我最近一直试图让 OCaml 工作，并且解释器工作正常，我只是无法用它构建本机可执行文件。这是我的程序：
let () = print_endline "Hello, World!"
现在，如果我运行，ocaml program.ml我会得到预期的输出Hello, World!。但是，如果我跑步，ocamlbuild program.native我会得到：
mkdir 'C:\Users\User\_build'
'''C:\Program Files\OCaml\bin/ocamldep.opt' -modules program.ml > program.ml.depends
Exception Sys_error("program.ml.depends: No such file or directory").
然而，如果我查看目录C:\Users\User\，我可以看到它program.ml.depends存在。再次运行它，我得到：
SANITIZE: a total of 1 file that should probably not be in your source tree
has been found. A script shell file "C:\\Users\\User\\_build/sanitize.sh"
is being created. Check this script and run it to remove unwanted files or
use other options (such as defining hygiene exceptions or using the
-no-hygiene option).
IMPORTANT: I cannot work with leftover compiled files.
ERROR: Leftover dependency files:
File program.ml.depends in . has suffix .ml.depends
Exiting due to hygiene violations.
所以它确实存在！？！？！？！内容是my_prog.ml:。旁注，该_build目录包含以下文件：_digests、_log、program.ml 和 sanatize.sh。以下是我使用 -verbose 10 运行命令时的输出：
mkdir 'C:\Users\User\_build'
Doing sanity checks
include directories are: [ "." ]
==> program.native
====> program.cmx
======> program.mlpack
======> program.ml
program.ml exists in source dir -> import it
======> program.ml.depends
========> program.ml
program.ml already built
start rule ocaml dependencies ml (%=program )
dyndeps: {. .}
mid rule ocaml dependencies ml (%=program ): cache miss: a product is not in build dir (program.ml.depends)
'''C:\Program Files\OCaml\bin/ocamldep.opt' -modules program.ml > program.ml.depends
resource_changed: program.ml.depends
end rule ocaml dependencies ml (%=program )
======> program.cmi
========> program.mli
==========> program.mly
========> program.mlpack
program.mlpack already failed
========> program.ml
program.ml already built
========> program.ml.depends
program.ml.depends already built
start rule ocaml: ml -> cmo & cmi (%=program )
Exception Sys_error("program.ml.depends: No such file or directory").
如果我强迫它：
include directories are: [ "." ]
==> program.native
====> program.cmx
======> program.mlpack
======> program.ml
program.ml exists and up to date
======> program.ml.depends
program.ml.depends exists in source dir -> import it
======> program.cmi
========> program.mli
==========> program.mly
========> program.mlpack
program.mlpack already failed
========> program.ml
program.ml already built
========> program.ml.depends
program.ml.depends already built
start rule ocaml: ml -> cmo & cmi (%=program )
dyndeps: {. .}
mid rule ocaml: ml -> cmo & cmi (%=program ): cache miss: a product is not in build dir (program.cmo)
'''C:\Program Files\OCaml\bin/ocamlc.opt' -c -o program.cmo program.ml
resource_changed: program.cmo
resource_changed: program.cmi
end rule ocaml: ml -> cmo & cmi (%=program )
start rule ocaml: ml & cmi -> cmx & o (%=program )
dyndeps: {. .}
mid rule ocaml: ml & cmi -> cmx & o (%=program ): cache miss: a product is not in build dir (program.cmx)
'''C:\Program Files\OCaml\bin/ocamlopt.opt' -c -o program.cmx program.ml
resource_changed: program.cmx
resource_changed: program.o
end rule ocaml: ml & cmi -> cmx & o (%=program )
====> program.o
program.o already built
start rule ocaml: cmx* & o* -> native (%=program )
prepare_libs: "program.native" -> [ ]
caml_transitive_closure ~caml_obj_ext:"cmx" ~pack_mode:false
~used_libraries:[ ] [ "program.cmx" ]
packages: {. .}
dependency_map: {::}
used_files: {. program.cmx .}
open_packages: [ ]
lib_index: {::}
dependencies: {::}
caml_transitive_closure: [ "program.cmx" ] -> [ ]
Failure: Link list cannot be empty.
我再次运行相同的命令：
include directories are: [ "." ]
==> program.native
====> program.cmx
program.cmx exists in source dir -> import it
====> program.o
program.o exists in source dir -> import it
start rule ocaml: cmx* & o* -> native (%=program )
prepare_libs: "program.native" -> [ ]
caml_transitive_closure ~caml_obj_ext:"cmx" ~pack_mode:false
~used_libraries:[ ] [ "program.cmx" ]
packages: {. .}
dependency_map: {::}
used_files: {. program.cmx .}
open_packages: [ ]
lib_index: {::}
dependencies: {::}
caml_transitive_closure: [ "program.cmx" ] -> [ "program.cmx" ]
link: [ "program.cmx" ] -o program.native
dyndeps: {. .}
mid rule ocaml: cmx* & o* -> native (%=program ): cache miss: a product is not in build dir (program.native)
'''C:\Program Files\OCaml\bin/ocamlopt.opt' program.cmx -o program.native
resource_changed: program.native
end rule ocaml: cmx* & o* -> native (%=program )
此时我确实得到了一个 program.native 文件，但是它不起作用，当我在文本编辑器中打开它时，它以!<symlink>. 使用后readlink指向_build/program.native哪个不存在。在这一点上，我很困惑，不知道下一步该去哪里。让这种编程语言工作起来如此困难，真是太可惜了。
我宁愿不必为了编译 OCaml 而双启动/安装 vm。
最后一件事，我将如何安装 OPAM？