title: ARM toolchain for ubuntu Error while compiling
body: <p>I am trying to make the ARM toolchain in ubuntu. The way it is specified in <a href="http://hri.sourceforge.net/tools/arm-elf-gcc.html" rel="nofollow">http://hri.sourceforge.net/tools/arm-elf-gcc.html</a></p>
  
  <p>I am getting the following error:</p>
  
  <pre><code>Configuring for a x86_64-unknown-linux-gnu host.
  Invalid configuration `x86_64-unknown-linux-gnu': machine `x86_64-unknown' not recognized
  Invalid configuration `x86_64-unknown-linux-gnu': machine `x86_64-unknown' not recognized
  Unrecognized host system name x86_64-unknown-linux-gnu.
  </code></pre>
  
  <p>does anybody have idea whats going wrong here.</p>