title: Configuring issue when install a version of Ruby with RVM
body: <p>RVM is installed and running. I am trying to install Ruby 2.0, but this happens with any version I try to install. This is a fresh install of rvm without ruby. I am running Debian Squeeze.</p>
  
  <p>After running</p>
  
  <pre class="lang-none prettyprint-override"><code>rvm install 2.0
  </code></pre>
  
  <p>I get this error:</p>
  
  <pre class="lang-none prettyprint-override"><code>Installing Ruby from source to: /home/user/.rvm/rubies/ruby-2.0.0-p0, this may take a while depending on your cpu(s)...
      ruby-2.0.0-p0 - #downloading ruby-2.0.0-p0, this may take a while depending on your connection...
      ruby-2.0.0-p0 - #extracted to /home/user/.rvm/src/ruby-2.0.0-p0 (already extracted)
      ruby-2.0.0-p0 - #configuring...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
      Error running './configure --prefix=/home/user/.rvm/rubies/ruby-2.0.0-p0 --disable-install-doc --enable-shared',
      please read /home/user/.rvm/log/ruby-2.0.0-p0/configure.log
      There has been an error while running configure. Halting the installation.
  </code></pre>
  
  <p>I see this error when I read /home/user/.rvm/log/ruby-2.0.0-p0/configure.log</p>
  
  <pre class="lang-none prettyprint-override"><code>checking if make is GNU make... ./configure: line 18790: make: command
  not found no checking for safe null command for make... configure:
  error: no candidate for safe null command
  </code></pre>
  
  <p>I then run:</p>
  
  <pre class="lang-none prettyprint-override"><code>rvm install 2.0.0 --autolibs=4 --debug
  </code></pre>
  
  <p>Then I get this error</p>
  
  <pre class="lang-none prettyprint-override"><code>ruby-2.0.0-p0 - #configuring... Error running './configure
  --prefix=/home/user/.rvm/rubies/ruby-2.0.0-p0 --disable-install-doc --enable-shared', please read /home/user/.rvm/log/ruby-2.0.0-p0/configure.log There has been an error while running configure. Halting the installation.
  __rvm_rm_rf already gone: /home/user/.rvm/tmp/26623*
  </code></pre>
  
  <p>I am not sure what to do after this point</p>