Index: gtkhid-cairo.c
===================================================================
--- gtkhid-cairo.c	(revision 10268)
+++ gtkhid-cairo.c	(revision 10269)
@@ -92,6 +92,10 @@
 
 static void draw_lead_user(render_priv_t * priv_);
 
+#warning TODO: replace GdkRGBA with pcb_gtk_color_t to avoid incompatible pointer type
+/*../src_plugins/hid_gtk3_cairo/gtkhid-cairo.c:1541:26: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
+   common->get_color_name = get_color_name;
+*/
 static const gchar *get_color_name(GdkRGBA * color)
 {
 	static char tmp[16];
@@ -1538,6 +1542,7 @@
 		common->draw_grid_local = ghid_cairo_draw_grid_local;
 		common->drawing_area_configure_hook = ghid_cairo_drawing_area_configure_hook;
 		common->shutdown_renderer = ghid_cairo_shutdown_renderer;
+#warning TODO: change common API to use compatibility layer :  pcb_gtk_color_t
 		common->get_color_name = get_color_name;
 		common->map_color_string = map_color_string;
 	}