File qwt-rpath.patch of Package qwt6
--- designer/designer.pro.orig 2013-08-09 18:24:58.656000009 +0300
+++ designer/designer.pro 2013-08-09 18:24:58.666000009 +0300
@@ -83,7 +83,7 @@
# compile the path for finding the Qwt library
# into the plugin. Not supported on Windows !
- QMAKE_RPATHDIR *= $${QWT_INSTALL_LIBS}
+# QMAKE_RPATHDIR *= $${QWT_INSTALL_LIBS}
qwtAddLibrary($${QWT_OUT_ROOT}/lib, qwt)
contains(QWT_CONFIG, QwtDll) {