--- /dev/null
+--- gnuradio-3.7.13.4/cmake/Modules/FindQwt.cmake~ 2018-07-15 18:09:20.000000000 +0200
++++ gnuradio-3.7.13.4/cmake/Modules/FindQwt.cmake 2019-03-30 10:40:11.744273836 +0100
+@@ -15,6 +15,7 @@
+ /usr/local/include/qwt
+ /usr/include/qwt6
+ /usr/include/qwt-qt4
++ /usr/include/qt4/qwt
+ /usr/include/qwt
+ /usr/include/qwt5
+ /opt/local/include/qwt