--- SConstruct.orig	2012-12-31 16:35:54 UTC
+++ SConstruct
@@ -39,7 +39,7 @@ opts.Add('python_config', 'python-config
 
 tools = ['default', 'textfile']
 
-env = Environment(ENV=os.environ, options=opts, tools=tools)
+env = Environment(ENV=os.environ, options=opts, tools=tools, **dict((k, v.split()) for k, v in ARGUMENTS.iteritems()))
 print('building for %r (use scons python_binary=xxx to change)' % env['python_binary'])
 print('using %r (use scons python_config=xxx to change)' % env['python_config'])
 if sys.platform == "win32":
@@ -47,9 +47,9 @@ if sys.platform == "win32":
     env = Environment(tools=tools + ['mingw'], ENV=os.environ, options=opts)
 opts.Update(env)
 
-env.Append(CXXFLAGS=' -Wall -Wno-sign-compare -Wno-write-strings')
-env.Append(CCFLAGS='-Wall')
-env.Append(CFLAGS='-std=c99')
+env.Append(CXXFLAGS=['-Wall', '-Wno-sign-compare', '-Wno-write-strings'])
+env.Append(CCFLAGS=['-Wall'])
+env.Append(CFLAGS=['-std=c99'])
 
 # Define strdup() in string.h under glibc >= 2.10 (POSIX.1-2008)
 env.Append(CFLAGS='-D_POSIX_C_SOURCE=200809L')