Re: [Caml-list] ocamlbuild and installed modules and libraries
Le 16 nov. 08 à 21:37, Nicolas Pouillard a écrit : I'm a bit uncomfortable with this kind of dynamic or special tags. However the simplest solution to your problem is probably one of those: 1/ ocamlbuild -cflags -I,+xmlm,xmlm.cmx test.native You meant, ocamlbuild -cflags -I,+xmlm -lflags -I,+xmlm,xmlm.cmx test.native I still think using ocamlbuild with installed libraries/modules is a little bit problematic. If we have to do it that way [1] we are hard- coding the location of the library in the plugin which doesn't feel right. For me there should be (1) a way of defining the dependency on a module/library (hopefully without needing a plugin) and (2) a way of defining its location (-I). These two aspects should be decoupled. This makes it easier to drive the installation process in build scripts by using environment variables, i.e. I just need to specify the location of the module/library I depend on via a suitable -I $DEPDIR to compile the sources. Best, Daniel [1] http://brion.inria.fr/gallium/index.php/Using_an_external_library ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
Re: [Caml-list] ocamlbuild and installed modules and libraries
Daniel Bünzli a écrit : Le 16 nov. 08 à 21:37, Nicolas Pouillard a écrit : I'm a bit uncomfortable with this kind of dynamic or special tags. However the simplest solution to your problem is probably one of those: 1/ ocamlbuild -cflags -I,+xmlm,xmlm.cmx test.native You meant, ocamlbuild -cflags -I,+xmlm -lflags -I,+xmlm,xmlm.cmx test.native I still think using ocamlbuild with installed libraries/modules is a little bit problematic. If we have to do it that way [1] we are hard-coding the location of the library in the plugin which doesn't feel right. For me there should be (1) a way of defining the dependency on a module/library (hopefully without needing a plugin) and (2) a way of defining its location (-I). These two aspects should be decoupled. This makes it easier to drive the installation process in build scripts by using environment variables, i.e. I just need to specify the location of the module/library I depend on via a suitable -I $DEPDIR to compile the sources. Isn't it almost as simple to write, in a script: ocamlbuild -cflags -I,$DEPDIR -lflags -I,$DEPDIR instead of: ocamlbuild -I $DEPDIR Remember that $DEPDIR must be absolute, or relative to the _build directory. Then you can use ocamlbuild with the -lib option as usual, in a decoupled way. For instance, if bla/bla.cma is in your current directory: $ ocamlbuild -classic-display -lib bla -cflags -I,../bla -lflags -I,../bla test.byte ocamldep.opt -modules test.ml test.ml.depends ocamlc.opt -c -I ../bla -o test.cmo test.ml ocamlc.opt -I ../bla bla.cma test.cmo -o test.byte And for modules, instead of -lib bla, you write -lflags bla.cmo or -lflags bla.cmx. You can have several -lflags if you want. Unfortunately you have to specify the extension, so it is true that a -mod option would actually add something. I admit, though, that it is not really easy to understand how to include a library. One solution would be to have findlib in ocamlbuild, but even then, there would be problems if you want a Makefile which is supposed to work also when findlib is not installed. I think there is a recent debate about the -I option of Ocamlbuild... -- Romain Bardou ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
[Caml-list] ocamlbuild and installed modules and libraries
Hello, Is it possible to specify a single installed module (instead of a lib) for link time ? That is is there something like -lib but for module so that I can type : ocamlbuild -I +xmlm -mod xmlm test.native where test.ml uses the xmlm module And what about having special tags use_lib_$LIB and use_mod_$MOD that automatically create rules to use libraries $LIB.cm(x)a and module $MOD.cm(o|x) so that just the appropriate -I to find the files has to be specified. In most cases having to use a plugin just for that seems overkill. Or is there another way ? Best, Daniel ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
Re: [Caml-list] ocamlbuild and installed modules and libraries
Excerpts from daniel.buenzli's message of Sun Nov 16 19:22:02 +0100 2008: Hello, Is it possible to specify a single installed module (instead of a lib) for link time ? That is is there something like -lib but for module so that I can type : ocamlbuild -I +xmlm -mod xmlm test.native where test.ml uses the xmlm module This would make sense, but I would prefer not to push things in this direction. Options like -lib,-cflag,-lflag... are intended to be used only in a quick hack usage, indeed they are global and tags are much more powerful. And what about having special tags use_lib_$LIB and use_mod_$MOD that automatically create rules to use libraries $LIB.cm(x)a and module $MOD.cm(o|x) so that just the appropriate -I to find the files has to be specified. In most cases having to use a plugin just for that seems overkill. Or is there another way ? I'm a bit uncomfortable with this kind of dynamic or special tags. However the simplest solution to your problem is probably one of those: 1/ ocamlbuild -cflags -I,+xmlm,xmlm.cmx test.native 2/ ln -s sources-of-xmlm xmlm ocamlbuild -I xmlm test.native 3/ ln -s $(ocamlc -where)/xmlm . ocamlbuild -tag_line 'xmlm: not_hygienic' -I xmlm test.native Hope that helps, -- Nicolas Pouillard aka Ertai ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
