examples/freertos/Makefile - external/github.com/memfault/memfault-firmware-sdk - Git at Google

 # Error on any uset variable
 MAKEFLAGS=--warn-undefined-variables

 # Default to a silent build. Run make with --trace for a verbose build.
 .SILENT:

 # Mac and Linux stat have different options required, set them up here
 ifeq ($(shell uname), Darwin)
     STAT = "stat -f '%z'"
 else
     STAT = "stat -c '%s'"
 endif

 BOARD ?= qemu_mps2_an385

 $(info Building for $(BOARD))

 # Set to 1 to build with templates/memfault_platform_port.c instead of
 # FreeRTOS platform functions. Used to test compilation with template files
 MEMFAULT_TEST_USE_PORT_TEMPLATE ?= 0

 ifeq ($(MEMFAULT_TEST_USE_PORT_TEMPLATE),1)
   ifneq (qemu_mps2_an385,$(BOARD))
     $(error Testing with the template port only supported on the qemu_mps2_an385 board)
   endif
 endif

 BOARD_DIR := boards/$(BOARD)

 BUILD_DIR := build/$(BOARD)

 ELF = $(BUILD_DIR)/main.elf

 ARM_CC ?= arm-none-eabi-gcc
 ARM_CXX ?= arm-none-eabi-g++
 # if cc isn't set by the user, set it to ARM_CC
 ifeq ($(origin CC),default)
 CC := $(ARM_CC)
 CXX := $(ARM_CXX)
 endif
 # use ccache if available
 CCACHE := $(shell command -v ccache 2> /dev/null)
 ifdef CCACHE
 CC := ccache $(CC)
 CXX := ccache $(CXX)
 endif
 OBJCOPY ?= $(shell $(CC) -print-prog-name=objcopy)
 SIZE ?= $(shell $(CC) -print-prog-name=size)
 READELF ?= $(shell $(CC) -print-prog-name=readelf)

 # Check if FreeRTOS location set, add rule to download if not
 FREERTOS_DIR ?=
 ifeq ($(FREERTOS_DIR),)
 FREERTOS_DIR = FreeRTOS-Kernel
 FREERTOS_VER = V11.2.0
 FREERTOS_SHA = 0adc196d4bd52a2d91102b525b0aafc1e14a2386

 # Verify the FreeRTOS directory is present and matches expected SHA
 FREERTOS_STALE = \
     $(shell \
         if ! (echo "$(FREERTOS_SHA)" | diff -q $(FREERTOS_DIR)/.git/HEAD - > /dev/null 2>&1); then \
             echo FREERTOS_STALE; \
         fi \
     )
 .PHONY: FREERTOS_STALE
 $(FREERTOS_DIR)/.git/HEAD: $(FREERTOS_STALE)
 	$(info FREERTOS_DIR needs updating, deleting stale copy (if present) and fetching from git)
 	rm -rf $(FREERTOS_DIR)
 	git -c advice.detachedHead=false clone --branch $(FREERTOS_VER) --depth 1 https://github.com/FreeRTOS/FreeRTOS-Kernel.git $(FREERTOS_DIR)

 .DEFAULT_GOAL :=
 endif

 include $(BOARD_DIR)/Makefile

 # Gather list of FreeRTOS sources
 FREERTOS_SRCS += \
     $(FREERTOS_DIR)/tasks.c \
     $(FREERTOS_DIR)/queue.c \
     $(FREERTOS_DIR)/list.c \
     $(FREERTOS_DIR)/timers.c \
     $(FREERTOS_DIR)/portable/MemMang/heap_4.c \

 # Add application sources
 SRCS += \
     src/main.c \
     src/compact_log.cpp \
     src/console.c \
     src/heap_task.c \
     src/metrics.c \
     src/mpu.c \
     src/memfault/memfault_platform_port.c \
     $(BOARD_DIR)/startup.c \
     $(BOARD_DIR)/memfault_platform_impl.c \
     $(FREERTOS_SRCS) \

