-DWANT_(CORE|QTCLIENT|MONO)=(ON|OFF)
Choose which Quassel binaries to build.
+-DUSE_CCACHE=ON
+ Enable ccache if the ccache binary is available. This avoids the need for
+ hacks using PATH or the CXX variable to make ccache work.
+ Distributors may want to disable automatic detection if they have their
+ own caching mechanism set up.
+
-DUSE_QT4=ON
Build against the deprecated Qt4 instead of the default Qt5. Note that you
should empty your build directory when switching between Qt versions,