diff --git a/gob/build.sh b/gob/build.sh
new file mode 100755
index 00000000..323a6029
--- /dev/null
+++ b/gob/build.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -ex
+
+for svc in gen web word ; do
+  GOOS=linux GOARCH=amd64  go build -o $svc.linux_amd64 $svc/main.go
+  GOOS=darwin GOARCH=amd64 go build -o $svc.darwin      $svc/main.go
+done