-LyX has been tested with Qt 4.2.x and Qt 4.3.x. The only special point
-to make is that you must ensure that both LyX and the Qt libraries are
-compiled with the same C++ compiler.
+LyX has been tested with Qt 4.2/3/4.x. For compilation you need to compile
+against at least Qt 4.2.2. The only special point to make is that you must
+ensure that both LyX and the Qt libraries are compiled with the same C++
+compiler.