title: Error installing gnureadline via pip
body: <p>I broke my IPython setup whilst trying to upgrade to IPython 2.0.  The installation fails when <code>gnureadline</code> is being installed.  I originally had <a href="https://stackoverflow.com/questions/22313407/clang-error-unknown-argument-mno-fused-madd-python-package-installation-fa">this problem</a> but I fixed it.  Now I'm getting this error:</p>
  
  <pre><code>cc -bundle -undefined dynamic_lookup -arch x86_64 -arch i386 -Wl,-F. -Qunused-arguments -Qunused-arguments build/temp.macosx-10.9-intel-2.7/Modules/2.x/readline.o readline/libreadline.a readline/libhistory.a -lncurses -o build/lib.macosx-10.9-intel-2.7/gnureadline.so
  
  clang: error: no such file or directory: 'readline/libreadline.a'
  
  clang: error: no such file or directory: 'readline/libhistory.a'
  
  error: command 'cc' failed with exit status 1
  
  ----------------------------------------
  Cleaning up...
  Command /usr/bin/python -c "import setuptools;__file__='/private/var/folders/jj/0w0dd3n16jq4g5579g6c7h040000gn/T/pip_build_root/gnureadline/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/jj/0w0dd3n16jq4g5579g6c7h040000gn/T/pip-iJITYv-record/install-record.txt --single-version-externally-managed failed with error code 1 in /private/var/folders/jj/0w0dd3n16jq4g5579g6c7h040000gn/T/pip_build_root/gnureadline
  Storing complete log in /Users/mc/Library/Logs/pip.log
  </code></pre>
  
  <p>Thanks for any help.</p>