--- serf-1.3.8.old/SConstruct
+++ serf-1.3.8/SConstruct
@@ -180,8 +180,8 @@
   print 'Unknown variables:', ', '.join(unknown.keys())
   Exit(1)
 
-apr = str(env['APR'])
-apu = str(env['APU'])
+apr = "__META_PRODTREE__/libapr"
+apu = "__META_PRODTREE__/libapr"
 zlib = str(env['ZLIB'])
 gssapi = env.get('GSSAPI', None)
 
==== end of patch file ====