# reason: configure looks for the wrong filename
# note: should be fixed in the next release

--- configure
+++ configure
@@ -34697,7 +34697,7 @@
   case "$qt_version" in
     4)
       QT_MODULES="QtCore QtGui QtNetwork QtOpenGL"
-      octave_qscintilla_libnames=qscintilla2
+      octave_qscintilla_libnames=qscintilla2 qscintilla_qt5
     ;;
     5)
       QT_MODULES="Qt5Core Qt5Gui Qt5Network Qt5OpenGL Qt5PrintSupport"