diff --git a/INSTALL b/INSTALL
index f0c5e675f..7a80afca1 100644
--- a/INSTALL
+++ b/INSTALL
@@ -19,3 +19,12 @@ make install [DESTDIR=X]
 Run tests:
 ==========
 make test [CTEST_OUTPUT_ON_FAILURE=1] [ARGS+=-jX] [ARGS+="-E testgui"]
+
+Building on Mac OS X:
+=====================
+Install macports and cmake
+Open /opt/local/etc/macports/macports.conf and set the architecture(s) you want to build for.
+Run: sudo port install qt4-mac libgcrypt zlib
+     If you want to build a universal binary append " +universal" to the above command.
+Pass -DCMAKE_OSX_ARCHITECTURES="<ARCH1>;<ARCH2>" to cmake
+Run: make package