pretraitement: mon_img.o bin_img.o img.o myexc.mli myfun.mli
ocamlc myexc.mli myfun.mli img.o mon_img.o bin_img.o pretraitement.ml

mon_img.o: myfun.mli myexc.mli img.o
ocamlc -c myfun.mli myexc.mli img.o mon_img.ml

bin_img.o: myfun.mli myexc.mli img.o
ocamlc -c myfun.mli myexc.mli img.o bin_img.ml

img.o: myfun.mli myexc.mli
ocamlc -c myfun.mli myexc.mli img.ml

myfun.mli:
ocamlc -c myfun.ml

myexc.mli:
ocamlc -c myexc.ml