FreeBSD and gtk 1.1.3 problem

[Lyndon Drake <lyndon stat auckland ac nz>]

Hi,

When I try to run any gtk+ application, I get this error:
/usr/libexec/ld.so: Undefined symbol "__Xsetlocale" called from gtkicq:/usr/X11R6/lib/libgtk11.so.1.3 at 0x2012565c

The machine is a FreeBSD 2.2.7 PII-450, with gtk+ 1.1.3 and glib 1.1.4.  We have XFree86.

I desperately need help with this, as my job is to develop a GTK interface for R (a stats package that is part of the GNU project).  Until I can get it running, I can't do much useful work.  Can anyone make a suggestion as to the cause?

I can compile programs without any trouble.

Thanks,
Lyndon