Having linker problems.

["John Lambert" <johnlambert eircom net>]

Hi there, I just typed in the program that is in the book developing linux
applications with GTK+ and GDK. I'm getting undefined linker errors for the
functions g_set_error_handler, g_whatever_handler (s).  This is the first
program on pages 10,11, and 12.  I was wondering if you could throw some
light on this problem.

Yours obliged John Lambert.