[gtkmm] can't run the threads example

[Silviu D Minut <minutsil cse msu edu>]

I'm messing with threads and I'm trying to run the examples in
/usr/share/doc/gtkmm2-devel-2.2.3/examples/thread/. I compiled thread.cc
like so:

g++ -g -Wall -o thread thread.cc `pkg-config --cflags --libs glibmm-2.0
gthread`

and it compiled with no complaints whatsoever. When I run it, it segfaults
upon Glib::thread_init().

Does anybody see what am I doing wrong?

Thanks!