diff -u10 -r qwtplot3d/qwtplot3d.pro qwtplot3d.1/qwtplot3d.pro
--- qwtplot3d/qwtplot3d.pro	2007-05-20 17:51:50.000000000 +0200
+++ qwtplot3d.1/qwtplot3d.pro	2019-07-05 13:12:47.367738983 +0200
@@ -1,14 +1,14 @@
 # pro file for building the makefile for qwtplot3d
 #
 
-TARGET            = qwtplot3d
+TARGET            = qwtplot3d-qt5
 TEMPLATE          = lib
 CONFIG           += qt warn_on opengl thread zlib debug
 MOC_DIR           = tmp
 OBJECTS_DIR       = tmp
 INCLUDEPATH       = include
 DEPENDPATH        = include src
 DESTDIR      			= lib
 #DESTDIR      			= ../../../lib
 QT += opengl