kbuild: arch/sparc cleanup / O_TARGET removal

arch/sparc/Makefile

@@ -34,17 +34,12 @@ endif
 
 HEAD := arch/sparc/kernel/head.o arch/sparc/kernel/init_task.o
 
-SUBDIRS += arch/sparc/kernel arch/sparc/lib arch/sparc/prom \
-	arch/sparc/mm arch/sparc/math-emu
-
-CORE_FILES := arch/sparc/kernel/kernel.o arch/sparc/mm/mm.o $(CORE_FILES) \
-	arch/sparc/math-emu/math-emu.o
-
-LIBS := $(LIBS) arch/sparc/prom/lib.a arch/sparc/lib/lib.a
+core-y += arch/sparc/kernel/ arch/sparc/mm/ arch/sparc/math-emu/
+libs-y += arch/sparc/prom/ arch/sparc/lib/
 
 # This one has to come last
 SUBDIRS += arch/sparc/boot
-CORE_FILES_NO_BTFIX := $(CORE_FILES)
+CORE_FILES_NO_BTFIX := $(addsuffix built-in.o,$(core-y))
 CORE_FILES += arch/sparc/boot/btfix.o
 
 # Export what is needed by arch/sparc/boot/Makefile

arch/sparc/kernel/Makefile

@@ -4,7 +4,6 @@
 
 SH = $(CONFIG_SHELL)
 
-O_TARGET	:= kernel.o
 EXTRA_TARGETS	:= head.o init_task.o
 
 EXTRA_AFLAGS := -ansi

arch/sparc/math-emu/Makefile

 #
 # Makefile for the FPU instruction emulation.
 #
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definition is now in the main makefile...
-
 
-O_TARGET := math-emu.o
 obj-y    := math.o ashldi3.o
 
 EXTRA_AFLAGS := -ansi

arch/sparc/mm/Makefile

 # $Id: Makefile,v 1.38 2000/12/15 00:41:22 davem Exp $
 # Makefile for the linux Sparc-specific parts of the memory manager.
 #
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definition is now in the main makefile...
 
 EXTRA_AFLAGS := -ansi
 
-O_TARGET := mm.o
 obj-y    := fault.o init.o loadmmu.o generic.o extable.o btfixup.o
 
 ifeq ($(CONFIG_SUN4),y)