Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.
diff --git a/setup.py b/setup.py
index d69875c..b2829ac 100644
--- a/setup.py
+++ b/setup.py
@@ -467,6 +467,10 @@
         if platform in ['osf1', 'unixware7', 'openunix8']:
             lib_dirs += ['/usr/ccs/lib']
 
+        # HP-UX11iv3 keeps files in lib/hpux folders.
+        if platform == 'hp-ux11':
+            lib_dirs += ['/usr/lib/hpux64', '/usr/lib/hpux32']
+
         if platform == 'darwin':
             # This should work on any unixy platform ;-)
             # If the user has bothered specifying additional -I and -L flags