old_contents: #######################################################################
  # Common SCons code
  
  import os
  import os.path
  import sys
  import platform as _platform
  
  
  #######################################################################
  # Defaults
  
  _platform_map = {
  	'linux2': 'linux',
  	'win32': 'winddk',
  }
  
  default_platform = sys.platform
  default_platform = _platform_map.get(default_platform, default_platform)
  
  _machine_map = {
  	'x86': 'x86',
  	'i386': 'x86',
  	'i486': 'x86',
  	'i586': 'x86',
  	'i686': 'x86',
  	'ppc' : 'ppc',
  	'x86_64': 'x86_64',
  }
  if 'PROCESSOR_ARCHITECTURE' in os.environ:
  	default_machine = os.environ['PROCESSOR_ARCHITECTURE']
  else:
  	default_machine = _platform.machine()
  default_machine = _machine_map.get(default_machine, 'generic')
  
  if default_platform in ('linux', 'freebsd'):
  	default_dri = 'yes'
  elif default_platform in ('winddk', 'windows', 'wince', 'darwin'):
  	default_dri = 'no'
  else:
  	default_dri = 'no'
  
  
  #######################################################################
  # Common options
  
  def AddOptions(opts):
  	try:
  		from SCons.Variables.BoolVariable import BoolVariable as BoolOption
  	except ImportError:
  		from SCons.Options.BoolOption import BoolOption
  	try:
  		from SCons.Variables.EnumVariable import EnumVariable as EnumOption
  	except ImportError:
  		from SCons.Options.EnumOption import EnumOption
  	opts.Add(BoolOption('debug', 'debug build', 'no'))
  	opts.Add(BoolOption('profile', 'profile build', 'no'))
  	opts.Add(BoolOption('quiet', 'quiet command lines', 'yes'))
  	opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
  											 allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
  	opts.Add(EnumOption('platform', 'target platform', default_platform,
  											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince', 'darwin')))
  	opts.Add(EnumOption('toolchain', 'compiler toolchain', 'default',
  											 allowed_values=('default', 'crossmingw', 'winsdk', 'winddk')))
  	opts.Add(BoolOption('llvm', 'use LLVM', 'no'))
  	opts.Add(BoolOption('dri', 'build DRI drivers', default_dri))
  
  
new_contents: #######################################################################
  # Common SCons code
  
  import os
  import os.path
  import sys
  import platform as _platform
  
  
  #######################################################################
  # Defaults
  
  _platform_map = {
  	'linux2': 'linux',
  	'win32': 'windows',
  }
  
  default_platform = sys.platform
  default_platform = _platform_map.get(default_platform, default_platform)
  
  _machine_map = {
  	'x86': 'x86',
  	'i386': 'x86',
  	'i486': 'x86',
  	'i586': 'x86',
  	'i686': 'x86',
  	'ppc' : 'ppc',
  	'x86_64': 'x86_64',
  }
  if 'PROCESSOR_ARCHITECTURE' in os.environ:
  	default_machine = os.environ['PROCESSOR_ARCHITECTURE']
  else:
  	default_machine = _platform.machine()
  default_machine = _machine_map.get(default_machine, 'generic')
  
  if default_platform in ('linux', 'freebsd'):
  	default_dri = 'yes'
  elif default_platform in ('winddk', 'windows', 'wince', 'darwin'):
  	default_dri = 'no'
  else:
  	default_dri = 'no'
  
  
  #######################################################################
  # Common options
  
  def AddOptions(opts):
  	try:
  		from SCons.Variables.BoolVariable import BoolVariable as BoolOption
  	except ImportError:
  		from SCons.Options.BoolOption import BoolOption
  	try:
  		from SCons.Variables.EnumVariable import EnumVariable as EnumOption
  	except ImportError:
  		from SCons.Options.EnumOption import EnumOption
  	opts.Add(BoolOption('debug', 'debug build', 'no'))
  	opts.Add(BoolOption('profile', 'profile build', 'no'))
  	opts.Add(BoolOption('quiet', 'quiet command lines', 'yes'))
  	opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
  											 allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
  	opts.Add(EnumOption('platform', 'target platform', default_platform,
  											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince', 'darwin')))
  	opts.Add(EnumOption('toolchain', 'compiler toolchain', 'default',
  											 allowed_values=('default', 'crossmingw', 'winsdk', 'winddk')))
  	opts.Add(BoolOption('llvm', 'use LLVM', 'no'))
  	opts.Add(BoolOption('dri', 'build DRI drivers', default_dri))
  
  
subject: Set the default windows platform to be windows userspace.