Makefile.rules - chromiumos/platform/ec - Git at Google

 # -*- makefile -*-
 # vim: set filetype=make :
 # Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Embedded Controller firmware build system - common targets
 #

 FLATSIZE_FILE ?= .sizes.txt
 BUILD_DIR := $(firstword $(subst /, ,$(out)))

 build-utils := $(foreach u,$(build-util-bin),$(out)/util/$(u))
 host-utils := $(foreach u,$(host-util-bin),$(out)/util/$(u))
 build-art := $(foreach u,$(build-util-art),$(out)/$(u))
 build-srcs := $(foreach u,$(build-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))
 host-srcs := $(foreach u,$(host-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))

 # Don't do a build test on the following boards:
 skip_boards = OWNERS host it83xx_evb reef_it8320
 boards := $(filter-out $(skip_boards),$(notdir $(wildcard board/* private*/board/*)))

 # Create output directories if necessary
 _common_dir_create := $(foreach d,$(common_dirs),$(shell [ -d $(out)/$(d) ] || \
 	    mkdir -p $(out)/$(d)))
 _sharedlib_dir_create := $(foreach d,$(dirs),$(shell \
 	[ -d $(out)/$(SHOBJLIB)/$(d) ] || mkdir -p $(out)/$(SHOBJLIB)/$(d)))
 _dir_create := $(foreach d,$(dirs),$(shell [ -d $(out)/$(BLD)/$(d) ] || \
 	    mkdir -p $(out)/RO/$(d); mkdir -p $(out)/RW/$(d)))
 _dir_y_create := $(foreach d,$(dirs-y),$(shell [ -d $(out)/$(BLD)/$(d) ] || \
 	    mkdir -p $(out)/RO/$(d); mkdir -p $(out)/RW/$(d)))

 # V unset for normal output, V=1 for verbose output, V=0 for silent build
 # (warnings/errors only). Use echo thus: $(call echo,"stuff  to  echo")
 ifeq ($(V),0)
 Q := @
 echo = echo -n;
 quiet = echo -n; $(cmd_$(1))
 silent = 1>/dev/null
 silent_err = 2>/dev/null
 else
 echo = echo $(1);
 ifeq ($(V),)
 Q := @
 quiet = @echo '  $(2)' $(subst $(out)/,,$@) ; $(cmd_$(1))
 silent = 1>/dev/null
 silent_err = 2>/dev/null
 else
 Q :=
 quiet = $(cmd_$(1))
 endif
 endif

 # commands to build all targets
 cmd_lds = $(CPP) -P -C -MMD -MF $@.d -MT $@ $(CPPFLAGS) $< -o $@
 cmd_lds_b = $(cmd_lds) -DRW_B_LDS
 # Allow obj_to_bin to be overridden by board or chip specific commands
 cmd_obj_to_bin ?= $(OBJCOPY) --gap-fill=0xff -O binary $^ $(out)/$*.bin.tmp
 cmd_flat_to_obj = $(CC) -T $(out)/firmware_image.lds -nostdlib $(CPPFLAGS) \
                   -Wl,--build-id=none -o $@ $<
 # Allow the .roshared section to overlap other sections (itself)
 cmd_ec_elf_to_flat ?= $(OBJCOPY) --set-section-flags .roshared=share \
 				-O binary $< $@
 cmd_elf_to_signed ?= sudo $(SIGNER) --key=util/signer/$(3) \
 	--b --input=$< --format=bin --output=$@.signed $(SIGNER_EXTRAS) \
 	&& sudo chown $(shell whoami) $@.signed && mv $@.signed $@
 cmd_elf_to_dis = $(OBJDUMP) -D $< > $@
 cmd_elf_to_hex = $(OBJCOPY) -O ihex $< $@
 cmd_bin_to_hex = $(OBJCOPY) -I binary -O ihex \
 	--change-addresses $(_program_memory_base) $^ $@
 cmd_smap = $(NM) $< | sort > $@
 cmd_elf = $(CC) $(objs) $(libsharedobjs_elf-y) $(LDFLAGS) \
 	-o $@ -Wl,-T,$< -Wl,-Map,$(patsubst %.elf,%.map,$@)
 cmd_exe = $(CC) $(ro-objs) $(HOST_TEST_LDFLAGS) -o $@
 cmd_c_to_o = $(CC) $(CFLAGS) -MMD -MF $@.d -c $< -o $(@D)/$(@F)
 cmd_c_to_build = $(BUILDCC) $(BUILD_CFLAGS) \
 	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $*.c) \
 	         $(BUILD_LDFLAGS) \
 	         -MMD -MF $@.d -o $@
 cmd_c_to_vif = $(BUILDCC) $(BUILD_CFLAGS) $(STANDALONE_FLAGS) \
 		-MMD -MF $@.d -c $< -flto -o $@
 cmd_c_to_host = $(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) -MMD -MF $@.d  -o $@ \
 	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $*.c)
 cmd_cxx_to_host = $(HOSTCXX) -std=c++0x $(COMMON_WARN) $(HOST_CXXFLAGS)\
 	-I ./$($(notdir $@)_ROOT) -o $@ $(filter %.cc,$^) $($(notdir $@)_LIBS)
 cmd_host_test = ./util/run_host_test $* $(silent)
 cmd_version = ./util/getversion.sh > $@
 cmd_vif = $(out)/util/genvif -b $(BOARD) -o $(out)
 cmd_mv_from_tmp = mv $(out)/$*.bin.tmp $(out)/$*.bin
 cmd_extractrw-y = dd if=$(out)/$(PROJECT).bin.tmp of=$(out)/$(PROJECT).RW.bin \
 	       bs=1 count=$(_rw_size) skip=$(_rw_off) $(silent_err)
 cmd_copyrw-y = cd $(out) && cp RW/$(PROJECT).RW.flat RW/$(PROJECT).RW.bin
 cmd_sharedlib_elf = $(CC) $(libsharedobjs_deps) \
 	-Wl,-T,common/ec.$(SHOBJLIB).ld $(LDFLAGS) \
 	-o $(out)/$(SHOBJLIB)/$(SHOBJLIB).elf \
 	-Wl,-Map,$(out)/$(SHOBJLIB)/$(SHOBJLIB).map

 # commands for RSA signature: rwsig does not need to sign the whole image
 # (it signs the RW part separately). usbpd1 type needs to sign the final image.
 ifeq ($(CONFIG_RWSIG_TYPE_RWSIG),)
 	cmd_rsasign = futility sign --type usbpd1 --pem $(PEM) $(out)/$*.bin.tmp
 else
 	cmd_rsasign =
 endif

 cmd_key_extract = futility create $(PEM) $(out)/$* $(silent)

 cmd_rsasign_rwsig = futility sign --type rwsig \
                                     --prikey $(out)/key.vbprik2 $< $@

