diff -r 4b2787756a35 -r cbc11ebd788f sbsv2/raptor/python/raptor_meta.py
--- a/sbsv2/raptor/python/raptor_meta.py	Wed Feb 17 16:53:22 2010 +0000
+++ b/sbsv2/raptor/python/raptor_meta.py	Fri Feb 19 15:26:40 2010 +0000
@@ -2177,6 +2177,9 @@
 		self.BuildVariant.AddOperation(raptor_data.Set("DEFFILEKEYWORD", deffile_keyword))
 		self.__debug("Set DEFFILEKEYWORD to '%s'",deffile_keyword)
 
+		# If target type is "implib" it must have a def file
+		self.checkImplibDefFile(resolvedDefFile)
+
 		# if this target type has a default TARGETPATH other than "" for
 		# resources then we need to add that default to all resources which
 		# do not explicitly set the TARGETPATH themselves.
@@ -2268,6 +2271,13 @@
 		"""Target type in lower case - the standard format"""
 		return self.__targettype.lower()
 
+	def checkImplibDefFile(self, defFile):
+		"""Project with target type implib must have DEFFILE defined 
+		explicitly or implicitly, otherwise it is an error
+		""" 
+		if self.getTargetType() == 'implib' and defFile == '':
+			self.__Raptor.Error("No DEF File for IMPLIB target type in " + self.__currentMmpFile)
+
 	def resolveDefFile(self, aTARGET, aBuildPlatform):
 		"""Returns a fully resolved DEFFILE entry depending on .mmp file location and TARGET, DEFFILE and NOSTRICTDEF
 		entries in the .mmp file itself (where appropriate).