I have a problem with an undefined symbol

[Adrian Victor CRISCIU <acrisciu catedra chfiz pub ro>]

Hi,

I just installed gtk+-2.8.10 with all its dependencies (I compiled every one 
of them from source) and cannot run gtk-demo. It crashes with the following 
message:

gtk-demo: relocation error: /usr/local/lib/libgtk-x11-2.0.so.0: undefined 
symbol: g_object_compat_control

What do I do wrong?

Thanks,
Adrian