def compile(fname):

    import os
    import sys
    import subprocess
    parts=os.path.splitext(fname)
    
    fid=open('setup_pyrex.py','w')
    fid.write("""from distutils.core import setup
from distutils.extension import Extension
from Pyrex.Distutils import build_ext

setup(
  name = 'Demos',
  ext_modules=[ 
    Extension("%s",       ["%s"])
    ],
  cmdclass = {'build_ext': build_ext}
)
""" % (parts[0],fname))

    fid.close()
              
#    os.system('c:/python25/python setup_pyrex.py build_ext --inplace')
    if sys.platform=='win32':
        cmdlist='c:/python25/python setup_pyrex.py build_ext --inplace'.split()  
        output=subprocess.Popen(
            cmdlist,stdin=subprocess.PIPE,
            stdout=subprocess.PIPE,stderr=subprocess.PIPE)
        S=''.join(output.stdout.readlines())+''.join(output.stderr.readlines())
    
        print S
    else:
        cmdlist='python setup_pyrex.py build_ext --inplace'.split() 
        os.system(' '.join(cmdlist))
##        output=subprocess.Popen(
##            cmdlist,stdin=subprocess.PIPE,
##            stdout=subprocess.PIPE,stderr=subprocess.PIPE,close_fds=True)