To find function declaration in static library

The following command finds a reference to function "gtk_widget_get_pango_context" in static library libwxOil.a:

linux-bvhg:~/> nm -l -C libwxOil.a  | grep gtk_widget_get_pango_context
                 U gtk_widget_get_pango_context(_GtkWidget*)  /home/myname/src/XaraLX/wxOil/ftfonts.cpp:868