compiler-errors - Windows 上的 Addict 十六进制包依赖项错误在 Mac 上不会发生

Question

我尝试安装 addict包在我的 Phoenix 项目中，但是我收到错误。 我在同事的 Mac 上尝试了完全相同的过程，但他没有收到错误消息，而我在 Windows 上却收到了错误消息。 该错误来自 comeonin 依赖项。我也在 Phoenix 0.14 和昨天发布的 0.15 更新中尝试过。

重新创建的步骤:

1. 创建一个新项目并运行它

   $ mix phoenix.new testAddict
   $ cd testAddict
   $ mix ecto.create
   $ mix phoenix.server
   

2. 在 mix.exs 中添加上瘾者:

   defp deps do
     [{:phoenix, "~> 0.15"},
       {:phoenix_ecto, "~> 0.8"},
       {:postgrex, ">= 0.0.0"},
       {:phoenix_html, "~> 1.4"},
       {:phoenix_live_reload, "~> 0.5", only: :dev},
       {:addict, "~> 0.0.5"},
       {:cowboy, "~> 1.0"}]
   end
   

3. 编译依赖项:

   $ mix deps.get

结果:

Running dependency resolution
Dependency resolution completed successfully
  addict: v0.0.5
  comeonin: v0.11.3
  mailgun: v0.0.2
* Getting addict (Hex package)
Checking package (https://s3.amazonaws.com/s3.hex.pm/tarballs/addict-0.0.5.tar)
Using locally cached package
Unpacked package tarball (c:/Users/mesos_000/.hex/packages/addict-0.0.5.tar)
* Getting mailgun (Hex package)
Checking package (https://s3.amazonaws.com/s3.hex.pm/tarballs/mailgun-0.0.2.tar)
Using locally cached package
Unpacked package tarball (c:/Users/mesos_000/.hex/packages/mailgun-0.0.2.tar)
* Getting comeonin (Hex package)
Checking package (https://s3.amazonaws.com/s3.hex.pm/tarballs/comeonin-0.11.3.tar)
Using locally cached package
Unpacked package tarball (c:/Users/mesos_000/.hex/packages/comeonin-0.11.3.tar)

再次运行 Phoenix 项目:

$ mix phoenix.server

结果(这是错误):

==> mailgun
Compiled lib/mailgun.ex
Compiled lib/client.ex
Generated mailgun app
==> comeonin
could not compile dependency comeonin, mix compile failed. You can recompile this dependency with `mix deps.compile comeonin` or update it with `mix deps.update comeonin`

** (ErlangError) erlang error: :enoent
    (elixir) lib/system.ex:440: System.cmd("nmake", ["/F", "Makefile.win", "priv\\bcrypt_nif.dll"], [stderr_to_stdout: true])
    mix.exs:15: Mix.Tasks.Compile.Comeonin.run/1
    (elixir) lib/enum.ex:977: anonymous fn/3 in Enum.map/2
    (elixir) lib/enum.ex:1261: Enum."-reduce/3-lists^foldl/2-0-"/3
    (elixir) lib/enum.ex:977: Enum.map/2
    (mix) lib/mix/tasks/compile.all.ex:15: Mix.Tasks.Compile.All.run/1
    (mix) lib/mix/tasks/compile.ex:64: Mix.Tasks.Compile.run/1
    (mix) lib/mix/tasks/deps.compile.ex:105: anonymous fn/2 in Mix.Tasks.Deps.Compile.do_mix/1

尝试建议:

$ mix deps.compile comeonin

结果:

Running dependency resolution
Dependency resolution completed successfully
  comeonin: v0.11.3
$ mix phoenix.server

结果:与上面相同的错误。

$ mix deps.update comeonin

结果:

==> comeonin
could not compile dependency comeonin, mix compile failed. You can recompile this dependency with `mix deps.compile comeonin` or update it with `mix deps.update comeonin`

** (ErlangError) erlang error: :enoent
    (elixir) lib/system.ex:440: System.cmd("nmake", ["/F", "Makefile.win", "priv\\bcrypt_nif.dll"], [stderr_to_stdout: true])
    mix.exs:15: Mix.Tasks.Compile.Comeonin.run/1
    (elixir) lib/enum.ex:977: anonymous fn/3 in Enum.map/2
    (elixir) lib/enum.ex:1261: Enum."-reduce/3-lists^foldl/2-0-"/3
    (elixir) lib/enum.ex:977: Enum.map/2
    (mix) lib/mix/tasks/compile.all.ex:15: Mix.Tasks.Compile.All.run/1
    (mix) lib/mix/tasks/compile.ex:64: Mix.Tasks.Compile.run/1
    (mix) lib/mix/tasks/deps.compile.ex:105: anonymous fn/2 in Mix.Tasks.Deps.Compile.do_mix/1

编辑: 根据 José Valim 的建议，我安装了 Visual Studio Express 来获取 nmake。我还必须从 erlang 站点安装更新版本的 erlang+otp。 最后，我现在收到一个不同但仍然相关的错误:

C:\Users\mesos_000\Desktop\elixir Projects\testeAddict>mix deps.compile comeonin
==> comeonin

Microsoft (R) Program Maintenance Utility Version 12.00.21005.1
Copyright (C) Microsoft Corporation.  All rights reserved.

'priv\bcrypt_nif.dll' is up-to-date

Compiled lib/comeonin/config.ex
Compiled lib/comeonin/pbkdf2_base64.ex
Compiled lib/comeonin/bcrypt_base64.ex
Compiled lib/comeonin/tools.ex
Compiled lib/comeonin.ex
Compiled lib/comeonin/password.ex
Compiled lib/comeonin/pbkdf2.ex

== Compilation error on file lib/comeonin/bcrypt.ex ==
** (MatchError) no match of right hand side value: {:error, :on_load_failure}
    (stdlib) erl_eval.erl:669: :erl_eval.do_apply/6

could not compile dependency comeonin, mix compile failed. You can recompile this dependency with `mix deps.compile comeonin` or update it with `mix deps.update comeonin`

此外，在我的 Ubuntu VM 上安装 erlang 完全解决了该问题。仅在我的 Windows 8.1 中问题仍然存在。

Answer 1

解决 comeonin 依赖错误的说明已更新，我按照他们所说的操作成功解决了这个问题:

打开 Visual Studio 的开发人员命令提示符(在 Windows 8、8.1 和 10 中，它位于 Visual Studio 应用菜单下)。

$ cd "\Program Files (x86)\Microsoft Visual Studio 12.0\VC"
$ vcvarsall amd64

comeonin 依赖项现在应该可以编译。