How to connect go-gtk correctly?

Question

GTK+

How to properly connect this creation, or rather, the pango and glib libraries used by it?
At the moment, when trying to compile, the output is:
# pkg-config --cflags glib-2.0 gobject-2.0
pkg-config: exit status 3221225595
# pkg-config --cflags pango
pkg-config: exit status 3221225595
English Google wrote something about environment variables, but I didn’t see the specifics, and it would be strange.