无法安装 Twilio gem - libxml 问题

Question

在尝试在常规脚本和 rails 应用程序中安装 twill-ruby gem 时遇到了几个小时的麻烦之后，我来到了专业人士面前。

我得到的错误是“在 Gemfile 中： twilio-ruby 被解析为 5.2.0，这取决于 libxml-ruby "

我尝试将 libxml gem 安装到我的 gem 文件中，但同样失败并出现错误“Gem::Ext::BuildError: ERROR: Failed to build gem native extension.”然后在底部显示“安装 libxml-ruby (3.0.0) 时发生错误，并且 Bundler 无法继续。 在捆绑之前确保gem install libxml-ruby -v '3.0.0' 成功。”

我使用的 rails 版本是 4.2.4，我的操作系统是 MACOS Sierra。当我尝试与 twilio gem 捆绑安装时的整个输出如下。我已经阅读了一些关于 Stack 的文章，但到目前为止没有任何帮助：

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/jameshart/.rvm/gems/ruby-2.3.0/gems/libxml-ruby-3.0.0/ext/libxml
/Users/jameshart/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20170829-79771-thonjl.rb extconf.rb
checking for libxml/xmlversion.h in
/opt/include/libxml2,/opt/local/include/libxml2,/usr/local/include/libxml2,/usr/include/libxml2... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/jameshart/.rvm/rubies/ruby-2.3.0/bin/$(RUBY_BASE_NAME)
    --with-xml2-config
    --without-xml2-config
    --with-xml2-dir
    --without-xml2-dir
    --with-xml2-include
    --without-xml2-include=${xml2-dir}/include
    --with-xml2-lib
    --without-xml2-lib=${xml2-dir}/lib
 extconf failure: need libxml2.

    Install the library or try one of the following options to extconf.rb:

      --with-xml2-config=/path/to/xml2-config
      --with-xml2-dir=/path/to/libxml2
      --with-xml2-lib=/path/to/libxml2/lib
      --with-xml2-include=/path/to/libxml2/include


To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/jameshart/.rvm/gems/ruby-2.3.0/extensions/x86_64-darwin-16/2.3.0/libxml-ruby-3.0.0/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/jameshart/.rvm/gems/ruby-2.3.0/gems/libxml-ruby-3.0.0 for inspection.
Results logged to /Users/jameshart/.rvm/gems/ruby-2.3.0/extensions/x86_64-darwin-16/2.3.0/libxml-ruby-3.0.0/gem_make.out

An error occurred while installing libxml-ruby (3.0.0), and Bundler cannot continue.
Make sure that `gem install libxml-ruby -v '3.0.0'` succeeds before bundling.

In Gemfile:
  twilio-ruby was resolved to 5.2.0, which depends on
    libxml-ruby

Answer 1

我找到了解决办法！ （在 Debian 9 上运行）

sudo apt-get install -y libxml2-dev

gem install libxml-ruby -v '3.0.0' 

bundle install

似乎是 libxml-ruby 尝试使用 libxml2 的问题