title: 'gcc-4.2' failed with exit status 1 when installing bcrypt
body: <p>Hi all im new to django and python trying to install bcrypt which is needed for building a piece of django code im trying to run on my system, im running into a problem as below</p>
  
  <p>im using python 2.7 and v1.4 django</p>
  
  <pre><code>running build
  
  running build_py
  
  running build_ext
  
  building 'bcrypt._bcrypt' extension
  
  gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.6.sdk -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c bcrypt/bcrypt_python.c -o build/temp.macosx-10.6-intel-2.7/bcrypt/bcrypt_python.o
  
  In file included from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/unicodeobject.h:4,
  
                   from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/Python.h:85,
  
                   from bcrypt/bcrypt_python.c:17:
  
  /Developer/SDKs/MacOSX10.6.sdk/usr/include/stdarg.h:4:25: error: stdarg.h: No such file or directory
  
  In file included from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/unicodeobject.h:4,
  
  from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/Python.h:85,
  
  from bcrypt/bcrypt_python.c:17:
  
  /Developer/SDKs/MacOSX10.6.sdk/usr/include/stdarg.h:4:25: error: stdarg.h: No such file or directory
  
  lipo: can't figure out the architecture type of: /var/folders/2s/n9wb5x4534nfs1cbrlph32v00000gp/T//ccb7N3qq.out
  
  error: command 'gcc-4.2' failed with exit status 1
  
  ----------------------------------------
  Command /Users/Kinnovate/Downloads/dwaiter-django-bcrypt-913d86b/my_new_env/bin/python -c "import setuptools;__file__='/Users/Kinnovate/Downloads/dwaiter-django-bcrypt-913d86b/my_new_env/build/py-bcrypt/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /var/folders/2s/n9wb5x4534nfs1cbrlph32v00000gp/T/pip-yONWs2-record/install-record.txt --install-headers /Users/Kinnovate/Downloads/dwaiter-django-bcrypt-913d86b/my_new_env/bin/../include/site/python2.7 failed with error code 1
  </code></pre>
  
  <p>how do i fix this?</p>