 # commands to build optional xref files
 cmd_deps_to_list = cat $(deps) | tr -d ':\\' | tr ' ' '\012' \
 	| egrep '\.[chS]$$' | sort | uniq > $@
 cmd_etags = etags -o $@ $(shell cat $<)
 cmd_ctags = ctags -o $@ $(shell cat $<)
 targ_if_prog = $(if $(shell which $(1) 2>/dev/null),$(2),)

 # By default, the "build_boards" and "try_build_boards" targets will build all
 # of the boards listed in $(boards). However, the invoker can provide a
 # different list via the BOARDS variable. Providing an empty value for BOARDS
 # is not allowed.
 BOARDS ?= $(boards)
 ifeq ($(BOARDS),)
 $(error BOARDS must be non-empty)
 endif

 FAILED_BOARDS_DIR = .failedboards
 # When building with -j, it's easy to miss errors. If you don't have your shell
 # configured to warn you about nonzero exit, you may not even notice that "make
 # buildall -j" failed. To make it more obvious, we'll do one level of recursion
 # here.
 .PHONY: try_build_boards
 try_build_boards: $(foreach b, $(BOARDS), proj-$(b))

 .PHONY: build_boards
 build_boards:
 	@rm -rf $(FAILED_BOARDS_DIR)
 	@mkdir $(FAILED_BOARDS_DIR)
 	@for b in $(BOARDS); do echo 'starting' > $(FAILED_BOARDS_DIR)/$$b; done
 	$(MAKE) try_build_boards

 .PHONY: buildall
 buildall: build_boards
 	$(MAKE) build_cts
 	$(MAKE) runtests
 	@touch .tests-passed
 	@echo "$@ completed successfully!"

 showboards:
 	@echo $(sort $(boards))

 # Print any important notices at the end of the build.
 .PHONY: notice
 notice: $(config)
 ifeq ($(CONFIG_EXPERIMENTAL_CONSOLE),y)
 ifeq ($(TEST_BUILD),)
 	@echo "*** NOTE: The experimental console is ENABLED. ***"
 	@echo "You will need to run the EC-3PO interactive console in the util"
 	@echo "directory!  Otherwise, you won't be able to enter any commands."
 endif # not a TEST_BUILD
 endif # CONFIG_EXPERIMENTAL_CONSOLE=y

 proj-%:
 	@echo 'building' > $(FAILED_BOARDS_DIR)/$*
 	@echo "======= building $*"
 	$(MAKE) --no-print-directory BOARD=$* V=$(V)
 	@rm $(FAILED_BOARDS_DIR)/$*

 dis-y := $(out)/RW/$(PROJECT).RW.dis
 dis-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.dis
 dis-$(CONFIG_SHAREDLIB) += $(out)/$(SHOBJLIB)/$(SHOBJLIB).dis
 dis: $(dis-y)
 .PHONY: dis

 hex-y := $(out)/RO/$(PROJECT).RO.hex $(out)/RW/$(PROJECT).RW.hex $(out)/$(PROJECT).hex
 hex: $(hex-y)
 .PHONY: hex

 .PHONY: utils-art
 utils-art: $(build-art)

 .PHONY: utils-host
 utils-host: $(host-utils)

 .PHONY: utils-build
 utils-build: $(build-utils)

 .PHONY: utils
 utils: utils-host utils-build utils-art

 # On board test binaries
 test-targets=$(foreach t,$(test-list-y),test-$(t))
 .PHONY: $(test-targets)

 ifeq "$(CONFIG_COMMON_RUNTIME)" "y"
 $(test-targets): test-%:
 	@set -e ; \
 	$(call echo,"  BUILD   $(out)/$*") \
 	$(MAKE) --no-print-directory BOARD=$(BOARD) PROJECT=$* \
 	        V=$(V) out=$(out)/$* TEST_BUILD=y; \
 	cp $(out)/$*/$*.bin $(out)/test-$*.bin
 endif

 .PHONY: tests
 tests: $(test-targets)

 # Emulator test executables
 host-test-targets=$(foreach t,$(test-list-host),host-$(t))
 run-test-targets=$(foreach t,$(test-list-host),run-$(t))
 .PHONY: $(host-test-targets) $(run-test-targets)

 $(host-test-targets): host-%:
 	@set -e ; \
 	$(call echo,"  BUILD   host - build/host/$*") \
 	$(MAKE) --no-print-directory BOARD=host PROJECT=$* \
 	        V=$(V) out=build/host/$* TEST_BUILD=y EMU_BUILD=y $(TEST_FLAG) \
 		CROSS_COMPILE= build/host/$*/$*.exe

 $(run-test-targets): run-%: host-%
 	$(call quiet,host_test,TEST   )

 .PHONY: hosttests runtests
 hosttests: $(host-test-targets)
 runtests: $(run-test-targets)

 # Automatically enumerate all suites.
 cts_excludes := common
 cts_suites := $(filter-out $(cts_excludes), \
 	$(shell find cts -maxdepth 1 -mindepth 1 -type d -printf "%f "))

 # Add boards below as CTS is expanded.
 cts_boards := stm32l476g-eval nucleo-f072rb

 .PHONY: build_cts

 # Create CTS rule automatically for given suite and board
 # $1: suite name
 # $2: board name
 define make-cts =
 build_cts: cts-$(1)-$(2)
 cts-$(1)-$(2):
 	$$(MAKE) CTS_MODULE=$(1) BOARD=$(2)
 # Do not remove this blank line

 endef

 # Create rules for all cts-suite-board combinations. Additionally, we serialize
 # targets per board: cts-x-board -> cts-y-board -> ...
 # If we don't serialize targets, parallel make fails because all suites
 # try to produce ec.bin in the same directory (e.g. build/stm32l476g-eval).
 $(foreach b, $(cts_boards), \
 	$(foreach s, $(cts_suites), \
 		$(eval $(call make-cts,$(s),$(b))) \
 	) \
 )

 cov-test-targets=$(foreach t,$(test-list-host),build/host/$(t).info)
 bldversion=$(shell (./util/getversion.sh ; echo VERSION) | $(CPP) -P)

 # lcov fails when multiple instances run at the same time.
 # We need to run them sequentially by using flock
 cmd_lcov=flock /tmp/ec-lcov-lock -c "lcov -q -o $@ -c -d build/host/$*"
 cmd_report_cov=genhtml -q -o build/host/coverage_rpt -t \
 	       "EC Unittest "$(bldversion) $^

 build/host/%.info: run-%
 	$(call quiet,lcov,COV    )

 .PHONY: coverage
 coverage: TEST_FLAG=TEST_COVERAGE=y
 coverage: $(cov-test-targets)
 	$(call quiet,report_cov,REPORT )

 $(out)/firmware_image.lds: common/firmware_image.lds.S
 	$(call quiet,lds,LDS    )
 $(out)/%.lds: core/$(CORE)/ec.lds.S
 	$(call quiet,lds,LDS    )

 $(out)/%_B.lds: core/$(CORE)/ec.lds.S
 	$(call quiet,lds_b,LDS_B  )

 $(out)/%.bin: $(out)/%.obj
 	$(call quiet,obj_to_bin,OBJCOPY)
 	$(if $(wildcard $(PEM)),$(call quiet,rsasign,SIGN   ),)
 	$(if $(wildcard $(PEM)),$(call quiet,extractrw-y,EXTR_RW), \
 			$(call quiet,copyrw-y,COPY_RW))
 	$(call quiet,mv_from_tmp,MV     )

 $(out)/$(BOARD)_vif.txt: $(out)/util/genvif
 	$(call quiet,vif,VIF    )

 flat-y := $(out)/RW/$(PROJECT).RW.flat
 flat-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.flat

 deps += $(out)/firmware_image.lds.d $(flat-y:%.flat=%.lds.d)

 flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/key.vbpubk2
 flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/RW/$(PROJECT).RW.flat.sig

 flat-$(CONFIG_SHAREDLIB) += $(libsharedobjs-y)

 $(out)/$(PROJECT).obj: common/firmware_image.S $(out)/firmware_image.lds \
 	$(flat-y)
 	$(call quiet,flat_to_obj,CAT    )

 $(out)/%.dis: $(out)/%.elf
 	$(call quiet,elf_to_dis,OBJDUMP)

 $(out)/RW/%.hex: $(out)/RW/%.elf $(out)/RW/%.smap
 	$(call quiet,elf_to_hex,OBJCOPY)

 ifeq ($(SIGNED_IMAGES),)
 $(out)/%.flat: $(out)/%.elf $(out)/%.smap utils-build
 	$(call quiet,ec_elf_to_flat,OBJCOPY)

 $(out)/RO/%.hex: $(out)/RO/%.elf $(out)/RO/%.smap
 	$(call quiet,elf_to_hex,OBJCOPY)
 else
 $(out)/RO/%.flat: $(out)/RO/%.elf  $(out)/RO/%.smap
 	$(call quiet,elf_to_signed,RO_SIGN,$(CR50_RO_KEY))

 $(out)/RW/%.flat: $(out)/RW/%.elf  $(out)/RW/%.smap
 	$(call quiet,elf_to_signed,RW_SIGN,$(CR50_RW_KEY))

 $(out)/RO/%.hex: $(out)/RO/%.flat
 	$(call quiet,bin_to_hex,OBJCOPY)
 endif
 $(out)/$(PROJECT).hex: $(out)/$(PROJECT).bin
 	$(call quiet,bin_to_hex,OBJCOPY)

 $(out)/%.vbprik2 $(out)/%.vbpubk2: $(PEM)
 	$(call quiet,key_extract,KEY    )

 $(out)/RW/%.flat.sig: $(out)/RW/%.flat $(out)/key.vbprik2
 	$(call quiet,rsasign_rwsig,SIGN   )

 $(out)/RW/%.elf: override BLD:=RW
 $(out)/RW/%.elf: private objs := $(rw-objs)
 $(out)/RW/%.elf: $(out)/RW/%.lds $(rw-objs) $(libsharedobjs_elf-y)
 	$(call quiet,elf,LD     )

 $(out)/RO/%.elf: override BLD:=RO
 $(out)/RO/%.elf: private objs := $(ro-objs)
 $(out)/RO/%.elf: $(out)/RO/%.lds $(ro-objs) $(libsharedobjs_elf-y)
 	$(call quiet,elf,LD     )

 $(out)/%.elf: $(out)/%.lds $(objs)
 	$(call quiet,elf,LD     )

 $(out)/$(SHOBJLIB)/$(SHOBJLIB).elf: $(sharedlib-objs)
 	@mkdir -p $(out)/$(SHOBJLIB)
 	$(call quiet,sharedlib_elf,LD     )

 $(out)/%.smap: $(out)/%.elf
 	$(call quiet,smap,NM     )

 $(out)/$(PROJECT).exe: $(ro-objs)
 	$(call quiet,exe,EXE    )

 $(out)/RO/%.o:%.c
 	$(call quiet,c_to_o,CC     )
 $(out)/RW/%.o:%.c
 	$(call quiet,c_to_o,CC     )

 $(out)/$(SHOBJLIB)/%.o: override LATE_CFLAGS_DEFINE:=-DSHAREDLIB_IMAGE
 $(out)/$(SHOBJLIB)/%.o:%.c
 	$(call quiet,c_to_o,CC     )

 $(out)/RO/%.o:%.S
 	$(call quiet,c_to_o,AS     )
 $(out)/RW/%.o:%.S
 	$(call quiet,c_to_o,AS     )


 # Conditionally force the rebuilding of ec_version.h only if it would be
 # changed.
 old_version_hash := $(shell cat $(out)/ec_version.h 2> /dev/null | md5sum -)
 new_version_hash := $(shell BOARD=$(BOARD) ./util/getversion.sh | md5sum -)

 ifneq ($(old_version_hash),$(new_version_hash))
 .PHONY: $(out)/ec_version.h
 endif

 # All of the objects have an order only dependency on the ec_version header.
 # This ensures that if ec_version.h needs to be built (because it was marked
 # PHONY above) then it will be rebuilt before any objects.  This is important
 # because some source files will include ec_version.h and fail to compile if
 # it doesn't already exist.  This dependency shouldn't be a normal dependency
 # because that would cause every object to be rebuilt when ec_version.h
 # changes, instead of just the ones that actually depend on it.  The objects
 # that truly depend on ec_version.h will have that information encoded in their
 # .d file.
 $(ro-objs): | $(out)/ec_version.h
 $(rw-objs): | $(out)/ec_version.h
 $(sharedlib-objs): | $(out)/ec_version.h

 $(out)/ec_version.h:
 	$(call quiet,version,VERSION)

 $(build-utils): $(out)/%:$(build-srcs)
 	$(call quiet,c_to_build,BUILDCC)

 $(host-utils): $(out)/%:$(host-srcs)
 	$(call quiet,c_to_host,HOSTCC )

 $(out)/cscope.files: $(out)/$(PROJECT).bin
 	$(call quiet,deps_to_list,SH     )

 $(out)/TAGS: $(out)/cscope.files
 	$(call quiet,etags,ETAGS  )

 $(out)/tags: $(out)/cscope.files
 	$(call quiet,ctags,CTAGS  )

 # TODO: optional make rules for PROJECT_EXTRA
 $(npcx-flash-fw-bin):
 	$(if $(V),,@echo '  EXTBIN ' $(subst $(out)/,,$@) ; )
 	-@ mkdir -p $(@D)
 	-@ $(CC) $(CFLAGS) -MMD -MF $(out)/$(npcx-lfw).d -c $(npcx-flash-fw).c \
 		-o $(out)/$(npcx-flash-fw).o
 	-@ $(CC) $(out)/$(npcx-flash-fw).o $(LDFLAGS) \
 		-o $(out)/$(npcx-flash-fw).elf -Wl,-T,$(npcx-flash-fw).ld \
 		-Wl,-Map,$(out)/$(npcx-flash-fw).map
 	-@ $(OBJCOPY) -O binary $(out)/$(npcx-flash-fw).elf $@

 .PHONY: xrefs
 xrefs: $(call targ_if_prog,etags,$(out)/TAGS) \
 	$(call targ_if_prog,ctags,$(out)/tags)

 .PHONY: flash
 flash: $(out)/ec.bin
 	openocd -c "set BOARD $(BOARD)"\
 		-c "set BUILD_DIR $(out)"\
 		-f $(BDIR)/openocd-flash.cfg

 .PHONY: flash_ec
 flash_ec: $(out)/ec.bin
 	./util/flash_ec --board $(BOARD) --image $(out)/ec.bin

 .PHONY: flash_dfu
 flash_dfu: $(out)/ec.bin
 	sudo ./$(BDIR)/dfu $(out)/ec.bin

 .PHONY: clean
 clean:
 	-rm -rf $(out)

 .PHONY: clobber
 clobber:
 	-rm -rf build TAGS cscope.files cscope.out
 ifneq ($(CCACHE),)
 	$(CCACHE) -c
 endif

 .PHONY: help
 help:
 	@echo "Google Chromium EC build"
 	@echo "Common Targets:"
 	@echo "  all   [BOARD=]     - Build a single board (Default target)"
 	@echo "  clean [BOARD=]     - Clean a single board"
 	@echo "  buildall           - Build and test all boards"
 	@echo "  clobber            - Clean all boards"
 	@echo "  proj-<boardname>   - Build a single board (similar to 'all BOARD=boardname')"
 	@echo "  savesizes          - Save the filesizes of currently built boards for comparison"
 	@echo "  newsizes           - Compare previously saved filesizes against new sizes"
 	@echo "Common Variables:"
 	@echo "  BOARD=             - Set the board name to build (Default is $(BOARD))"
 	@echo "  CROSS_COMPILE=     - Set the compiler for the board"
 	@echo "  V=1                - Show make output"
 	@echo "Example:"
 	@echo "  make BOARD=reef CROSS_COMPILE='arm-eabi-'"

 .PHONY: savesizes
 savesizes:
 	@find $(BUILD_DIR) -name '*.flat' -printf "%s %p\n" | sort --key 2 > \
 		$(FLATSIZE_FILE)
 	@if [ -s $(FLATSIZE_FILE) ]; then \
 		echo "Saved sizes for $$(cat $(FLATSIZE_FILE) | wc -l) files"; \
 	else \
 		echo "Error: No file sizes saved.  Are they built?"; \
 	fi

 .PHONY: newsizes
 newsizes:
 	@if [ ! -s "$(FLATSIZE_FILE)" ]; then \
 		echo "Error: no saved size file ($(FLATSIZE_FILE))."; \
 		echo " Run 'make savesizes' first"; \
 		exit 1; \
 	fi
 	@FILES_CHANGED=0; \
 	FILES_IN_LIST=0; \
 	FILES_COMPARED=0; \
 	FILE_SIZE_CHANGE=0; \
 	NEW_SIZES=$$(find $(BUILD_DIR) -name '*.flat' -printf "%s %p\n"); \
 	while read -r -u 10 line; do \
 		FILES_IN_LIST=$$((FILES_IN_LIST+1)); \
 		FLATFILE=$$(echo "$$line" | cut -f2 -d ' '); \
 		FLATSIZE_ORG=$$(echo "$$line" | cut -f1 -d ' '); \
 		FLATSIZE_NEW="$$(grep "$$FLATFILE" <<< "$$NEW_SIZES" | \
 			sed 's/ .*$$//')"; \
 		if [ -n "$$FLATSIZE_NEW" ]; then \
 			FILES_COMPARED=$$((FILES_COMPARED+1)); \
 			if [ "$$FLATSIZE_NEW" -gt "$$FLATSIZE_ORG" ]; then \
 				FILES_CHANGED=$$((FILES_CHANGED+1)); \
 				FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
 				FLATSIZE_NEW-FLATSIZE_ORG)); \
 				printf "%s grew by %s bytes: (%d to %d)\n" \
 					"$$FLATFILE" \
 					"$$((FLATSIZE_NEW-FLATSIZE_ORG))" \
 					"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
 			elif [ "$$FLATSIZE_NEW" -lt "$$FLATSIZE_ORG" ]; then \
 				FILES_CHANGED=$$((FILES_CHANGED+1)); \
 				FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
 				FLATSIZE_NEW-FLATSIZE_ORG)); \
 				printf "%s shrank by %s bytes: (%d to %d)\n" \
 					"$$FLATFILE" \
 					"$$((FLATSIZE_ORG-FLATSIZE_NEW))" \
 					"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
 			fi; \
 		fi; \
 	done 10< "$(FLATSIZE_FILE)"; \
 	echo "Compared $$FILES_COMPARED of $$FILES_IN_LIST files."; \
 	if [ $$FILES_COMPARED -ne 0 ] && [ $$FILES_CHANGED -eq 0 ]; then \
 		echo "File sizes are unchanged."; \
 	else \
 		printf "%d files changed.\n" "$$FILES_CHANGED"; \
 		printf "Total size change: %s bytes.\n" "$$FILE_SIZE_CHANGE"; \
 		printf "Average size change: %d bytes.\n" \
 			"$$((FILE_SIZE_CHANGE / FILES_CHANGED))"; \
 	fi

 .SECONDARY:

 -include $(deps)
	# -- makefile --
	# vim: set filetype=make :
	# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
	# Use of this source code is governed by a BSD-style license that can be
	# found in the LICENSE file.
	#
	# Embedded Controller firmware build system - common targets
	#

	FLATSIZE_FILE ?= .sizes.txt
	BUILD_DIR := $(firstword $(subst /, ,$(out)))

	build-utils := $(foreach u,$(build-util-bin),$(out)/util/$(u))
	host-utils := $(foreach u,$(host-util-bin),$(out)/util/$(u))
	build-art := $(foreach u,$(build-util-art),$(out)/$(u))
	build-srcs := $(foreach u,$(build-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))
	host-srcs := $(foreach u,$(host-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))

	# Don't do a build test on the following boards:
	skip_boards = OWNERS host it83xx_evb reef_it8320
	boards := $(filter-out $(skip_boards),$(notdir $(wildcard board/* private/board/)))

	# Create output directories if necessary
	_common_dir_create := $(foreach d,$(common_dirs),$(shell [ -d $(out)/$(d) ] \|\| \
	mkdir -p $(out)/$(d)))
	_sharedlib_dir_create := $(foreach d,$(dirs),$(shell \
	[ -d $(out)/$(SHOBJLIB)/$(d) ] \|\| mkdir -p $(out)/$(SHOBJLIB)/$(d)))
	_dir_create := $(foreach d,$(dirs),$(shell [ -d $(out)/$(BLD)/$(d) ] \|\| \
	mkdir -p $(out)/RO/$(d); mkdir -p $(out)/RW/$(d)))
	_dir_y_create := $(foreach d,$(dirs-y),$(shell [ -d $(out)/$(BLD)/$(d) ] \|\| \
	mkdir -p $(out)/RO/$(d); mkdir -p $(out)/RW/$(d)))

	# V unset for normal output, V=1 for verbose output, V=0 for silent build
	# (warnings/errors only). Use echo thus: $(call echo,"stuff to echo")
	ifeq ($(V),0)
	Q := @
	echo = echo -n;
	quiet = echo -n; $(cmd_$(1))
	silent = 1>/dev/null
	silent_err = 2>/dev/null
	else
	echo = echo $(1);
	ifeq ($(V),)
	Q := @
	quiet = @echo ' $(2)' $(subst $(out)/,,$@) ; $(cmd_$(1))
	silent = 1>/dev/null
	silent_err = 2>/dev/null
	else
	Q :=
	quiet = $(cmd_$(1))
	endif
	endif

	# commands to build all targets
	cmd_lds = $(CPP) -P -C -MMD -MF $@.d -MT $@ $(CPPFLAGS) $< -o $@
	cmd_lds_b = $(cmd_lds) -DRW_B_LDS
	# Allow obj_to_bin to be overridden by board or chip specific commands
	cmd_obj_to_bin ?= $(OBJCOPY) --gap-fill=0xff -O binary $^ $(out)/$*.bin.tmp
	cmd_flat_to_obj = $(CC) -T $(out)/firmware_image.lds -nostdlib $(CPPFLAGS) \
	-Wl,--build-id=none -o $@ $<
	# Allow the .roshared section to overlap other sections (itself)
	cmd_ec_elf_to_flat ?= $(OBJCOPY) --set-section-flags .roshared=share \
	-O binary $< $@
	cmd_elf_to_signed ?= sudo $(SIGNER) --key=util/signer/$(3) \
	--b --input=$< --format=bin --output=$@.signed $(SIGNER_EXTRAS) \
	&& sudo chown $(shell whoami) $@.signed && mv $@.signed $@
	cmd_elf_to_dis = $(OBJDUMP) -D $< > $@
	cmd_elf_to_hex = $(OBJCOPY) -O ihex $< $@
	cmd_bin_to_hex = $(OBJCOPY) -I binary -O ihex \
	--change-addresses $(_program_memory_base) $^ $@
	cmd_smap = $(NM) $< \| sort > $@
	cmd_elf = $(CC) $(objs) $(libsharedobjs_elf-y) $(LDFLAGS) \
	-o $@ -Wl,-T,$< -Wl,-Map,$(patsubst %.elf,%.map,$@)
	cmd_exe = $(CC) $(ro-objs) $(HOST_TEST_LDFLAGS) -o $@
	cmd_c_to_o = $(CC) $(CFLAGS) -MMD -MF $@.d -c $< -o $(@D)/$(@F)
	cmd_c_to_build = $(BUILDCC) $(BUILD_CFLAGS) \
	$(sort $(foreach c,$($(F)-objs),util/$(c:%.o=%.c)) $.c) \
	$(BUILD_LDFLAGS) \
	-MMD -MF $@.d -o $@
	cmd_c_to_vif = $(BUILDCC) $(BUILD_CFLAGS) $(STANDALONE_FLAGS) \
	-MMD -MF $@.d -c $< -flto -o $@
	cmd_c_to_host = $(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) -MMD -MF $@.d -o $@ \
	$(sort $(foreach c,$($(F)-objs),util/$(c:%.o=%.c)) $.c)
	cmd_cxx_to_host = $(HOSTCXX) -std=c++0x $(COMMON_WARN) $(HOST_CXXFLAGS)\
	-I ./$($(notdir $@)_ROOT) -o $@ $(filter %.cc,$^) $($(notdir $@)_LIBS)
	cmd_host_test = ./util/run_host_test $* $(silent)
	cmd_version = ./util/getversion.sh > $@
	cmd_vif = $(out)/util/genvif -b $(BOARD) -o $(out)
	cmd_mv_from_tmp = mv $(out)/$.bin.tmp $(out)/$.bin
	cmd_extractrw-y = dd if=$(out)/$(PROJECT).bin.tmp of=$(out)/$(PROJECT).RW.bin \
	bs=1 count=$(_rw_size) skip=$(_rw_off) $(silent_err)
	cmd_copyrw-y = cd $(out) && cp RW/$(PROJECT).RW.flat RW/$(PROJECT).RW.bin
	cmd_sharedlib_elf = $(CC) $(libsharedobjs_deps) \
	-Wl,-T,common/ec.$(SHOBJLIB).ld $(LDFLAGS) \
	-o $(out)/$(SHOBJLIB)/$(SHOBJLIB).elf \
	-Wl,-Map,$(out)/$(SHOBJLIB)/$(SHOBJLIB).map

	# commands for RSA signature: rwsig does not need to sign the whole image
	# (it signs the RW part separately). usbpd1 type needs to sign the final image.
	ifeq ($(CONFIG_RWSIG_TYPE_RWSIG),)
	cmd_rsasign = futility sign --type usbpd1 --pem $(PEM) $(out)/$*.bin.tmp
	else
	cmd_rsasign =
	endif

	cmd_key_extract = futility create $(PEM) $(out)/$* $(silent)

	cmd_rsasign_rwsig = futility sign --type rwsig \
	--prikey $(out)/key.vbprik2 $< $@

	# commands to build optional xref files
	cmd_deps_to_list = cat $(deps) \| tr -d ':\\' \| tr ' ' '\012' \
	\| egrep '\.[chS]$$' \| sort \| uniq > $@
	cmd_etags = etags -o $@ $(shell cat $<)
	cmd_ctags = ctags -o $@ $(shell cat $<)
	targ_if_prog = $(if $(shell which $(1) 2>/dev/null),$(2),)

	# By default, the "build_boards" and "try_build_boards" targets will build all
	# of the boards listed in $(boards). However, the invoker can provide a
	# different list via the BOARDS variable. Providing an empty value for BOARDS
	# is not allowed.
	BOARDS ?= $(boards)
	ifeq ($(BOARDS),)
	$(error BOARDS must be non-empty)
	endif

	FAILED_BOARDS_DIR = .failedboards
	# When building with -j, it's easy to miss errors. If you don't have your shell
	# configured to warn you about nonzero exit, you may not even notice that "make
	# buildall -j" failed. To make it more obvious, we'll do one level of recursion
	# here.
	.PHONY: try_build_boards
	try_build_boards: $(foreach b, $(BOARDS), proj-$(b))

	.PHONY: build_boards
	build_boards:
	@rm -rf $(FAILED_BOARDS_DIR)
	@mkdir $(FAILED_BOARDS_DIR)
	@for b in $(BOARDS); do echo 'starting' > $(FAILED_BOARDS_DIR)/$$b; done
	$(MAKE) try_build_boards

	.PHONY: buildall
	buildall: build_boards
	$(MAKE) build_cts
	$(MAKE) runtests
	@touch .tests-passed
	@echo "$@ completed successfully!"

	showboards:
	@echo $(sort $(boards))

	# Print any important notices at the end of the build.
	.PHONY: notice
	notice: $(config)
	ifeq ($(CONFIG_EXPERIMENTAL_CONSOLE),y)
	ifeq ($(TEST_BUILD),)
	@echo "* NOTE: The experimental console is ENABLED. *"
	@echo "You will need to run the EC-3PO interactive console in the util"
	@echo "directory! Otherwise, you won't be able to enter any commands."
	endif # not a TEST_BUILD
	endif # CONFIG_EXPERIMENTAL_CONSOLE=y

	proj-%:
	@echo 'building' > $(FAILED_BOARDS_DIR)/$*
	@echo "======= building $*"
	$(MAKE) --no-print-directory BOARD=$* V=$(V)
	@rm $(FAILED_BOARDS_DIR)/$*

	dis-y := $(out)/RW/$(PROJECT).RW.dis
	dis-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.dis
	dis-$(CONFIG_SHAREDLIB) += $(out)/$(SHOBJLIB)/$(SHOBJLIB).dis
	dis: $(dis-y)
	.PHONY: dis

	hex-y := $(out)/RO/$(PROJECT).RO.hex $(out)/RW/$(PROJECT).RW.hex $(out)/$(PROJECT).hex
	hex: $(hex-y)
	.PHONY: hex

	.PHONY: utils-art
	utils-art: $(build-art)

	.PHONY: utils-host
	utils-host: $(host-utils)

	.PHONY: utils-build
	utils-build: $(build-utils)

	.PHONY: utils
	utils: utils-host utils-build utils-art

	# On board test binaries
	test-targets=$(foreach t,$(test-list-y),test-$(t))
	.PHONY: $(test-targets)

	ifeq "$(CONFIG_COMMON_RUNTIME)" "y"
	$(test-targets): test-%:
	@set -e ; \
	$(call echo," BUILD $(out)/$*") \
	$(MAKE) --no-print-directory BOARD=$(BOARD) PROJECT=$* \
	V=$(V) out=$(out)/$* TEST_BUILD=y; \
	cp $(out)/$/$.bin $(out)/test-$*.bin
	endif

	.PHONY: tests
	tests: $(test-targets)

	# Emulator test executables
	host-test-targets=$(foreach t,$(test-list-host),host-$(t))
	run-test-targets=$(foreach t,$(test-list-host),run-$(t))
	.PHONY: $(host-test-targets) $(run-test-targets)

	$(host-test-targets): host-%:
	@set -e ; \
	$(call echo," BUILD host - build/host/$*") \
	$(MAKE) --no-print-directory BOARD=host PROJECT=$* \
	V=$(V) out=build/host/$* TEST_BUILD=y EMU_BUILD=y $(TEST_FLAG) \
	CROSS_COMPILE= build/host/$/$.exe

	$(run-test-targets): run-%: host-%
	$(call quiet,host_test,TEST )

	.PHONY: hosttests runtests
	hosttests: $(host-test-targets)
	runtests: $(run-test-targets)

	# Automatically enumerate all suites.
	cts_excludes := common
	cts_suites := $(filter-out $(cts_excludes), \
	$(shell find cts -maxdepth 1 -mindepth 1 -type d -printf "%f "))

	# Add boards below as CTS is expanded.
	cts_boards := stm32l476g-eval nucleo-f072rb

	.PHONY: build_cts

	# Create CTS rule automatically for given suite and board
	# $1: suite name
	# $2: board name
	define make-cts =
	build_cts: cts-$(1)-$(2)
	cts-$(1)-$(2):
	$$(MAKE) CTS_MODULE=$(1) BOARD=$(2)
	# Do not remove this blank line

	endef

	# Create rules for all cts-suite-board combinations. Additionally, we serialize
	# targets per board: cts-x-board -> cts-y-board -> ...
	# If we don't serialize targets, parallel make fails because all suites
	# try to produce ec.bin in the same directory (e.g. build/stm32l476g-eval).
	$(foreach b, $(cts_boards), \
	$(foreach s, $(cts_suites), \
	$(eval $(call make-cts,$(s),$(b))) \
	) \
	)

	cov-test-targets=$(foreach t,$(test-list-host),build/host/$(t).info)
	bldversion=$(shell (./util/getversion.sh ; echo VERSION) \| $(CPP) -P)

