echo 'Creating brew-patch.diff'
cat << EOF >> brew-patch.diff
diff --git a/designer/designer.pro b/designer/designer.pro
index c269e9d..c2e07ae 100644
--- a/designer/designer.pro
+++ b/designer/designer.pro
@@ -126,6 +126,16 @@ contains(QWT_CONFIG, QwtDesigner) {

     target.path = $${QWT_INSTALL_PLUGINS}
     INSTALLS += target
+
+    macx {
+        contains(QWT_CONFIG, QwtFramework) {
+            QWT_LIB = qwt.framework/Versions/$${QWT_VER_MAJ}/qwt
+        }
+        else {
+            QWT_LIB = libqwt.$${QWT_VER_MAJ}.dylib
+        }
+        QMAKE_POST_LINK = install_name_tool -change $${QWT_LIB} $${QWT_INSTALL_LIBS}/$${QWT_LIB} $(DESTDIR)$(TARGET)
+    }
 }
 else {
     TEMPLATE        = subdirs # do nothing
EOF