Trying to compile emacs. I copied gdkx.h from a linux machine and got as far as the linking stage with the following undefines:

Undefined symbols:
"_gdk_x11_lookup_xdisplay", referenced from:
_xg_set_screen in gtkutil.o
_xg_display_close in gtkutil.o
_xg_display_close in gtkutil.o
_xg_create_default_cursor in gtkutil.o
_xg_get_image_for_pixmap in gtkutil.o
_xg_win_to_widget in gtkutil.o
_xg_set_frame_icon in gtkutil.o
"_gdk_x11_drawable_get_xid", referenced from:
_x_report_frame_params in frame.o
_x_set_frame_alpha in xterm.o
_x_set_offset in xterm.o
_x_set_offset in xterm.o
_x_raise_frame in xterm.o
_x_lower_frame in xterm.o
_xembed_set_info in xterm.o
_x_make_frame_invisible in xterm.o
_x_wm_set_icon_pixmap in xterm.o
_x_text_icon in xterm.o
_x_make_frame_visible in xterm.o
_x_make_frame_visible in xterm.o
_x_wm_set_icon_position in xterm.o
_x_real_positions in xfns.o
_x_real_positions in xfns.o
_x_real_positions in xfns.o
_x_set_name_internal in xfns.o
_Fx_create_frame in xfns.o
_Fx_change_window_property in xfns.o
_show_hourglass in xfns.o
_Fx_send_client_event in xselect.o
_Fx_send_client_event in xselect.o
_xg_create_frame_widgets in gtkutil.o
"_gdk_x11_display_get_xdisplay", referenced from:
_xg_display_open in gtkutil.o
"_gdk_display", referenced from:
_gdk_display$non_lazy_ptr in xterm.o
_gdk_display$non_lazy_ptr in gtkutil.o
"_gdk_xid_table_lookup_for_display", referenced from:
_xg_win_to_widget in gtkutil.o

Do I need to implement these functions or are there equivalent functions for macs os.

Thanks
Martin