2006-08-29昨日作ったRubyの環境にmongrelをインストールしようとしたらこんなエラーが出た。 Building native extensions. This could take a while... extconf.rb:1:in `require': no such file to load -- mkmf (LoadError) from extconf.rb:1 ERROR: While executing gem ... (RuntimeError) ERROR: Failed to build gem native extension. Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/mongrel-0.3.13.1 for inspection.mkmfってなにさ？って調べてみたらこんなのを見つけまし