 # Use Memfault SDK worker to gather initial Memfault SDK sources and include dirs
 MEMFAULT_SDK_ROOT := ../..
 MEMFAULT_COMPONENTS ?= core util panics metrics demo
 include $(MEMFAULT_SDK_ROOT)/makefiles/MemfaultWorker.mk

 # Add CFLAGS defines for each of the memfault components enabled above
 CFLAGS += $(foreach each, $(MEMFAULT_COMPONENTS), -DMEMFAULT_COMPONENT_$(each)_)

 # Add additional SDK sources to project for FreeRTOS and RAM-backed coredump.
 # Intentionally using a wildcard to trap any new features added- it's nice to
 # have them enabled in this example app.
 SRCS += \
     $(MEMFAULT_COMPONENTS_SRCS) \
         $(MEMFAULT_SDK_ROOT)/ports/panics/src/memfault_platform_ram_backed_coredump.c \

 ifneq ($(MEMFAULT_TEST_USE_PORT_TEMPLATE), 1)
     SRCS += \
         $(wildcard $(MEMFAULT_SDK_ROOT)/ports/freertos/src/*.c)
 endif


 # Fixup build path for objects of the Memfault SDK, all build output kept within build/
 OBJS := $(subst $(MEMFAULT_SDK_ROOT),memfault-firmware-sdk,$(SRCS:%=$(BUILD_DIR)/%.o))

 INCLUDE_PATHS += \
     -I$(FREERTOS_DIR)/include \
     -I. \
     -Isrc \
     -Isrc/memfault \
     -I$(MEMFAULT_COMPONENTS_INC_FOLDERS) \
     -I$(MEMFAULT_SDK_ROOT)/ports/include \
     -I$(MEMFAULT_SDK_ROOT) \
     -I$(FREERTOS_DIR)/portable/GCC/$(FREERTOS_PORT) \

 # generic (non-arch-specific) CFLAGS
 CFLAGS += \
     -nostartfiles \
     -Werror \
     -Wall \
     -Wextra \
     -Werror=undef \
     -ffunction-sections \
     -fdata-sections \
     -ggdb3 \
     -Og \
     -MD \
     -fdebug-prefix-map="$(shell pwd)"=. \
     -DBOARD=\"$(BOARD)\" \
     $(ARCH_CFLAGS) \

 # Enable the self test by default
 MEMFAULT_DEMO_CLI_SELF_TEST ?= 1
 CFLAGS += \
   -DMEMFAULT_DEMO_CLI_SELF_TEST=$(MEMFAULT_DEMO_CLI_SELF_TEST) \
   -DMEMFAULT_TEST_USE_PORT_TEMPLATE=$(MEMFAULT_TEST_USE_PORT_TEMPLATE)

 LINKER_SCRIPT = $(BOARD_DIR)/linker.ld

 LDFLAGS += \
     -Wl,-T$(LINKER_SCRIPT) \
     -Wl,--gc-sections \
     --specs=nano.specs \
     --specs=rdimon.specs \
     -Wl,-lc \
     -Wl,-lrdimon \
     -Wl,-Map=$(BUILD_DIR)/main.map \
     -Wl,--build-id \
     -Wl,--print-memory-usage \

 # Check if the compiler is = 4.9.3, if so, disable some incopatible flags. The
 # warnings they emit are due to incomplete support for C99 braced initializers
 # in this old version of GCC.
 GCC_VERSION := $(shell $(CC) -dumpversion)
 ifeq ($(GCC_VERSION),4.9.3)
     $(info Detected GCC 4.9.3, disabling some flags)
     CFLAGS += \
         -Wno-error=missing-braces \
         -Wno-error=missing-field-initializers \

     # remove -Wl,--print-memory-usage from LDFLAGS
     COMMA=,
     LDFLAGS := $(filter-out -Wl$(COMMA)--print-memory-usage,$(LDFLAGS))
 endif


 .PHONY: all
 all: $(ELF)

