diff --git a/Makefile b/Makefile
index 05292ad..7a179cd 100644
--- a/Makefile
+++ b/Makefile
@@ -743,6 +743,9 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),)
 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 endif
 
+quiet_cmd_objcopy = OBJCOPY $@
+cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
+
 all:		$(ALL-y)
 
 PHONY += dtbs
@@ -752,27 +755,31 @@ dtbs dts/dt.dtb: checkdtc u-boot
 u-boot-dtb.bin: u-boot.bin dts/dt.dtb
 		cat $^ >$@
 
-u-boot.hex:	u-boot
-		$(OBJCOPY) $(OBJCOPYFLAGS) -O ihex $< $@
+OBJCOPYFLAGS_u-boot.hex := -O ihex
 
-u-boot.srec:	u-boot
-		$(OBJCOPY) $(OBJCOPYFLAGS) -O srec $< $@
+OBJCOPYFLAGS_u-boot.srec := -O srec
 
-u-boot.bin:	u-boot
-		$(OBJCOPY) $(OBJCOPYFLAGS) -O binary $< $@
-		$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
-		$(BOARD_SIZE_CHECK)
+u-boot.hex u-boot.srec: u-boot FORCE
+	$(call if_changed,objcopy)
+
+OBJCOPYFLAGS_u-boot.bin := -O binary
+
+u-boot.bin: u-boot FORCE
+	$(call if_changed,objcopy)
+	$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
+	$(BOARD_SIZE_CHECK)
 
 u-boot.ldr:	u-boot
 		$(CREATE_LDR_ENV)
 		$(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 		$(BOARD_SIZE_CHECK)
 
-u-boot.ldr.hex:	u-boot.ldr
-		$(OBJCOPY) $(OBJCOPYFLAGS) -O ihex $< $@ -I binary
+OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
+
+OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 
-u-boot.ldr.srec:	u-boot.ldr
-		$(OBJCOPY) $(OBJCOPYFLAGS) -O srec $< $@ -I binary
+u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
+	$(call if_changed,objcopy)
 
 #
 # U-Boot entry point, needed for booting of full-blown U-Boot
@@ -1253,6 +1260,16 @@ quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
       cmd_rmfiles = rm -f $(rm-files)
 
+# read all saved command lines
+
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+
+ifneq ($(cmd_files),)
+  $(cmd_files): ;	# Do not try to update included dependency files
+  include $(cmd_files)
+endif
+
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
 # Usage:
 # $(Q)$(MAKE) $(clean)=dir
diff --git a/examples/api/Makefile b/examples/api/Makefile
index 09475f8..6c19830 100644
--- a/examples/api/Makefile
+++ b/examples/api/Makefile
@@ -40,8 +40,10 @@ OBJS	+= $(addprefix $(obj)/,$(notdir $(EXT_SOBJ_FILES-y)))
 $(obj)/demo:	$(OBJS)
 		$(LD) --gc-sections -Ttext $(LOAD_ADDR) -o $@ $^ $(PLATFORM_LIBS)
 
-$(obj)/demo.bin: $(obj)/demo
-		$(OBJCOPY) -O binary $< $@ 2>/dev/null
+# demo.bin is never genrated. Is this necessary?
+OBJCOPYFLAGS_demo.bin := -O binary
+$(obj)/demo.bin: $(obj)/demo FORCE
+	$(call if_changed,objcopy)
 
 # Rule to build generic library C files
 $(addprefix $(obj)/,$(notdir $(EXT_COBJ_FILES-y))): $(obj)/%.o: $(SRCTREE)/lib/%.c FORCE
diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile
index 47c9d54..5f61043 100644
--- a/examples/standalone/Makefile
+++ b/examples/standalone/Makefile
@@ -72,8 +72,10 @@ $(obj)/%:	$(obj)/%.o $(LIB)
 			-o $@ -e $(SYM_PREFIX)$(notdir $(<:.o=)) $< $(LIB) \
 			-L$(gcclibdir) -lgcc
 
-$(obj)/%.srec:	$(obj)/%
-		$(OBJCOPY) -O srec $< $@ 2>/dev/null
+$(obj)/%.srec: OBJCOPYFLAGS := -O srec
+$(obj)/%.srec: $(obj)/% FORCE
+	$(call if_changed,objcopy)
 
-$(obj)/%.bin:	$(obj)/%
-		$(OBJCOPY) -O binary $< $@ 2>/dev/null
+$(obj)/%.bin: OBJCOPYFLAGS := -O binary
+$(obj)/%.bin: $(obj)/% FORCE
+	$(call if_changed,objcopy)
diff --git a/spl/Makefile b/spl/Makefile
index 02312ce..bcb70df 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -199,8 +199,13 @@ $(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin
 	$(OBJTREE)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@
 endif
 
-$(obj)/$(SPL_BIN).bin:	$(obj)/$(SPL_BIN)
-	$(OBJCOPY) $(OBJCOPYFLAGS) $(SPL_OBJCFLAGS) -O binary $< $@
+quiet_cmd_objcopy = OBJCOPY $@
+cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
+
+OBJCOPYFLAGS_$(SPL_BIN).bin = $(SPL_OBJCFLAGS) -O binary
+
+$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN) FORCE
+	$(call if_changed,objcopy)
 
 LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
 ifneq ($(CONFIG_SPL_TEXT_BASE),)
@@ -228,6 +233,16 @@ cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
 $(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE
 	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(obj). -ansi -D__ASSEMBLY__ -P - < $< > $@
 
+# read all saved command lines
+
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+
+ifneq ($(cmd_files),)
+  $(cmd_files): ;	# Do not try to update included dependency files
+  include $(cmd_files)
+endif
+
 PHONY += FORCE
 FORCE:
 
