Using $CHROME_SRC_DIR in place of hash/.....

build/SConscript.main

 # Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 import shutil
 import sys
 
 
 p = ARGUMENTS.get('PROGRESS')
@@ skipping 10 matching lines @@
 
 load = ARGUMENTS.get('LOAD')
 if load:
     load = load.split(',')
 else:
     load = []
 
 
 env = Environment(
     BUILD_TYPE = ARGUMENTS.get('BUILD_TYPE', 'Hammer'),
-    TARGET_ROOT = '#/$BUILD_TYPE',
+    CHROME_SRC_DIR = Dir('#/..').abspath,
+    TARGET_ROOT = Dir('#/$BUILD_TYPE').abspath,
     OBJ_ROOT = '$TARGET_ROOT',
-    ROOT_DIR = '#/..',
 
     LIBS_DIR              = '$OBJ_ROOT/Libs',
 
     BASE_DIR              = '$OBJ_ROOT/base',
     BREAKPAD_DIR          = '$OBJ_ROOT/breakpad',
     CHROME_DIR            = '$OBJ_ROOT/chrome',
     GEARS_DIR             = '$OBJ_ROOT/gears',
     GOOGLE_UPDATE_DIR     = '$OBJ_ROOT/google_update',
     GOOGLEURL_DIR         = '$OBJ_ROOT/googleurl',
     NET_DIR               = '$OBJ_ROOT/net',
@@ skipping 405 matching lines @@
 if not os.path.exists(target_dir.abspath):
   Execute(Mkdir(target_dir))
 SConsignFile(target_dir.File('.sconsign').abspath)
 
 
 # Use timestamps change, followed by MD5 for speed
 env.Decider('MD5-timestamp')
 
 
 # Overlay things from a layer below.
-env.Dir('$TARGET_ROOT').addRepository(Dir('#/..'))
-env.Dir('$TARGET_ROOT/googleurl').addRepository(env.Dir('$ROOT_DIR/build'))
+env.Dir('$TARGET_ROOT').addRepository(env.Dir('$CHROME_SRC_DIR'))
+env.Dir('$TARGET_ROOT/googleurl').addRepository(env.Dir('$CHROME_SRC_DIR/build'))
 
 included = [c for c in load if not c.startswith('-')]
 excluded = [c[1:] for c in load if c.startswith('-')]
 if not included:
   included = ['all']
 
 components = ['all']
 
 def LoadComponent(c):
   components.append(c)
@@ skipping 61 matching lines @@
   if env['PLATFORM'] in ('posix', 'darwin'):
     sconscripts.extend([
       '$LIBEVENT_DIR/libevent.scons',
     ])
   # This is temporary until we get this lib to build on other platforms.
   if env['PLATFORM'] == 'win32':
     sconscripts.extend([
         '$BSPATCH_DIR/SConscript',
     ])
 
-if LoadComponent('v8') and env.Dir('#/../v8').exists():
+if LoadComponent('v8') and env.Dir('$CHROME_SRC_DIR/v8').exists():
   env.SConscript('SConscript.v8',
                  exports=['env'])
 
 if LoadComponent('webkit'):
   sconscripts.append('$WEBKIT_DIR/SConscript')
 
 env.SConscript(sconscripts, exports=['env'])
 
 
 help_fmt = """
@@ skipping 19 matching lines @@
     initial_indent = ' '*32,
     subsequent_indent = ' '*32,
   )
   components = tw.fill(', '.join(components))
 
   Help(help_fmt % components)
 
 
 Import('build_component')
 Default(build_component)