我在一个名为main.ml
的文件中有这个:
let () = JsooTop.initialize ()
我尝试使用以下方法编译文件:
ocamlfind ocamlc -package js_of_ocaml -linkpkg -o main.byte main.ml
但是出现此错误:
File "main.ml", line 1, characters 9-27:
Error: Unbound module JsooTop
似乎我的机器上没有JsooTop
,所以我运行了opam install js_of_ocaml-toplevel
,并尝试使用以下方法再次编译该文件:
ocamlfind ocamlc -package js_of_ocaml -package js_of_ocaml-toplevel -linkpkg -o main.byte main.ml
js_of_ocaml main.byte
但我收到警告:
来自ocamlfind
的警告:
findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /usr/lib/ocaml, /usr/lib/ocaml/compiler-libs
来自js_of_ocaml
可执行文件的警告:
There are some missing primitives
Dummy implementations (raising 'Failure' exception) will be used if they are not available at runtime.
You can prevent the generation of dummy implementations with the commandline option '--disable genprim'
Missing primitives provided by +dynlink.js:
caml_add_debug_info
caml_dynlink_add_primitive
caml_dynlink_get_current_libs
caml_dynlink_lookup_symbol
caml_dynlink_open_lib
caml_remove_debug_info
Missing primitives provided by +toplevel.js:
caml_get_current_environment
caml_get_section_table
caml_invoke_traced_function
caml_realloc_global
caml_reify_bytecode
caml_static_alloc
caml_static_free
caml_static_release_bytecode
caml_terminfo_setup
我的问题是:编译使用JsooTop
模块的文件的正确方法是什么?
首先,确保所需的OPAM包存在:
opam install js_of_ocaml js_of_ocaml-toplevel
要构建使用JsooTop
模块的程序,请以这种方式编译文件:
ocamlfind ocamlc -package js_of_ocaml -package js_of_ocaml-toplevel -linkpkg -o main.byte main.ml
js_of_ocaml --toplevel --dynlink +dynlink.js +toplevel.js main.byte
请注意包含--toplevel
,--dynlink
,+dynlink.js
和+toplevel.js
。上面的命令将生成一个名为main.js
的JavaScript文件。