diff -r 6656482ba0da -r 971d2c670e06 sbsv2/raptor/python/raptor_meta.py
--- a/sbsv2/raptor/python/raptor_meta.py	Wed May 19 15:47:58 2010 +0100
+++ b/sbsv2/raptor/python/raptor_meta.py	Tue May 25 10:23:35 2010 +0100
@@ -35,6 +35,7 @@
 from mmpparser import *
 
 import time
+import generic_path
 
 
 PiggyBackedBuildPlatforms = {'ARMV5':['GCCXML']}
@@ -768,9 +769,13 @@
 			biloc="." # Someone building with a relative raptor path
 
 		self.__StandardVariables = {}
-		# Relative step-down to the root - let's try ignoring this for now, as it
-		# should amount to the same thing in a world where absolute paths are king
-		self.__StandardVariables['TO_ROOT'] = ""
+		# Relative step-down to the root. Amount to env variable SRCROOT 
+		# in case SBS_BUILD_DIR is on a different drive 		
+		if 'SRCROOT' in os.environ:
+			self.__StandardVariables['TO_ROOT'] = str(generic_path.Path(os.environ['SRCROOT']))
+		else:
+			self.__StandardVariables['TO_ROOT'] = ""
+		
 		# Top-level bld.inf location
 		self.__StandardVariables['TO_BLDINF'] = biloc
 		self.__StandardVariables['EXTENSION_ROOT'] = eiloc
@@ -838,9 +843,12 @@
 			eiloc="." # Someone building with a relative raptor path
 
 		self.__StandardVariables = {}
-		# Relative step-down to the root - let's try ignoring this for now, as it
-		# should amount to the same thing in a world where absolute paths are king
-		self.__StandardVariables['TO_ROOT'] = ""
+		# Relative step-down to the root. Amount to env variable SRCROOT 
+		# in case SBS_BUILD_DIR is on a different drive 		
+		if 'SRCROOT' in os.environ:
+			self.__StandardVariables['TO_ROOT'] = str(generic_path.Path(os.environ['SRCROOT']))
+		else:
+			self.__StandardVariables['TO_ROOT'] = ""
 		# Top-level bld.inf location
 		self.__StandardVariables['TO_BLDINF'] = biloc
 		# Location of bld.inf file containing the current EXTENSION block
@@ -3082,7 +3090,6 @@
 				value = options[option].replace('$(EPOCROOT)', '$(EPOCROOT)/')
 				value = value.replace('$(', '$$$$(')
 				value = value.replace('$/', '/').replace('$;', ':')
-				value = value.replace('$/', '/').replace('$;', ':')
 
 				if customInterface:
 					var.AddOperation(raptor_data.Set(option, value))