The ocamldep command scans a set of Objective Caml source files (.ml and .mli files) for references to external compilation units, and outputs dependency lines in a format suitable for the make utility. This ensures that make will compile the source files in the correct order, and recompile those files that need to when a source file is modified.
The typical usage is:
ocamldep options *.mli *.ml > .depend
where *.mli *.ml expands to all source files in the current directory and .depend is the file that should contain the dependencies. (See below for a typical Makefile.)
Dependencies are generated both for compiling with the bytecode compiler ocamlc and with the native-code compiler ocamlopt.
The following command-line option is recognized by ocamldep.
Here is a template Makefile for a Objective Caml program.
OCAMLC=ocamlc OCAMLOPT=ocamlopt OCAMLDEP=ocamldep INCLUDES= # all relevant -I options here OCAMLFLAGS=$(INCLUDES) # add other options for ocamlc here OCAMLOPTFLAGS=$(INCLUDES) # add other options for ocamlopt here # prog1 should be compiled to bytecode, and is composed of three # units: mod1, mod2 and mod3. # The list of object files for prog1 PROG1_OBJS=mod1.cmo mod2.cmo mod3.cmo prog1: $(PROG1_OBJS) $(OCAMLC) -o prog1 $(OCAMLFLAGS) $(PROG1_OBJS) # prog2 should be compiled to native-code, and is composed of two # units: mod4 and mod5. # The list of object files for prog2 PROG2_OBJS=mod4.cmx mod5.cmx prog2: $(PROG2_OBJS) $(OCAMLOPT) -o prog2 $(OCAMLFLAGS) $(PROG2_OBJS) # Common rules .SUFFIXES: .ml .mli .cmo .cmi .cmx .ml.cmo: $(OCAMLC) $(OCAMLFLAGS) -c $< .mli.cmi: $(OCAMLC) $(OCAMLFLAGS) -c $< .ml.cmx: $(OCAMLOPT) $(OCAMLOPTFLAGS) -c $< # Clean up clean: rm -f prog1 prog2 rm -f *.cm[iox] # Dependencies depend: $(OCAMLDEP) $(INCLUDES) *.mli *.ml > .depend include .depend