#######################################################################
# Common SCons code

import os
import os.path
import subprocess
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 'LLVM' in os.environ:
    default_llvm = 'yes'
else:
    default_llvm = 'no'
    try:
        if env['platform'] != 'windows' and subprocess.call(['llvm-config', '--version'], stdout=subprocess.PIPE) == 0:
            default_llvm = 'yes'
    except:
        pass

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', 'yes'))
	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', 'embedded')))
	opts.Add('toolchain', 'compiler toolchain', 'default')
	opts.Add(BoolOption('llvm', 'use LLVM', default_llvm))
	opts.Add(BoolOption('dri', 'build DRI drivers', default_dri))

@@ -111,16 +111,26 @@
 os.path%0A
+import re%0A
 import s
@@ -832,16 +832,310 @@
 '%0Aelse:%0A
+    # Search sys.argv%5B%5D for a %22platform=foo%22 argument since we don't have%0A    # an 'env' variable at this point.%0A    platform = default_platform%0A    pattern = re.compile(%22(platform=)(.*)%22)%0A    for arg in sys.argv:%0A        m = pattern.match(arg)%0A        if m:%0A            platform = m.group(2)%0A%0A
     defa
@@ -1174,21 +1174,16 @@
  if 
-env%5B'
 platform
 '%5D !
@@ -1178,18 +1178,16 @@
 platform
-'%5D
  != 'win

fix llvm detection