Re: [Caml-list] libasmrun.a not compatible with dynamic linking on mac os x

[Keyan <ml@pulsschlag.net>]

Hi,

thanks for trying. I just recently solved this issue by compiling the code differently:

ocamlopt -o mylib.so ocaml_source.ml -ccopt my_c_source.c -ccopt -shared 
g++ -dynamiclib -o myfinallib.dylib -L/usr/local/lib/ocaml/ -lasmrun -lnums -ldl -Wl,-search_paths_first -Wl,-headerpad_max_install_names -fPIC Controller.o mylib.so 

I haven't even checked yet, if all the options are really required, i.e. -fPIC, and both -Wl, options.

Best,
Keyan

On 21 Jul 2012, at 10:31, ygrek wrote:

> On Mon, 16 Jul 2012 17:05:53 +0200
> Keyan <ml@pulsschlag.net> wrote:
> 
>> Hi,
>> 
>> i try to compile a dynamic library on mac os x, from ocaml-code using the following lines in my makefile;
>> 
>> camlopt -output-obj -o ocaml_controller.o -I /usr/local/lib/ocaml/site-lib/batteries ocaml_controller.ml 
>> ocamlc -o ocaml_interface.o -c ocaml_interface.c -I /usr/local/lib/ocaml/ 
>> libtool -static -a -o mylib.a /usr/local/lib/ocaml/libasmrun.a ocaml_controller.o ocaml_interface.o
>> g++ -o Controller.o -c Controller.cpp 
>> g++ -v -dynamiclib -o libController.dylib Controller.o mylib.a
> 
> I couldn't fully reproduce these steps (on linux) because libtool doesn't want to accept such command line.
> But still what occurs to me - you probably shouldn't use "ocaml_controller.o" as -output-obj target, because
> the file with such name is generated as a .cmx companion. Name it smth like ocaml_controller_obj.o.
> I've got ocamlopt errors otherwise. Does it help?
> 
> -- 
> ygrek
> http://ygrek.org.ua
> 
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