I'm using wxGTK 1.95, a libc 5.4.38 system, and EGCS 1.1b, and
libpthread 0.7, but threads disabled for wxGTK.  Things seem to
build fine here, except I wouldn't recommend you use this C library
to build wxGTK.  You might notice that on of the wxString constructors
(the one for wchar_t strings) calls wcstombs() with a NULL pointer, 
and an argument to write 0 characters... well, that seems broken on 
my system, so I hacked around it.  This problem doesn't appear on any 
glibc2 systems I've checked, but it may well have been fixed in libc 
5.4.44 or up.
-- Shaw Terwilliger (sterwill@abisource.com)