no such file to load -- zlib (LoadError)

ubuntu下从源码安装ruby：
./Configure –prefix=/usr/local/ruby-1.9.1
sudo make && make install
装完后试试gem list --local出现no such file to load -- zlib (LoadError)
，sudo apt-get install zlib1g-dev即可，然后到源码目录的ext/zlib下
ruby extconf.rb
make && sudo make install。

plus：安装ubuntu下cpu温度查看软件
sudo apt-get install sensors-applet