Trying to use the glib thread pool stuff and getting undefined reference to `g_thread_init'

Issue

• Trying to use the glib thread pool stuff.

09:49:07 > rpm -qa | grep glib2
glib2-devel-2.22.5-6.el6.x86_64
pulseaudio-libs-glib2-0.9.21-13.el6.x86_64
glib2-2.22.5-6.el6.x86_64

• According to the docs v2.22 still requires g_thread_init.
• When called it returns:

dump_fts.c:(.text+0x134d): undefined reference to `g_thread_init'

• Checking the lib for the symbol:

09:50:32 > nm -D /usr/lib64/libglib-2.0.so | grep thread_init
0000003fff262580 T g_thread_init_glib

• Can't find any reference on the web for g_thread_init_glib.
• Perhaps v2.22 is too old to use the thread stuff reliably?
• Why is g_thread_init not in the library?