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-rw-r--r--examples/api/Makefile44
1 files changed, 14 insertions, 30 deletions
diff --git a/examples/api/Makefile b/examples/api/Makefile
index cad10a3..09475f8 100644
--- a/examples/api/Makefile
+++ b/examples/api/Makefile
@@ -11,10 +11,8 @@ ifeq ($(ARCH),arm)
LOAD_ADDR = 0x1000000
endif
-include $(TOPDIR)/config.mk
-
# Resulting ELF and binary exectuables will be named demo and demo.bin
-OUTPUT = $(obj)demo
+extra-y = demo
# Source files located in the examples/api directory
SOBJ_FILES-y += crt0.o
@@ -31,39 +29,25 @@ EXT_COBJ_FILES-y += lib/time.o
EXT_COBJ_FILES-y += lib/vsprintf.o
EXT_SOBJ_FILES-$(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))
-
# 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 += $(addprefix $(obj)/,$(SOBJ_FILES-y))
+OBJS += $(addprefix $(obj)/,$(COBJ_FILES-y))
+OBJS += $(addprefix $(obj)/,$(notdir $(EXT_COBJ_FILES-y)))
+OBJS += $(addprefix $(obj)/,$(notdir $(EXT_SOBJ_FILES-y)))
#########################################################################
-$(OUTPUT): $(OBJS)
+$(obj)/demo: $(OBJS)
$(LD) --gc-sections -Ttext $(LOAD_ADDR) -o $@ $^ $(PLATFORM_LIBS)
- $(OBJCOPY) -O binary $@ $(OUTPUT).bin 2>/dev/null
+
+$(obj)/demo.bin: $(obj)/demo
+ $(OBJCOPY) -O binary $< $@ 2>/dev/null
# Rule to build generic library C files
-$(obj)%.o: $(SRCTREE)/lib/%.c
- $(CC) -g $(CFLAGS) -c -o $@ $<
+$(addprefix $(obj)/,$(notdir $(EXT_COBJ_FILES-y))): $(obj)/%.o: $(SRCTREE)/lib/%.c FORCE
+ $(call cmd,force_checksrc)
+ $(call if_changed_rule,cc_o_c)
# Rule to build architecture-specific library assembly files
-$(obj)%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
- $(CC) -g $(CFLAGS) -c -o $@ $<
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+$(addprefix $(obj)/,$(notdir $(EXT_SOBJ_FILES-y))): $(obj)/%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
+ $(call if_changed_dep,as_o_S)