Question

我最近一直试图让OCaml工作，并且解释器工作正常，我无法使用它构建本机可执行文件。这是我的计划：

let () = print_endline "Hello, World!"

现在，如果我运行ocaml program.ml，我会得到Hello, World!的预期输出。但是，如果我运行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program.ml.depends存在。再次运行我得到：

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！？！？！？！内容为my_prog.ml:。另请注意，_build目录包含以下文件：_digests，_log，program.ml和sanatize.sh。下面是使用-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，但它不起作用，当我在文本编辑器中打开它时，它以!<symlink>开头。使用readlink后，它指向不存在的_build/program.native。在这一点上，我很难过，不知道下一步该去哪里。让这种编程语言发挥作用是一件很遗憾的事情。

我宁愿不必双重启动/安装vm只是为了编译OCaml。

最后一件事，我将如何安装OPAM？

Answer 1

1）不要将OCaml安装到包含空白字符（如“C：\ Program Files ...”），非ascii字符或其他特殊字符（如“〜＃？...”）的路径中）。您的构建路径也不应包含此类字符。它迟早会导致问题，因为所有常见的构建工具要么依赖于cygwin（因此也是unix约定），要么太愚蠢而无法正确引用。（此外，您的构建路径看起来很可疑。'C：\ Users \ User'通常包含许多与您的项目无关的其他文件。将您的文件放到专用文件夹中。）

2）如果要编译为本机代码，$ PATH中必须存在C工具链（mingw-w64或msvc）。

3）您可以使用我为cygwin和mingw-w64编译器定制的opam和OCaml构建：https://github.com/fdopen/opam-repository-mingw。如果满足要求（安装了所有必需的cygwin软件包，用户名/构建路径中没有空格，在$ PATH中没有替代的OCaml安装），它运行良好。

Bizare错误，我无法在Windows上构建OCaml程序

1 个答案: