ruby-on-rails - 安装 nio4r 时出错

Question

请帮帮我。我尝试安装 gem nio4r，但此日志有错误:

ERROR:  Error installing nio4r:
    ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.3.0/gems/nio4r-1.2.1/ext/nio4r
/usr/bin/ruby2.3 -r ./siteconf20161020-13985-1c6zxok.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.3.0/gems/nio4r-1.2.1 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nio4r-1.2.1/gem_make.out

我有 ubuntu 16.04、ruby 2.3.0、rails 5.0.0.1。

(对于其他一些 gem，我有类似的错误(gem bcrypt))

我必须做些什么来修复这个错误？谢谢!

Answer 1

首先尝试安装build essentials:

sudo apt-get install build-essential patch

如果还是不行，尝试安装 ruby​​-dev:

sudo apt-get install ruby-dev zlib1g-dev liblzma-dev

问候