strop doesn't actually seem to be needed
diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index 59aa6e7..ad471ce 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -92,7 +92,6 @@
 
 posix posixmodule.c		# posix (UNIX) system calls
 _sre _sre.c			# Fredrik Lundh's new regular expressions
-strop stropmodule.c	        # fast string operations implemented in C
 
 # The rest of the modules previously listed in this file are built
 # by the setup.py script in Python 2.1.