title: Error when installing Ruby on Rails: "Failed to build gem native extension"
body: <p>I'm running Crunchbang 11 (Debian-based). </p>
  
  <p>I'm trying to install Ruby on Rails, like this:</p>
  
  <pre><code>gem install rails --version 4.0.0
  </code></pre>
  
  <p>I get the error "Failed to build gem native extension".</p>
  
  <p>My ruby is version <code>2.0.0p247</code>, my RubyGems is <code>2.0.0</code>.</p>
  
  <p>What's the issue here?</p>
  
  <hr>
  
  <p>This is the full error output:</p>
  
  <pre><code>Building native extensions.  This could take a while...
  ERROR:  Error installing rails:
      ERROR: Failed to build gem native extension.
  
      /home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247/bin/ruby extconf.rb
  creating Makefile
  
  make
  compiling atomic_reference.c
  linking shared-object atomic_reference.so
  
  make install
  /usr/bin/install -c -m 0755 atomic_reference.so /home/erlkoenig/.rvm/gems/ruby-2.0.0-p247/gems/atomic-1.1.10/lib/home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/x86_64-linux
  /usr/bin/install: cannot create regular file `/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247/gems/atomic-1.1.10/lib/home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/x86_64-linux': No such file or directory
  make: *** [install-so] Error 1
  
  
  Gem files will remain installed in /home/erlkoenig/.rvm/gems/ruby-2.0.0-p247/gems/atomic-1.1.10 for inspection.
  Results logged to /home/erlkoenig/.rvm/gems/ruby-2.0.0-p247/gems/atomic-1.1.10/ext/gem_make.out
  </code></pre>
  
  <p>My <code>env</code>:</p>
  
  <pre><code>ORBIT_SOCKETDIR=/tmp/orbit-erlkoenig
  SSH_AGENT_PID=2695
  rvm_bin_path=/home/erlkoenig/.rvm/bin
  GEM_HOME=/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247
  SHELL=/bin/bash
  TERM=xterm-256color
  XDG_SESSION_COOKIE=9e0343c07c890bd2d60ee6a750f36c6c-1373892339.852749-193038580
  IRBRC=/home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247/.irbrc
  WINDOWID=39845892
  GNOME_KEYRING_CONTROL=/home/erlkoenig/.cache/keyring-g6PRS5
  MY_RUBY_HOME=/home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247
  USER=erlkoenig
  LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:
  rvm_path=/home/erlkoenig/.rvm
  SSH_AUTH_SOCK=/tmp/ssh-XVmUxMD7LHwi/agent.2651
  rvm_prefix=/home/erlkoenig
  PATH=/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247/bin:/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247@global/bin:/home/erlkoenig/.rvm/rubies/ruby-2.0.0-p247/bin:/home/erlkoenig/.rvm/bin:/home/erlkoenig/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/erlkoenig/.rvm/bin:/home/erlkoenig/.scripts:/home/erlkoenig/.scripts/netlogo-5.0.3:/opt/node/bin
  MAIL=/var/mail/erlkoenig
  PWD=/home/erlkoenig
  EDITOR=vim
  GNOME_KEYRING_PID=2575
  LANG=en_US.UTF-8
  rvm_env_string=ruby-2.0.0-p247
  rvm_version=1.21.9 (stable)
  SHLVL=1
  HOME=/home/erlkoenig
  rvm_ruby_string=ruby-2.0.0-p247
  LOGNAME=erlkoenig
  GEM_PATH=/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247:/home/erlkoenig/.rvm/gems/ruby-2.0.0-p247@global
  DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-9eOdnYZelY,guid=a5db4ca68e107a48a04c8b8e51e3eef4
  DISPLAY=:0.0
  RUBY_VERSION=ruby-2.0.0-p247
  XAUTHORITY=/home/erlkoenig/.Xauthority
  COLORTERM=gnome-terminal
  _=/usr/bin/env
  </code></pre>