安装gollum提示Failed to build gem native extension的解决

安装gollum提示Failed to build gem native extension的解决

发表于 2013 年 5 月 29 日

gollum是GitHub的一个开源Wiki引擎，老蔡准备用来写代码文档，结果安装就出错了。

直接sudo gem install gollum来安装gollum会提示错误

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ERROR :    Error installing gollum :          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 / posix - spawn - 0.3.6 for inspection . Results logged to / var / lib / gems / 1.9.1 / gems / posix - spawn - 0.3.6 / ext / gem_make . out

从git://github.com/gollum/gollum.git源码bundle install也会提示

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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)                                 Gem files will remain installed in /home/me/.bundler/tmp/9630/gems/github-markdown-0.5.3 for inspection.                             Results logged to /home/me/.bundler/tmp/9630/gems/github-markdown-0.5.3/ext/markdown/gem_make.out                                     An error occurred while installing github-markdown (0.5.3), and Bundler cannot continue. Make sure that `gem install github-markdown -v ' 0.5.3' ` succeeds before bundling .

解决方法：

1	sudo apt - get install ruby1 . 9.1 - dev

原因分析：

扩展库是需要编译安装，没有dev就找不到ruby的库，所以要安装dev版本的ruby，虽然老蔡的ruby版本是ruby 1.9.3p0，但是安ruby1.9.1-dev也可以解决这个问题，大概是因为两个版本的ruby改动不大吧。

2013-09-22更新：发现在ruby 2.0下，gollum不能正确通过gem安装成功，所以还是安装ruby 1.9版本的为宜。