SCons is terrible.  seriously, stop using it.


for us package maintainers that get to suffer at upstream's stupidity,
these code snippets should help (stolen from some KDE code):


import os
import SCons.Util

if os.environ.has_key('CC'):
	env['CC'] = os.environ['CC']
if os.environ.has_key('CFLAGS'):
	env['CCFLAGS'] += SCons.Util.CLVar(os.environ['CFLAGS'])
if os.environ.has_key('CXX'):
	env['CXX'] = os.environ['CXX']
if os.environ.has_key('CXXFLAGS'):
	env['CXXFLAGS'] += SCons.Util.CLVar(os.environ['CXXFLAGS'])
if os.environ.has_key('CPPFLAGS'):
	env['CCFLAGS'] += SCons.Util.CLVar(os.environ['CPPFLAGS'])
if os.environ.has_key('LDFLAGS'):
	env['LINKFLAGS'] += SCons.Util.CLVar(os.environ['LDFLAGS'])