title: Can't locate Switch.pm
body: <p>How do I solve this error?</p>
  
  <pre><code>Can't locate Switch.pm in @INC (you may need to install the Switch module) (@INC contains: /etc/perl /usr/local/lib/perl/5.18.2 /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl .) at external/webkit/Source/WebCore/make-hash-tools.pl line 23.
  BEGIN failed--compilation aborted at external/webkit/Source/WebCore/make-hash-tools.pl line 23.
  make: *** [out/target/product/generic/obj/STATIC_LIBRARIES/libwebcore_intermediates/Source/WebCore/html/DocTypeStrings.cpp] Error 2
  </code></pre>