ruby - 如何安装下载的 ruby​​ gem？

Question

我已经安装了它显示错误的gem：

 gem install --local /home/harish/Downloads/json-1.8.0.gem 
Building native extensions.  This could take a while...
ERROR:  Error installing /home/harish/Downloads/json-1.8.0.gem:
    ERROR: Failed to build gem native extension.

    /usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /usr/share/include/ruby.h


Gem files will remain installed in /home/harish/.gem/ruby/1.9.1/gems/json-1.8.0 for inspection.
Results logged to /home/harish/.gem/ruby/1.9.1/gems/json-1.8.0/ext/json/ext/generator/gem_make.out

Answer 1

我假设您使用的是 Debian 衍生产品。尝试这个：

sudo apt-get install ruby1.9-dev

对于 Fedora，试试这个：

sudo yum install ruby-devel