put these lines at the start of your user-config.py file

CCFLAGS =   ['-pipe', '-funsigned-char', '-fno-strict-aliasing' ]
CXXFLAGS = [ '-pipe', '-mwindows', '-funsigned-char', '-fno-strict-aliasing' ]

# Add extra flags
CCFLAGS.extend(   [ '-march=i686', '-O3', '-fomit-frame-pointer' ] )
CXXFLAGS.extend( [ '-march=i686', '-O3', '-fomit-frame-pointer' ] )