Also, because i use gentoo, I earlier had to give the QWT dir in order for gnuradio to build gr-qtgui, the cmake now writes:
-- Could NOT find Qwt (missing: QWT_INCLUDE_DIRS)
...
-- Configuring gr-qtgui support...
-- Dependency Boost_FOUND = TRUE
-- Dependency QT4_FOUND = YES
-- Dependency QWT_FOUND = FALSE
-- Dependency ENABLE_GR_CORE = ON
-- Dependency PYTHONLIBS_FOUND = TRUE
-- Dependency PYQT4_FOUND = TRUE
-- Disabling gr-qtgui support.
-- Override with -DENABLE_GR_QTGUI=ON/OFF
Seeing as i have qwt in version 5.2.0 I find this weird.
(I do not however have pyqwt (it is masked in gentoo), could this be the actual error?)