http://bugs.winehq.org/show_bug.cgi?id=20196
--- Comment #8 from Andrew Nguyen arethusa26@gmail.com 2011-02-20 06:42:55 CST --- (In reply to comment #7)
You realise not fixing this means anybody who is still stuck on the Linux 2.4 kernel cannot use WINE 1.2+ (must be stuck on 1.0). pthread requires Linux 2.6.
I'm very skeptical of this claim, given that pthreads itself is a very old interface, and Wine does claim to hypothetically run on Linux 2.0.36+, which is over ten years old.
I've successfully managed to compile (after slightly modifying server/thread.c) and execute Wine on CentOS 3.9, which sports 2.4.21-63.EL, so I don't see any reason why pthreads needs to be disabled.