QT5 is default now

doc/sphinx/installation.rst

@@ -239,7 +239,7 @@ The following options are available:
 	* runtimePREFIX: used for packaging, when install directory is not the same as runtime directory (/usr/local by default)
 	* CHUNKSIZE: specifiy the chunk size if you want several sources to be compiled at once. Increases compilation speed but RAM-consumption during compilation as well (1 by default)
 	* VECTORIZE: enables vectorization and alignment in Eigen3 library, experimental (OFF by default)
-	* USE_QT5: use QT5 for GUI, experimental (OFF by default)
+	* USE_QT5: use QT5 for GUI, experimental (ON by default)
 
 For using more extended parameters of cmake, please follow the corresponding
 documentation on `https://cmake.org/documentation <https://cmake.org/documentation/>`_.