--- a/BuildingOnMac.wiki	Sat Dec 01 23:47:15 2012 +0000
+++ b/BuildingOnMac.wiki	Sat Dec 01 23:50:36 2012 +0000
@@ -3,13 +3,14 @@
 
 = Prerequisites =
 
-  * XCode must be installed
+  * XCode must be installed with command line tools
   * some knowledge of Terminal is preferred
 
 === Notes ===
 
    # it has been reported that Xcode 3.2.6 creates problem when linking frameworks! If you can't use another version, try this: https://discussions.apple.com/thread/2781968?threadID=2781968&tstart=105
-   # For Qt series 4.7, only versions 4.7.0 and 4.7.4 are not suffering from this bug http://bugreports.qt.nokia.com/browse/QTBUG-17333 any other version will not work with online games.
+   # for Xcode 4 onwards, you need to install the command line tools: open Xcode, go to Preferences, select "Downloads" and install the "Command Line Tools".
+   # for Qt series 4.7, only versions 4.7.0 and 4.7.4 are not suffering from this bug http://bugreports.qt.nokia.com/browse/QTBUG-17333 any other version will not work with online games.
    # Lion has an incompatible ABI with older version of Freepascal! Use only the new Freepascal version 2.6.0 or newer. See http://bugs.freepascal.org/view.php?id=19269
 
 == Necessary Libraries ==