1 files changed, 30 insertions, 42 deletions
diff --git a/examples/api/Makefile b/examples/api/Makefile
index cad10a3ecb..6cf23d10ac 100644
--- a/examples/api/Makefile
+++ b/examples/api/Makefile
@@ -11,59 +11,47 @@ ifeq ($(ARCH),arm)
 LOAD_ADDR = 0x1000000
 endif
 
-include $(TOPDIR)/config.mk
-
 # Resulting ELF and binary exectuables will be named demo and demo.bin
-OUTPUT = $(obj)demo
+extra-y = demo
 
 # Source files located in the examples/api directory
-SOBJ_FILES-y += crt0.o
-COBJ_FILES-y += demo.o
-COBJ_FILES-y += glue.o
-COBJ_FILES-y += libgenwrap.o
+OBJ-y += crt0.o
+OBJ-y += demo.o
+OBJ-y += glue.o
+OBJ-y += libgenwrap.o
 
 # Source files which exist outside the examples/api directory
-EXT_COBJ_FILES-y += lib/crc32.o
-EXT_COBJ_FILES-y += lib/ctype.o
-EXT_COBJ_FILES-y += lib/div64.o
-EXT_COBJ_FILES-y += lib/string.o
-EXT_COBJ_FILES-y += lib/time.o
-EXT_COBJ_FILES-y += lib/vsprintf.o
-EXT_SOBJ_FILES-$(CONFIG_PPC) += arch/powerpc/lib/ppcstring.o
-
-# Create a list of source files so their dependencies can be auto-generated
-SRCS	+= $(addprefix $(SRCTREE)/,$(EXT_COBJ_FILES-y:.o=.c))
-SRCS	+= $(addprefix $(SRCTREE)/,$(EXT_SOBJ_FILES-y:.o=.S))
-SRCS	+= $(addprefix $(SRCTREE)/examples/api/,$(COBJ_FILES-y:.o=.c))
-SRCS	+= $(addprefix $(SRCTREE)/examples/api/,$(SOBJ_FILES-y:.o=.S))
+EXT_COBJ-y += lib/crc32.o
+EXT_COBJ-y += lib/ctype.o
+EXT_COBJ-y += lib/div64.o
+EXT_COBJ-y += lib/string.o
+EXT_COBJ-y += lib/time.o
+EXT_COBJ-y += lib/vsprintf.o
+EXT_SOBJ-$(CONFIG_PPC) += arch/powerpc/lib/ppcstring.o
 
 # Create a list of object files to be compiled
-OBJS	+= $(addprefix $(obj),$(SOBJ_FILES-y))
-OBJS	+= $(addprefix $(obj),$(COBJ_FILES-y))
-OBJS	+= $(addprefix $(obj),$(notdir $(EXT_COBJ_FILES-y)))
-OBJS	+= $(addprefix $(obj),$(notdir $(EXT_SOBJ_FILES-y)))
-
-all:	$(obj).depend $(OUTPUT)
+OBJS := $(OBJ-y) $(notdir $(EXT_COBJ-y) $(EXT_SOBJ-y))
+targets += $(OBJS)
+OBJS := $(addprefix $(obj)/,$(OBJS))
 
 #########################################################################
 
-$(OUTPUT):	$(OBJS)
-		$(LD) --gc-sections -Ttext $(LOAD_ADDR) -o $@ $^ $(PLATFORM_LIBS)
-		$(OBJCOPY) -O binary $@ $(OUTPUT).bin 2>/dev/null
+quiet_cmd_link_demo = LD      $@
+cmd_link_demo = $(LD) --gc-sections -Ttext $(LOAD_ADDR) -o $@ $(filter-out $(PHONY), $^) $(PLATFORM_LIBS)
 
-# Rule to build generic library C files
-$(obj)%.o: $(SRCTREE)/lib/%.c
-	$(CC) -g $(CFLAGS) -c -o $@ $<
+$(obj)/demo: $(OBJS) FORCE
+	$(call if_changed,link_demo)
 
-# Rule to build architecture-specific library assembly files
-$(obj)%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
-	$(CC) -g $(CFLAGS) -c -o $@ $<
+# demo.bin is never genrated. Is this necessary?
+OBJCOPYFLAGS_demo.bin := -O binary
+$(obj)/demo.bin: $(obj)/demo FORCE
+	$(call if_changed,objcopy)
 
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
+# Rule to build generic library C files
+$(addprefix $(obj)/,$(notdir $(EXT_COBJ-y))): $(obj)/%.o: lib/%.c FORCE
+	$(call cmd,force_checksrc)
+	$(call if_changed_rule,cc_o_c)
 
-#########################################################################
+# Rule to build architecture-specific library assembly files
+$(addprefix $(obj)/,$(notdir $(EXT_SOBJ-y))): $(obj)/%.o: arch/powerpc/lib/%.S FORCE
+	$(call if_changed_dep,as_o_S)