ruby 1.9 irb rails console不能用readline问题_Ruby_编程开发_程序员俱乐部

问题现象就是

引用
Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.
You may follow 'rvm notes' for dependencies and/or read the docs page https://rvm.beginrescueend.com/packages/readline/ . Be sure you 'rvm remove X ; rvm install X' to re-compile your ruby with readline support after obtaining the readline libraries.



标准的解决办法是
https://rvm.beginrescueend.com/packages/readline/

问题是我一进行到这一步就有问题

$ cd $HOME/.rvm/src/ruby-1.9.2-p0/ext/readline
$ ruby extconf.rb -- --with-readline-dir="$HOME/.rvm/usr"

引用checking for tgetnum() in -lncurses... yes
checking for readline/readline.h... yes
checking for readline/history.h... yes
checking for readline() in -lreadline... no


后来发现两个问题：
1. 路径

ruby extconf.rb -- --with-readline-dir='/home/ra/.rvm/usr/include/readline'

一个是没有装

sudo aptitude install libreadline-dev