	# lcov fails when multiple instances run at the same time.
	# We need to run them sequentially by using flock
	cmd_lcov=flock /tmp/ec-lcov-lock -c "lcov -q -o $@ -c -d build/host/$*"
	cmd_report_cov=genhtml -q -o build/host/coverage_rpt -t \
	"EC Unittest "$(bldversion) $^

	build/host/%.info: run-%
	$(call quiet,lcov,COV )

	.PHONY: coverage
	coverage: TEST_FLAG=TEST_COVERAGE=y
	coverage: $(cov-test-targets)
	$(call quiet,report_cov,REPORT )

	$(out)/firmware_image.lds: common/firmware_image.lds.S
	$(call quiet,lds,LDS )
	$(out)/%.lds: core/$(CORE)/ec.lds.S
	$(call quiet,lds,LDS )

	$(out)/%_B.lds: core/$(CORE)/ec.lds.S
	$(call quiet,lds_b,LDS_B )

	$(out)/%.bin: $(out)/%.obj
	$(call quiet,obj_to_bin,OBJCOPY)
	$(if $(wildcard $(PEM)),$(call quiet,rsasign,SIGN ),)
	$(if $(wildcard $(PEM)),$(call quiet,extractrw-y,EXTR_RW), \
	$(call quiet,copyrw-y,COPY_RW))
	$(call quiet,mv_from_tmp,MV )

	$(out)/$(BOARD)_vif.txt: $(out)/util/genvif
	$(call quiet,vif,VIF )

	flat-y := $(out)/RW/$(PROJECT).RW.flat
	flat-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.flat

	deps += $(out)/firmware_image.lds.d $(flat-y:%.flat=%.lds.d)

	flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/key.vbpubk2
	flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/RW/$(PROJECT).RW.flat.sig

	flat-$(CONFIG_SHAREDLIB) += $(libsharedobjs-y)

	$(out)/$(PROJECT).obj: common/firmware_image.S $(out)/firmware_image.lds \
	$(flat-y)
	$(call quiet,flat_to_obj,CAT )

	$(out)/%.dis: $(out)/%.elf
	$(call quiet,elf_to_dis,OBJDUMP)

	$(out)/RW/%.hex: $(out)/RW/%.elf $(out)/RW/%.smap
	$(call quiet,elf_to_hex,OBJCOPY)

	ifeq ($(SIGNED_IMAGES),)
	$(out)/%.flat: $(out)/%.elf $(out)/%.smap utils-build
	$(call quiet,ec_elf_to_flat,OBJCOPY)

	$(out)/RO/%.hex: $(out)/RO/%.elf $(out)/RO/%.smap
	$(call quiet,elf_to_hex,OBJCOPY)
	else
	$(out)/RO/%.flat: $(out)/RO/%.elf $(out)/RO/%.smap
	$(call quiet,elf_to_signed,RO_SIGN,$(CR50_RO_KEY))

	$(out)/RW/%.flat: $(out)/RW/%.elf $(out)/RW/%.smap
	$(call quiet,elf_to_signed,RW_SIGN,$(CR50_RW_KEY))

	$(out)/RO/%.hex: $(out)/RO/%.flat
	$(call quiet,bin_to_hex,OBJCOPY)
	endif
	$(out)/$(PROJECT).hex: $(out)/$(PROJECT).bin
	$(call quiet,bin_to_hex,OBJCOPY)

	$(out)/%.vbprik2 $(out)/%.vbpubk2: $(PEM)
	$(call quiet,key_extract,KEY )

	$(out)/RW/%.flat.sig: $(out)/RW/%.flat $(out)/key.vbprik2
	$(call quiet,rsasign_rwsig,SIGN )

	$(out)/RW/%.elf: override BLD:=RW
	$(out)/RW/%.elf: private objs := $(rw-objs)
	$(out)/RW/%.elf: $(out)/RW/%.lds $(rw-objs) $(libsharedobjs_elf-y)
	$(call quiet,elf,LD )

	$(out)/RO/%.elf: override BLD:=RO
	$(out)/RO/%.elf: private objs := $(ro-objs)
	$(out)/RO/%.elf: $(out)/RO/%.lds $(ro-objs) $(libsharedobjs_elf-y)
	$(call quiet,elf,LD )

	$(out)/%.elf: $(out)/%.lds $(objs)
	$(call quiet,elf,LD )

	$(out)/$(SHOBJLIB)/$(SHOBJLIB).elf: $(sharedlib-objs)
	@mkdir -p $(out)/$(SHOBJLIB)
	$(call quiet,sharedlib_elf,LD )

	$(out)/%.smap: $(out)/%.elf
	$(call quiet,smap,NM )

	$(out)/$(PROJECT).exe: $(ro-objs)
	$(call quiet,exe,EXE )

	$(out)/RO/%.o:%.c
	$(call quiet,c_to_o,CC )
	$(out)/RW/%.o:%.c
	$(call quiet,c_to_o,CC )

	$(out)/$(SHOBJLIB)/%.o: override LATE_CFLAGS_DEFINE:=-DSHAREDLIB_IMAGE
	$(out)/$(SHOBJLIB)/%.o:%.c
	$(call quiet,c_to_o,CC )

	$(out)/RO/%.o:%.S
	$(call quiet,c_to_o,AS )
	$(out)/RW/%.o:%.S
	$(call quiet,c_to_o,AS )


	# Conditionally force the rebuilding of ec_version.h only if it would be
	# changed.
	old_version_hash := $(shell cat $(out)/ec_version.h 2> /dev/null \| md5sum -)
	new_version_hash := $(shell BOARD=$(BOARD) ./util/getversion.sh \| md5sum -)

	ifneq ($(old_version_hash),$(new_version_hash))
	.PHONY: $(out)/ec_version.h
	endif

	# All of the objects have an order only dependency on the ec_version header.
	# This ensures that if ec_version.h needs to be built (because it was marked
	# PHONY above) then it will be rebuilt before any objects. This is important
	# because some source files will include ec_version.h and fail to compile if
	# it doesn't already exist. This dependency shouldn't be a normal dependency
	# because that would cause every object to be rebuilt when ec_version.h
	# changes, instead of just the ones that actually depend on it. The objects
	# that truly depend on ec_version.h will have that information encoded in their
	# .d file.
	$(ro-objs): \| $(out)/ec_version.h
	$(rw-objs): \| $(out)/ec_version.h
	$(sharedlib-objs): \| $(out)/ec_version.h

