【问题标题】:Error compiling Ejabberd dependency of a Phoenix application with Mix: could not compile dependency :ejabberd, "mix compile" failed使用 Mix 编译 Phoenix 应用程序的 Ejabberd 依赖项时出错:无法编译依赖项:ejabberd,“mix compile”失败
【发布时间】:2017-05-13 05:01:44
【问题描述】:

我一直在尝试将 Ejabberd 嵌入到 Phoenix 网络应用程序中。为此,我尝试关注this tutorial。步骤如下:

  • 安装了ubuntu/xenial64Vagrant盒子。

  • 按照official guide安装Elixir。

  • 按照official guide安装Phoenix。

  • 安装了一些包来成功编译 Phoenix 的种子应用依赖:sudo apt install build-essential libssl-dev libyaml-cpp-dev libyaml-dev libpython2.7-dev

  • 我已将 ejabberd 依赖项添加到 mix.exs 文件中:

    defmodule PhoenixEjabberd.Mixfile do
      use Mix.Project
    
      def project do
        [app: :phoenix_ejabberd,
         version: "0.0.1",
         elixir: "~> 1.2",
         elixirc_paths: elixirc_paths(Mix.env),
         compilers: [:phoenix, :gettext] ++ Mix.compilers,
         build_embedded: Mix.env == :prod,
         start_permanent: Mix.env == :prod,
         aliases: aliases(),
         deps: deps()]
      end
    
      # Configuration for the OTP application.
      #
      # Type `mix help compile.app` for more information.
      def application do
        [mod: {PhoenixEjabberd, []},
         applications: [:phoenix, :phoenix_pubsub, :phoenix_html, :cowboy, 
                        :logger, :ejabberd, :gettext,
                        :phoenix_ecto, :postgrex]]
      end
    
      # Specifies which paths to compile per environment.
      defp elixirc_paths(:test), do: ["lib", "web", "test/support"]
      defp elixirc_paths(_),     do: ["lib", "web"]
    
      # Specifies your project dependencies.
      #
      # Type `mix help deps` for examples and options.
      defp deps do
        [{:phoenix, "~> 1.2.1"},
         {:phoenix_pubsub, "~> 1.0"},
         {:phoenix_ecto, "~> 3.0"},
         {:postgrex, ">= 0.0.0"},
         {:phoenix_html, "~> 2.6"},
         {:phoenix_live_reload, "~> 1.0", only: :dev},
         {:gettext, "~> 0.11"},
         {:cowboy, "~> 1.0"},
         {:ejabberd, "~> 16.12", github: "processone/ejabberd"}
       ]
      end
    
      # Aliases are shortcuts or tasks specific to the current project.
      # For example, to create, migrate and run the seeds file at once:
      #
      #     $ mix ecto.setup
      #
      # See the documentation for `Mix` for more info on aliases.
      defp aliases do
        ["ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
         "ecto.reset": ["ecto.drop", "ecto.setup"],
         "test": ["ecto.create --quiet", "ecto.migrate", "test"]]
      end
    end
    
  • 执行mix do deps.get, compile

  • 出现大量错误,主要是未定义的函数和变量。我把完整的日志放在this Gist

为什么会出现这些错误?有人成功编译了ejabberd 依赖项吗?如何?谢谢你的时间:)。

【问题讨论】:

    标签: erlang elixir ejabberd phoenix-framework elixir-mix


    【解决方案1】:

    由于未知原因,ejabberd 无法从根项目文件夹编译。为了编译它,我做了以下工作:

    mix deps.get # to retrieve ejabberd 
    cd deps/ejabberd
    mix do deps.get, compile
    cd - # to the project root
    mix compile # now the project would compile
    

    【讨论】:

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