diff --git a/.Rbuildignore b/.Rbuildignore
new file mode 100644
index 0000000..99417f0
--- /dev/null
+++ b/.Rbuildignore
@@ -0,0 +1,3 @@
+\.github$
+\.prepare$
+\.git$
diff --git a/.prepare b/.prepare
new file mode 100755
index 0000000..7300219
--- /dev/null
+++ b/.prepare
@@ -0,0 +1,3 @@
+#!/bin/sh
+sh mkdist
+(cd .. ; tar xzvf rJava_*.tar.gz)