diff --git a/desmume/src/cocoa/build_dmg.sh b/desmume/src/cocoa/build_dmg.sh
new file mode 100644
index 000000000..574dac03d
--- /dev/null
+++ b/desmume/src/cocoa/build_dmg.sh
@@ -0,0 +1,33 @@
+#   Copyright 2006 Guillaume Duhamel
+#   Copyright 2006 Lawrence Sebald
+#   Copyright 2007 Anders Montonen
+#
+#   This file is part of Yabause.
+#
+#   Yabause is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   Yabause is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with Yabause; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+
+
+hdiutil create -megabytes 20 tmp.dmg -layout NONE -fs HFS+ -volname DeSmuME -ov
+tmp=`hdid tmp.dmg`
+disk=`echo $tmp | cut -f 1 -d\ `
+cp -R build/Release/DeSmuME.app /Volumes/DeSmuME/
+cp ../../ChangeLog /Volumes/DeSmuME/
+cp ../../README /Volumes/DeSmuME/
+cp ../../README.MAC /Volumes/DeSmuME/
+cp ../../AUTHORS /Volumes/DeSmuME/
+cp ../../COPYING /Volumes/DeSmuME/
+hdiutil eject $disk
+hdiutil convert -format UDZO tmp.dmg -o DeSmuME.dmg
+rm tmp.dmg