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@@ -111,6 +111,7 @@ Download Qt 5.3 from here: <http://download.qt-project.org/official_releases/qt/
 * Single release congfiguration on Windows: If you want to build a vs project that does not create both debug and release builds. Include `CONFIG-=debug_and_release` on the qmake command line plus either `CONFIG+=debug` or 
 `CONFIG+=release` depending on the build type you want.
 * Build using QtCreator: It is possible to build and debug using QtCreator as well. The above instructions should provide you with enough information to setup QtCreator on OSX and Linux. QtCreator on Windows is supposedly possible but we don't have any instructions available for that.
+* Google Earth is only supported on 32 bit builds, which by default means only Windows builds.
 
 ## Additional functionality
 QGroundcontrol has functionality that is dependent on the operating system and libraries installed by the user. The following sections describe these features, their dependencies, and how to disable/alter them during the build process. These features can be forcibly enabled/disabled by specifying additional values for variables either at the command line when calling `qmake` or in the `user_config.pri`. When calling `qmake` additional variables can be set using the syntax `VARIABLE="SPACE_SEPARATED_VALUES"`, which can be repeated for multiple variables. For example: `qmake DEFINES="DISABLE_QUPGRADE DISABLE_SPEECH" MAVLINK_CONF="sensesoar"` disables the QUpgrade widget, speech functionality, and sets the MAVLink dialect to sensesoar. These values can be more permanently specified by setting them in the `user_config.pri` file in the root directly. Copy the `user_config.pri.dist` file and name the copy `user_config.pri`, uncommenting the lines with the variables to modify and set their values as you desire.