为什么在Ubuntu中安装JSON gem时出错？ [英] Why do I get an error installing the JSON gem in Ubuntu?

问题描述

使用Ubuntu，当我运行 bundle install 来设置我的Rails环境时，它会在JSON gem安装过程中引发错误：

 使用本机扩展安装json（1.7.3）
 Gem :: Installer :: ExtensionBuildError：错误：无法构建gem本机扩展。 
 
 /usr/bin/ruby1.9.1 extconf.rb 
 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require'：can not load such file  -  mkmf（LoadError）
 from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require'
 from extconf.rb：1：in<<主要>'
 
 Gem文件将保留安装在/home/danny/.bundler/tmp/2040/gems/json-1.7.3中进行检查。 
记录到/home/danny/.bundler/tmp/2040/gems/json-1.7.3/ext/json/ext/parser/gem_make.out 
的结果安装json时发生错误（1.7 .3）和Bundler无法继续。 
确保`gem install json -v'1.7.3'`在绑定之前成功。 
  

当我尝试只安装JSON 1.7.3 gem时，它也给我一个错误：

 构建原生扩展。这可能需要一段时间... 
错误：安装json时出错：
错误：无法构建gem本机扩展。 
 
 /usr/bin/ruby1.9.1 extconf.rb 
 /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require'：can not load such file  -  mkmf（LoadError）
 from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require'
 from extconf.rb：1：in<< main>'
 
 Gem文件将保留安装在/var/lib/gems/1.9.1/gems/json-1.7.3中进行检查。 
结果记录到/var/lib/gems/1.9.1/gems/json-1.7.3/ext/json/ext/parser/gem_make.out 
  

我已经安装了RVM并运行Ruby 1.9.3;为什么不能安装JSON gem？

解决方案

安装 ruby​​1.9.1-dev

code> package应该解决这个问题：

  sudo apt-get install ruby​​1.9.1-dev 
  

Using Ubuntu, when I run "bundle install" to set up my Rails environment, it throws an error during the JSON gem installation:

Installing json (1.7.3) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb 
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:1:in `<main>'

Gem files will remain installed in /home/danny/.bundler/tmp/2040/gems/json-1.7.3 for inspection.
Results logged to /home/danny/.bundler/tmp/2040/gems/json-1.7.3/ext/json/ext/parser/gem_make.out
An error occured while installing json (1.7.3), and Bundler cannot continue.
Make sure that `gem install json -v '1.7.3'` succeeds before bundling.

When I try installing only the JSON 1.7.3 gem it also gives me an error:

Building native extensions.  This could take a while...
ERROR:  Error installing json:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:1:in `<main>'

Gem files will remain installed in /var/lib/gems/1.9.1/gems/json-1.7.3 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/json-1.7.3/ext/json/ext/parser/gem_make.out

I've installed RVM and am running Ruby 1.9.3; Why can't it install the JSON gem?

解决方案

Installing the ruby1.9.1-dev package should fix this for you:

sudo apt-get install ruby1.9.1-dev

这篇关于为什么在Ubuntu中安装JSON gem时出错？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！