Thanks a lot Pierrick, now I have a set of working makefiles:
# this is Makefile.a
SOURCES = a.ml
RESULT = a
all: byte-code-library
-include OCamlMakefile
# this is Makefile.b
SOURCES = b.ml
RESULT = b
all: byte-code-library
-include OCamlMakefile
# this is Makefile.test
SOURCES = test.ml
LIBS = str a b
RESULT = test
all: byte-code
-include OCamlMakefile
Le 06/03/2015 11:44, Pierrick Couderc a écrit :
> Hi,
>
> I'm not an expert at all with OCamlMakefile, but I guess that
comes from the fact the compiler embeds Str in both libraries
"a.cma" and "b.cma". Doing it by hand:
>
> $ ocamlc -a -o a.cma a.ml
> $ ocamlc -a -o b.cma b.ml
> $ ocamlc -o a.out str.cma a.cma b.cma test.ml
>
> You don't need to give "str" as Lib when generating your
libraries, only when producing your executable :-) If you give
str.cma when generating your libraries:
>
> $ ocamlc -a -o a.cma str.cma a.ml
> $ ocamlc -a -o b.cma str.cma b.ml
> $ ocamlc -o a.out a.cma b.cma test.ml
> File "b.cma(Str)", line 1:
> Warning 31: files b.cma(Str) and a.cma(Str) both define a
module named Str
>
>
> Pierrick
>
> 2015-03-06 11:16 GMT+01:00 Vu Ngoc San
<san.vu-ngoc@laposte.net>:
>
> Hello list
>
> I have a basic compilation question:
> I want to write two independent libraries, say A an B,
and both use a third library, eg. Str
>
> When I write a program which uses A and B, I get
> File "b.cma(Str)", line 1:
> Warning 31: files b.cma(Str) and a.cma(Str) both define a
module named Str
>
> How to get rid of this warning ? Am I doing something
wrong ?
>
> Thanks
> San
>
> ----
>
> Here is a minimal example:
>
> (* This is a.ml *)
>
> let version = "A";;
> let _ = print_endline (Str.string_before "Loading the A
library -- foo" 22);;
>
> (* This is b.ml *)
>
> let version = "B";;
> let _ = print_endline (Str.string_before ("Loading the "
^ version ^" library -- bar") 23);;
>
> # this is Makefile.a
>
> SOURCES = a.ml
> LIBS = str
> RESULT = a
> all: byte-code-library
> -include OCamlMakefile
>
> # this is Makefile.b
>
> SOURCES = b.ml
> LIBS = str
> RESULT = b
> all: byte-code-library
> -include OCamlMakefile
>
> (* this is test.ml *)
>
> let _ = print_endline (Str.string_before ("Hello " ^
A.version ^ " and " ^ B.version ^"---") 13);;
>
> # this is Makefile.test
>
> SOURCES = test.ml
> LIBS = a b
> RESULT = test
> all: byte-code
> -include OCamlMakefile
>
>
>
> --
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>
>
>
>
> --
> Pierrick COUDERC
>
> PhD Student at OCamlPro / ENSTA Paristech Université Paris
Saclay