title: gcc-4.0 failed on mac 10.6.8 while installing Scrapy how can i overcome this?
body: <p>I used pip install Scrapy on my mac 10.6.8 and i get the error below
  can anyone help me please?</p>
  
  <pre><code>creating build/lib.macosx-10.3-fat-2.7/twisted/internet/iocpreactor/iocpsupport
  
  copying twisted/internet/iocpreactor/iocpsupport/iocpsupport.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/internet/iocpreactor/iocpsupport
  
  copying twisted/internet/iocpreactor/iocpsupport/winsock_pointers.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/internet/iocpreactor/iocpsupport
  
  copying twisted/python/_epoll.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/python
  
  copying twisted/python/_initgroups.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/python
  
  copying twisted/runner/portmap.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/runner
  
  copying twisted/test/raiser.c -&gt;
  build/lib.macosx-10.3-fat-2.7/twisted/test
  
  running build_ext
  
  gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -arch ppc -arch i386
  -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c conftest.c -o conftest.o
  
  /usr/libexec/gcc/powerpc-apple-darwin10/4.0.1/as: assembler
  (/usr/bin/../libexec/gcc/darwin/ppc/as or
  /usr/bin/../local/libexec/gcc/darwin/ppc/as) for architecture ppc not
  installed
  
  Installed assemblers are:
  
  /usr/bin/../libexec/gcc/darwin/x86_64/as for architecture x86_64
  
  /usr/bin/../libexec/gcc/darwin/i386/as for architecture i386
  
  lipo: can't open input file:
  /var/folders/jk/jkTyAFDWEC8fvZts+C7Jwk+++TI/-Tmp-//ccBIdB4l.out (No
  such file or directory)
  
  gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -arch ppc -arch i386
  -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c conftest.c -o conftest.o
  
  conftest.c:1:23: error: sys/epoll.h: No such file or directory
  
  conftest.c:1:23: error: sys/epoll.h: No such file or directory
  
  lipo: can't figure out the architecture type of:
  /var/folders/jk/jkTyAFDWEC8fvZts+C7Jwk+++TI/-Tmp-//cceIymsT.out
  
  building 'twisted.test.raiser' extension
  
  creating build/temp.macosx-10.3-fat-2.7
  
  creating build/temp.macosx-10.3-fat-2.7/twisted
  
  creating build/temp.macosx-10.3-fat-2.7/twisted/test
  
  gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -arch ppc -arch i386
  -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c twisted/test/raiser.c -o build/temp.macosx-10.3-fat-2.7/twisted/test/raiser.o
  
  In file included from /usr/include/architecture/i386/math.h:626,
  
                   from /usr/include/math.h:28,
  
                   from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/pyport.h:312,
  
                   from /Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/Python.h:58,
  
                   from twisted/test/raiser.c:4:
  
  /usr/include/AvailabilityMacros.h:108:14: warning: #warning Building
  for Intel with Mac OS X Deployment Target &lt; 10.4 is invalid.
  
  /usr/libexec/gcc/powerpc-apple-darwin10/4.0.1/as: assembler
  (/usr/bin/../libexec/gcc/darwin/ppc/as or
  /usr/bin/../local/libexec/gcc/darwin/ppc/as) for architecture ppc not
  installed
  
  Installed assemblers are:
  
  /usr/bin/../libexec/gcc/darwin/x86_64/as for architecture x86_64
  
  /usr/bin/../libexec/gcc/darwin/i386/as for architecture i386
  
  lipo: can't open input file:
  /var/folders/jk/jkTyAFDWEC8fvZts+C7Jwk+++TI/-Tmp-//ccNvrcyZ.out (No
  such file or directory)
  
  error: command 'gcc-4.0' failed with exit status 1
  
  ---------------------------------------- Command /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
  -c "import setuptools;__file__='/Users/bbb/Dropbox/projects/android/continuous-integration/build/Twisted/setup.py';exec(compile(open(__file__).read().replace('\r\n',
  '\n'), __file__, 'exec'))" install --single-version-externally-managed
  --record /var/folders/jk/jkTyAFDWEC8fvZts+C7Jwk+++TI/-Tmp-/pip-MXEZuX-record/install-record.txt
  failed with error code 1 Storing complete log in
  /Users/bbb/.pip/pip.log
  </code></pre>