	$(out)/ec_version.h:
	$(call quiet,version,VERSION)

	$(build-utils): $(out)/%:$(build-srcs)
	$(call quiet,c_to_build,BUILDCC)

	$(host-utils): $(out)/%:$(host-srcs)
	$(call quiet,c_to_host,HOSTCC )

	$(out)/cscope.files: $(out)/$(PROJECT).bin
	$(call quiet,deps_to_list,SH )

	$(out)/TAGS: $(out)/cscope.files
	$(call quiet,etags,ETAGS )

	$(out)/tags: $(out)/cscope.files
	$(call quiet,ctags,CTAGS )

	# TODO: optional make rules for PROJECT_EXTRA
	$(npcx-flash-fw-bin):
	$(if $(V),,@echo ' EXTBIN ' $(subst $(out)/,,$@) ; )
	-@ mkdir -p $(@D)
	-@ $(CC) $(CFLAGS) -MMD -MF $(out)/$(npcx-lfw).d -c $(npcx-flash-fw).c \
	-o $(out)/$(npcx-flash-fw).o
	-@ $(CC) $(out)/$(npcx-flash-fw).o $(LDFLAGS) \
	-o $(out)/$(npcx-flash-fw).elf -Wl,-T,$(npcx-flash-fw).ld \
	-Wl,-Map,$(out)/$(npcx-flash-fw).map
	-@ $(OBJCOPY) -O binary $(out)/$(npcx-flash-fw).elf $@

	.PHONY: xrefs
	xrefs: $(call targ_if_prog,etags,$(out)/TAGS) \
	$(call targ_if_prog,ctags,$(out)/tags)

	.PHONY: flash
	flash: $(out)/ec.bin
	openocd -c "set BOARD $(BOARD)"\
	-c "set BUILD_DIR $(out)"\
	-f $(BDIR)/openocd-flash.cfg

	.PHONY: flash_ec
	flash_ec: $(out)/ec.bin
	./util/flash_ec --board $(BOARD) --image $(out)/ec.bin

	.PHONY: flash_dfu
	flash_dfu: $(out)/ec.bin
	sudo ./$(BDIR)/dfu $(out)/ec.bin

	.PHONY: clean
	clean:
	-rm -rf $(out)

	.PHONY: clobber
	clobber:
	-rm -rf build TAGS cscope.files cscope.out
	ifneq ($(CCACHE),)
	$(CCACHE) -c
	endif

	.PHONY: help
	help:
	@echo "Google Chromium EC build"
	@echo "Common Targets:"
	@echo " all [BOARD=] - Build a single board (Default target)"
	@echo " clean [BOARD=] - Clean a single board"
	@echo " buildall - Build and test all boards"
	@echo " clobber - Clean all boards"
	@echo " proj-<boardname> - Build a single board (similar to 'all BOARD=boardname')"
	@echo " savesizes - Save the filesizes of currently built boards for comparison"
	@echo " newsizes - Compare previously saved filesizes against new sizes"
	@echo "Common Variables:"
	@echo " BOARD= - Set the board name to build (Default is $(BOARD))"
	@echo " CROSS_COMPILE= - Set the compiler for the board"
	@echo " V=1 - Show make output"
	@echo "Example:"
	@echo " make BOARD=reef CROSS_COMPILE='arm-eabi-'"

	.PHONY: savesizes
	savesizes:
	@find $(BUILD_DIR) -name '*.flat' -printf "%s %p\n" \| sort --key 2 > \
	$(FLATSIZE_FILE)
	@if [ -s $(FLATSIZE_FILE) ]; then \
	echo "Saved sizes for $$(cat $(FLATSIZE_FILE) \| wc -l) files"; \
	else \
	echo "Error: No file sizes saved. Are they built?"; \
	fi

	.PHONY: newsizes
	newsizes:
	@if [ ! -s "$(FLATSIZE_FILE)" ]; then \
	echo "Error: no saved size file ($(FLATSIZE_FILE))."; \
	echo " Run 'make savesizes' first"; \
	exit 1; \
	fi
	@FILES_CHANGED=0; \
	FILES_IN_LIST=0; \
	FILES_COMPARED=0; \
	FILE_SIZE_CHANGE=0; \
	NEW_SIZES=$$(find $(BUILD_DIR) -name '*.flat' -printf "%s %p\n"); \
	while read -r -u 10 line; do \
	FILES_IN_LIST=$$((FILES_IN_LIST+1)); \
	FLATFILE=$$(echo "$$line" \| cut -f2 -d ' '); \
	FLATSIZE_ORG=$$(echo "$$line" \| cut -f1 -d ' '); \
	FLATSIZE_NEW="$$(grep "$$FLATFILE" <<< "$$NEW_SIZES" \| \
	sed 's/ .*$$//')"; \
	if [ -n "$$FLATSIZE_NEW" ]; then \
	FILES_COMPARED=$$((FILES_COMPARED+1)); \
	if [ "$$FLATSIZE_NEW" -gt "$$FLATSIZE_ORG" ]; then \
	FILES_CHANGED=$$((FILES_CHANGED+1)); \
	FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
	FLATSIZE_NEW-FLATSIZE_ORG)); \
	printf "%s grew by %s bytes: (%d to %d)\n" \
	"$$FLATFILE" \
	"$$((FLATSIZE_NEW-FLATSIZE_ORG))" \
	"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
	elif [ "$$FLATSIZE_NEW" -lt "$$FLATSIZE_ORG" ]; then \
	FILES_CHANGED=$$((FILES_CHANGED+1)); \
	FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
	FLATSIZE_NEW-FLATSIZE_ORG)); \
	printf "%s shrank by %s bytes: (%d to %d)\n" \
	"$$FLATFILE" \
	"$$((FLATSIZE_ORG-FLATSIZE_NEW))" \
	"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
	fi; \
	fi; \
	done 10< "$(FLATSIZE_FILE)"; \
	echo "Compared $$FILES_COMPARED of $$FILES_IN_LIST files."; \
	if [ $$FILES_COMPARED -ne 0 ] && [ $$FILES_CHANGED -eq 0 ]; then \
	echo "File sizes are unchanged."; \
	else \
	printf "%d files changed.\n" "$$FILES_CHANGED"; \
	printf "Total size change: %s bytes.\n" "$$FILE_SIZE_CHANGE"; \
	printf "Average size change: %d bytes.\n" \
	"$$((FILE_SIZE_CHANGE / FILES_CHANGED))"; \
	fi

	.SECONDARY:

	-include $(deps)