$f"
+    fi
 }
 
 function showcommands() {