--- old/make/linux/makefiles/buildtree.make	2010-11-10 12:56:01.000000000 +0100
+++ new/make/linux/makefiles/buildtree.make	2010-11-10 12:56:01.000000000 +0100
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -113,7 +113,7 @@
 COMPILER	= $(shell sed -n 's/^compiler[ 	]*=[ 	]*//p' $(PLATFORM_FILE))
 
 SIMPLE_DIRS	= \
-	$(PLATFORM_DIR)/generated/incls \
+	$(PLATFORM_DIR)/generated/dependencies \
 	$(PLATFORM_DIR)/generated/adfiles \
 	$(PLATFORM_DIR)/generated/jvmtifiles
 
@@ -197,11 +197,27 @@
 	echo "HOTSPOT_BUILD_USER = $(HOTSPOT_BUILD_USER)"; \
 	echo "HOTSPOT_VM_DISTRO = $(HOTSPOT_VM_DISTRO)"; \
 	echo; \
-	echo "Src_Dirs = \\"; \
+	echo "# Used for platform dispatching"; \
+	echo "TARGET_DEFINES  = -DTARGET_OS_FAMILY_\$$(Platform_os_family)"; \
+	echo "TARGET_DEFINES += -DTARGET_ARCH_\$$(Platform_arch)"; \
+	echo "TARGET_DEFINES += -DTARGET_ARCH_MODEL_\$$(Platform_arch_model)"; \
+	echo "TARGET_DEFINES += -DTARGET_OS_ARCH_\$$(Platform_os_arch)"; \
+	echo "TARGET_DEFINES += -DTARGET_OS_ARCH_MODEL_\$$(Platform_os_arch_model)"; \
+	echo "TARGET_DEFINES += -DTARGET_COMPILER_\$$(Platform_compiler)"; \
+	echo "CFLAGS += \$$(TARGET_DEFINES)"; \
+	echo; \
+	echo "Src_Dirs_V = \\"; \
 	sed 's/$$/ \\/;s|$(GAMMADIR)|$$(GAMMADIR)|' ../shared_dirs.lst; \
 	echo "\$$(GAMMADIR)/src/cpu/$(ARCH)/vm \\"; \
 	echo "\$$(GAMMADIR)/src/os/$(OS_FAMILY)/vm \\"; \
 	echo "\$$(GAMMADIR)/src/os_cpu/$(OS_FAMILY)_$(ARCH)/vm"; \
+	echo; \
+	echo "Src_Dirs_I = \\"; \
+	echo "\$$(GAMMADIR)/src/share/vm \\"; \
+	echo "\$$(GAMMADIR)/src/share/vm/prims \\"; \
+	echo "\$$(GAMMADIR)/src/cpu/$(ARCH)/vm \\"; \
+	echo "\$$(GAMMADIR)/src/os/$(OS_FAMILY)/vm \\"; \
+	echo "\$$(GAMMADIR)/src/os_cpu/$(OS_FAMILY)_$(ARCH)/vm"; \
 	[ -n "$(CFLAGS_BROWSE)" ] && \
 	    echo && echo "CFLAGS_BROWSE = $(CFLAGS_BROWSE)"; \
 	[ -n "$(HOTSPOT_EXTRA_SYSDEFS)" ] && \