diff -up Python-2.6.6/Lib/distutils/sysconfig.py.distutils-cflags Python-2.6.6/Lib/distutils/sysconfig.py --- Python-2.6.6/Lib/distutils/sysconfig.py.distutils-cflags 2011-08-12 17:18:17.833091153 -0400 +++ Python-2.6.6/Lib/distutils/sysconfig.py 2011-08-12 17:18:27.449106938 -0400 @@ -187,7 +187,7 @@ def customize_compiler(compiler): if 'LDFLAGS' in os.environ: ldshared = ldshared + ' ' + os.environ['LDFLAGS'] if 'CFLAGS' in os.environ: - cflags = opt + ' ' + os.environ['CFLAGS'] + cflags = cflags + ' ' + os.environ['CFLAGS'] ldshared = ldshared + ' ' + os.environ['CFLAGS'] if 'CPPFLAGS' in os.environ: cpp = cpp + ' ' + os.environ['CPPFLAGS']