--- old/make/linux/makefiles/gcc.make	2010-10-28 13:45:55.000000000 +0200
+++ new/make/linux/makefiles/gcc.make	2010-10-28 13:45:55.000000000 +0200
@@ -44,7 +44,8 @@
 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
 USE_PRECOMPILED_HEADER=1
 PRECOMPILED_HEADER_DIR=.
-PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/incls/_precompiled.incl.gch
+PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled.hpp
+PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
 endif
 
 
@@ -91,6 +92,14 @@
 CFLAGS += -DE500V2
 endif
 
+# Used for platform dispatching
+CFLAGS += -DTARGET_OS_FAMILY_$(Platform_os_family)
+CFLAGS += -DTARGET_ARCH_$(Platform_arch)
+CFLAGS += -DTARGET_ARCH_MODEL_$(Platform_arch_model)
+CFLAGS += -DTARGET_OS_ARCH_$(Platform_os_arch)
+CFLAGS += -DTARGET_OS_ARCH_MODEL_$(Platform_os_arch_model)
+CFLAGS += -DTARGET_COMPILER_$(Platform_compiler)
+
 # Use C++ Interpreter
 ifdef CC_INTERP
   CFLAGS += -DCC_INTERP