 # Require clone to complete as prereq for sources
 $(SRCS): $(FREERTOS_DIR)/.git/HEAD

 # Store computed cflags in a file; it's a prerequisite for all objects. Use a
 # shell hack to check if the current cflags are different from the stored file,
 # and make it out of date if so
 # If CFLAGS differ from last build, rebuild all files
 RAW_CFLAGS := $(CFLAGS) $(LDFLAGS)
 CFLAGS_STALE = \
     $(shell \
         if ! (echo "$(RAW_CFLAGS)" | diff -q $(BUILD_DIR)/cflags - > /dev/null 2>&1); then \
             echo CFLAGS_STALE; \
         fi \
     )
 .PHONY: CFLAGS_STALE
 $(BUILD_DIR)/cflags: $(CFLAGS_STALE) Makefile
 	mkdir -p $(dir $@)
 	echo "$(RAW_CFLAGS)" > $@

 # Add rules for patched build objects from SDK
 $(BUILD_DIR)/memfault-firmware-sdk/%.c.o: $(MEMFAULT_SDK_ROOT)/%.c $(BUILD_DIR)/cflags
 	mkdir -p $(dir $@)
 	$(info Compiling $<)
 	$(CC) -std=gnu11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

 $(BUILD_DIR)/%.c.o: %.c $(BUILD_DIR)/cflags
 	mkdir -p $(dir $@)
 	$(info Compiling $<)
 	$(CC) -std=gnu11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

 $(BUILD_DIR)/%.cpp.o: %.cpp $(BUILD_DIR)/cflags
 	mkdir -p $(dir $@)
 	$(info Compiling $<)
 	$(CXX) -std=gnu++11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

 $(ELF).uncompressed: $(OBJS) $(LINKER_SCRIPT)
 	$(info Linking $@)
 	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@

 $(ELF): $(ELF).uncompressed
 	echo -n 'Compressing debug info... '
 	$(OBJCOPY) --compress-debug-sections $^ $@
 	echo From $$("$(STAT)" $^) to $$("$(STAT)" $@) bytes
 	$(SIZE) $@
 	$(READELF) -n $@ | grep 'Build ID'


 -include $(OBJS:.o=.d)

 .PHONY: debug
 debug: $(ELF)
 	$(info Starting debugger)
 	$(DEBUG_COMMAND)

 .PHONY: gdb
 gdb: $(ELF)
 	$(GDB_COMMAND)

 .PHONY: run
 run: $(ELF)
 	$(RUN_COMMAND)

 # This target dumps the preprocessed output of the memfault_metrics.c file
 .PHONY: memfault_metrics.c
 memfault_metrics.c: # build/qemu_mps2_an385/memfault-firmware-sdk/components/metrics/src/memfault_metrics.c.o
 	$(CC) $(CFLAGS:-MD=) $(INCLUDE_PATHS) -c $(MEMFAULT_SDK_ROOT)/components/metrics/src/memfault_metrics.c -E -P -o -

 .PHONY: clean
 clean:
 	rm -rf build
	# Error on any uset variable
	MAKEFLAGS=--warn-undefined-variables

	# Default to a silent build. Run make with --trace for a verbose build.
	.SILENT:

	# Mac and Linux stat have different options required, set them up here
	ifeq ($(shell uname), Darwin)
	STAT = "stat -f '%z'"
	else
	STAT = "stat -c '%s'"
	endif

	BOARD ?= qemu_mps2_an385

	$(info Building for $(BOARD))

	# Set to 1 to build with templates/memfault_platform_port.c instead of
	# FreeRTOS platform functions. Used to test compilation with template files
	MEMFAULT_TEST_USE_PORT_TEMPLATE ?= 0

	ifeq ($(MEMFAULT_TEST_USE_PORT_TEMPLATE),1)
	ifneq (qemu_mps2_an385,$(BOARD))
	$(error Testing with the template port only supported on the qemu_mps2_an385 board)
	endif
	endif

	BOARD_DIR := boards/$(BOARD)

	BUILD_DIR := build/$(BOARD)

