安装ruby
yum install ruby
装好以后测试一下
ruby -v
ruby 1.8.7 (2012-06-29 patchlevel 370) [i386-linux]
ok 已经变成1.8.7 了
安装rubygems
yum install rubygems
然后我想安装jekyll
gem install jekyll
等了好几分钟，报错如下
Building native extensions. This Could take a while...
ERROR: Error installing jekyll:
ERROR: Failed to build gem native extension.
/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/ruby.h
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/ffi-1.9.14 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/ffi-1.9.14/ext/ffi_c/gem_make.out
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