rsync - Jan 2002 - Rsync and files larger than 2GB on HP-UX (again)

I'm having problems copying files between HP-UX 11.00 boxes that are large
than 2GB using 2.5.1. With 2.4.6 I could add "-D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64" to CFLAGS and it would work. What's the secret
for 2.5.1? I've tried a few things but nothing seems to work.

Here's the old 2.4.6 post:
http://lists.samba.org/pipermail/rsync/2000-May/002199.html

TIA

-- Clay