	ELF = $(BUILD_DIR)/main.elf

	ARM_CC ?= arm-none-eabi-gcc
	ARM_CXX ?= arm-none-eabi-g++
	# if cc isn't set by the user, set it to ARM_CC
	ifeq ($(origin CC),default)
	CC := $(ARM_CC)
	CXX := $(ARM_CXX)
	endif
	# use ccache if available
	CCACHE := $(shell command -v ccache 2> /dev/null)
	ifdef CCACHE
	CC := ccache $(CC)
	CXX := ccache $(CXX)
	endif
	OBJCOPY ?= $(shell $(CC) -print-prog-name=objcopy)
	SIZE ?= $(shell $(CC) -print-prog-name=size)
	READELF ?= $(shell $(CC) -print-prog-name=readelf)

	# Check if FreeRTOS location set, add rule to download if not
	FREERTOS_DIR ?=
	ifeq ($(FREERTOS_DIR),)
	FREERTOS_DIR = FreeRTOS-Kernel
	FREERTOS_VER = V11.2.0
	FREERTOS_SHA = 0adc196d4bd52a2d91102b525b0aafc1e14a2386

	# Verify the FreeRTOS directory is present and matches expected SHA
	FREERTOS_STALE = \
	$(shell \
	if ! (echo "$(FREERTOS_SHA)" \| diff -q $(FREERTOS_DIR)/.git/HEAD - > /dev/null 2>&1); then \
	echo FREERTOS_STALE; \
	fi \
	)
	.PHONY: FREERTOS_STALE
	$(FREERTOS_DIR)/.git/HEAD: $(FREERTOS_STALE)
	$(info FREERTOS_DIR needs updating, deleting stale copy (if present) and fetching from git)
	rm -rf $(FREERTOS_DIR)
	git -c advice.detachedHead=false clone --branch $(FREERTOS_VER) --depth 1 https://github.com/FreeRTOS/FreeRTOS-Kernel.git $(FREERTOS_DIR)

	.DEFAULT_GOAL :=
	endif

	include $(BOARD_DIR)/Makefile

	# Gather list of FreeRTOS sources
	FREERTOS_SRCS += \
	$(FREERTOS_DIR)/tasks.c \
	$(FREERTOS_DIR)/queue.c \
	$(FREERTOS_DIR)/list.c \
	$(FREERTOS_DIR)/timers.c \
	$(FREERTOS_DIR)/portable/MemMang/heap_4.c \

	# Add application sources
	SRCS += \
	src/main.c \
	src/compact_log.cpp \
	src/console.c \
	src/heap_task.c \
	src/metrics.c \
	src/mpu.c \
	src/memfault/memfault_platform_port.c \
	$(BOARD_DIR)/startup.c \
	$(BOARD_DIR)/memfault_platform_impl.c \
	$(FREERTOS_SRCS) \

	# Use Memfault SDK worker to gather initial Memfault SDK sources and include dirs
	MEMFAULT_SDK_ROOT := ../..
	MEMFAULT_COMPONENTS ?= core util panics metrics demo
	include $(MEMFAULT_SDK_ROOT)/makefiles/MemfaultWorker.mk

	# Add CFLAGS defines for each of the memfault components enabled above
	CFLAGS += $(foreach each, $(MEMFAULT_COMPONENTS), -DMEMFAULT_COMPONENT_$(each)_)

	# Add additional SDK sources to project for FreeRTOS and RAM-backed coredump.
	# Intentionally using a wildcard to trap any new features added- it's nice to
	# have them enabled in this example app.
	SRCS += \
	$(MEMFAULT_COMPONENTS_SRCS) \
	$(MEMFAULT_SDK_ROOT)/ports/panics/src/memfault_platform_ram_backed_coredump.c \

	ifneq ($(MEMFAULT_TEST_USE_PORT_TEMPLATE), 1)
	SRCS += \
	$(wildcard $(MEMFAULT_SDK_ROOT)/ports/freertos/src/*.c)
	endif


	# Fixup build path for objects of the Memfault SDK, all build output kept within build/
	OBJS := $(subst $(MEMFAULT_SDK_ROOT),memfault-firmware-sdk,$(SRCS:%=$(BUILD_DIR)/%.o))

