RVM Ruby 2.3.0 DevKit是否未安装？

我正在尝试在AmazonWeb服务上安装RubyonRails

• 与RVM一起安装的ruby-2.3.0[x86_64]
• rvm 1.26.11
• 轨道5.0.0beta3
• 卡皮斯特拉诺3.4

部署到服务器时，在使用bundler安装依赖项之前，一切都可以正常运行。似乎是说DevKit没有与Ruby一起安装

...
Installing mini_portile2 2.0.0
Using json 1.8.3
Installing nio4r 1.2.1 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/www/myWebsite/shared/bundle/ruby/2.3.0/gems/nio4r-1.2.1/ext/nio4r
/home/ubuntu/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160305-3397-alwetw.rb extconf.rb
checking for unistd.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/home/ubuntu/.rvm/rubies/ruby-2.3.0/bin/$(RUBY_BASE_NAME)
/home/ubuntu/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from /home/ubuntu/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/mkmf.rb:587:in `try_cpp'
        from /home/ubuntu/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/mkmf.rb:1091:in `block in have_header'
...

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如何检查RVM是否正确安装了DevKit？或者问题出在别的地方？它还提到了丢失的库/头

啊，刚刚找到并阅读了那个日志文件，它指向了一个丢失的库

gmp

以下命令修复了该问题：

sudo apt-get install libgmp3-dev

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你是最好的人。