propcc src/gtkBaseProps.ml,src/ogtkBaseProps.ml
Warning: no conversion for type GdkWindow_opt in class GtkWidget
      propcc src/gtkMiscProps.ml,src/ogtkMiscProps.ml
Warning: no conversion for type PangoAttrList in class GtkLabel
Warning: no conversion for type GIcon in class GtkImage
Warning: no conversion for type GdkPixbufAnimation in class GtkImage
Warning: no conversion for type CairoSurface in class GtkImage
      propcc src/gtkTextProps.ml,src/ogtkTextProps.ml
Warning: no conversion for type PangoTabArray in class GtkTextView
Warning: no conversion for type PangoTabArray in class GtkTextTag
      propcc src/gtkTreeProps.ml,src/ogtkTreeProps.ml
Warning: no conversion for type PangoAttrList in class GtkCellRendererText
         gcc src/ml_glib.o
ml_glib.c: In function ‘ml_g_main_iteration’:
ml_glib.c:262:13: warning: Deprecated pre-processor symbol: replace with "g_main_context_iteration"
  262 | ML_1 (g_main_iteration, Bool_val, Val_bool)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                             
ml_glib.c: In function ‘ml_g_main_pending’:
ml_glib.c:263:13: warning: Deprecated pre-processor symbol: replace with "g_main_context_pending"
  263 | ML_0 (g_main_pending, Val_bool)
      |             ^~~~~~~~~~~~~~~~~~~                                                       
ml_glib.c: In function ‘ml_g_main_is_running’:
ml_glib.c:264:13: warning: Deprecated pre-processor symbol: replace with "g_main_loop_is_running"
  264 | ML_1 (g_main_is_running, GMainLoop_val, Val_bool)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                     
ml_glib.c: In function ‘ml_g_main_quit’:
ml_glib.c:265:13: warning: Deprecated pre-processor symbol: replace with "g_main_loop_quit"
  265 | ML_1 (g_main_quit, GMainLoop_val, Unit)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~                                         
ml_glib.c: In function ‘ml_g_main_destroy’:
ml_glib.c:266:13: warning: Deprecated pre-processor symbol: replace with "g_main_loop_unref"
  266 | ML_1 (g_main_destroy, GMainLoop_val, Unit)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                       
ml_glib.c: In function ‘ml_g_get_charset’:
ml_glib.c:543:13: warning: Deprecated pre-processor symbol: replace with "const"
  543 |   G_CONST_RETURN char *c;
      |             ^~~~~~~~~~~~~                                            
         gcc src-sourceview3/ml_gtksourceview3.o
ml_gtksourceview3.c:796:13: warning: Deprecated pre-processor symbol: replace with "const"
  796 | static G_CONST_RETURN gchar *
      |             ^~~~~~~~~~~~~~~~~                                        
      ocamlc src/.lablgtk3.objs/byte/cairo_pango.{cmi,cmti} (exit 2)
(cd _build/default && /usr/bin/ocamlc.opt -w -40 -w -6-7-9-10-27-32-33-34-35-36-50-52 -no-strict-sequence -g -bin-annot -I src/.lablgtk3.objs/byte -I /usr/lib/ocaml/cairo2 -I /usr/lib/ocaml/threads -no-alias-deps -o src/.lablgtk3.objs/byte/cairo_pango.cmi -c -intf src/cairo_pango.mli)
File "src/cairo_pango.mli", line 1:
Error: /usr/lib/ocaml/cairo2/cairo.cmi
       is not a compiled interface for this version of OCaml.
It seems to be for an older version of OCaml.
      ocamlc src/.lablgtk3.objs/byte/gdk.{cmi,cmti} (exit 2)
(cd _build/default && /usr/bin/ocamlc.opt -w -40 -w -6-7-9-10-27-32-33-34-35-36-50-52 -no-strict-sequence -g -bin-annot -I src/.lablgtk3.objs/byte -I /usr/lib/ocaml/cairo2 -I /usr/lib/ocaml/threads -no-alias-deps -o src/.lablgtk3.objs/byte/gdk.cmi -c -intf src/gdk.mli)
File "src/gdk.mli", line 1:
Error: /usr/lib/ocaml/cairo2/cairo.cmi
       is not a compiled interface for this version of OCaml.
It seems to be for an older version of OCaml.
==> ERROR: A failure occurred in build().
    Aborting...