diff -up PyQwt-5.2.0/configure/configure.py.manually_link_qwt PyQwt-5.2.0/configure/configure.py
--- PyQwt-5.2.0/configure/configure.py.manually_link_qwt	2009-08-01 02:28:33.000000000 -0500
+++ PyQwt-5.2.0/configure/configure.py	2012-10-19 11:49:01.088256144 -0500
@@ -747,9 +747,9 @@ def setup_qwt5_build(configuration, opti
         # yes, zap all occurrences of a qwt library
         while options.extra_libs.count(qwt):
             options.extra_libs.remove(qwt)
-    elif qwt not in options.extra_libs:
+    #elif qwt not in options.extra_libs:
         # no, add the qwt library if needed
-        options.extra_libs.append(qwt)
+        #options.extra_libs.append(qwt)
 
     # zap the temporary directory
     try: