我正在尝试在Windows上为Ruby安装ncurses。 我之前没有在我的电脑上安装过ncurses。 我认为安装"ruby devkit"就足够了,但现在我被要求指定选项......我不知道该选择哪些选项,或者是否需要进行/安装其他操作才能安装gem:
C:\Ruby193\Devkit>gem install ncurses -- --ruby=C:/Ruby193/bin/ruby --without-make-prog --without-opt-dir
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing ncurses:
ERROR: Failed to build gem native extension.
C:/Ruby193/bin/ruby.exe extconf.rb --ruby=C:/Ruby193/bin/ruby --without-make-prog --without-opt-dir
C:/Ruby193/lib/ruby/1.9.1/shellwords.rb:35:in `shellsplit': undefined method `scan' for false:FalseClass (NoMethodError)
from C:/Ruby193/lib/ruby/1.9.1/mkmf.rb:2216:in `<top (required)>'
from C:/Ruby193/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from C:/Ruby193/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:22:in `<main>'
Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/ncurses-0.9.1 for inspection.
Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/ncurses-0.9.1/./gem_make.out
真是太麻烦了,我只想安装这个宝石,这样我就可以运行这个程序:
require 'curses'
cols = Curses.stdscr.maxx
msg = "random_string"
str = msg.center(msg.length + cols - msg.length - 5 - 3)
puts "<!-- #{str}-->"