	INCLUDE_PATHS += \
	-I$(FREERTOS_DIR)/include \
	-I. \
	-Isrc \
	-Isrc/memfault \
	-I$(MEMFAULT_COMPONENTS_INC_FOLDERS) \
	-I$(MEMFAULT_SDK_ROOT)/ports/include \
	-I$(MEMFAULT_SDK_ROOT) \
	-I$(FREERTOS_DIR)/portable/GCC/$(FREERTOS_PORT) \

	# generic (non-arch-specific) CFLAGS
	CFLAGS += \
	-nostartfiles \
	-Werror \
	-Wall \
	-Wextra \
	-Werror=undef \
	-ffunction-sections \
	-fdata-sections \
	-ggdb3 \
	-Og \
	-MD \
	-fdebug-prefix-map="$(shell pwd)"=. \
	-DBOARD=\"$(BOARD)\" \
	$(ARCH_CFLAGS) \

	# Enable the self test by default
	MEMFAULT_DEMO_CLI_SELF_TEST ?= 1
	CFLAGS += \
	-DMEMFAULT_DEMO_CLI_SELF_TEST=$(MEMFAULT_DEMO_CLI_SELF_TEST) \
	-DMEMFAULT_TEST_USE_PORT_TEMPLATE=$(MEMFAULT_TEST_USE_PORT_TEMPLATE)

	LINKER_SCRIPT = $(BOARD_DIR)/linker.ld

	LDFLAGS += \
	-Wl,-T$(LINKER_SCRIPT) \
	-Wl,--gc-sections \
	--specs=nano.specs \
	--specs=rdimon.specs \
	-Wl,-lc \
	-Wl,-lrdimon \
	-Wl,-Map=$(BUILD_DIR)/main.map \
	-Wl,--build-id \
	-Wl,--print-memory-usage \

	# Check if the compiler is = 4.9.3, if so, disable some incopatible flags. The
	# warnings they emit are due to incomplete support for C99 braced initializers
	# in this old version of GCC.
	GCC_VERSION := $(shell $(CC) -dumpversion)
	ifeq ($(GCC_VERSION),4.9.3)
	$(info Detected GCC 4.9.3, disabling some flags)
	CFLAGS += \
	-Wno-error=missing-braces \
	-Wno-error=missing-field-initializers \

	# remove -Wl,--print-memory-usage from LDFLAGS
	COMMA=,
	LDFLAGS := $(filter-out -Wl$(COMMA)--print-memory-usage,$(LDFLAGS))
	endif



	.PHONY: all
	all: $(ELF)

	# Require clone to complete as prereq for sources
	$(SRCS): $(FREERTOS_DIR)/.git/HEAD

	# Store computed cflags in a file; it's a prerequisite for all objects. Use a
	# shell hack to check if the current cflags are different from the stored file,
	# and make it out of date if so
	# If CFLAGS differ from last build, rebuild all files
	RAW_CFLAGS := $(CFLAGS) $(LDFLAGS)
	CFLAGS_STALE = \
	$(shell \
	if ! (echo "$(RAW_CFLAGS)" \| diff -q $(BUILD_DIR)/cflags - > /dev/null 2>&1); then \
	echo CFLAGS_STALE; \
	fi \
	)
	.PHONY: CFLAGS_STALE
	$(BUILD_DIR)/cflags: $(CFLAGS_STALE) Makefile
	mkdir -p $(dir $@)
	echo "$(RAW_CFLAGS)" > $@

	# Add rules for patched build objects from SDK
	$(BUILD_DIR)/memfault-firmware-sdk/%.c.o: $(MEMFAULT_SDK_ROOT)/%.c $(BUILD_DIR)/cflags
	mkdir -p $(dir $@)
	$(info Compiling $<)
	$(CC) -std=gnu11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

	$(BUILD_DIR)/%.c.o: %.c $(BUILD_DIR)/cflags
	mkdir -p $(dir $@)
	$(info Compiling $<)
	$(CC) -std=gnu11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

	$(BUILD_DIR)/%.cpp.o: %.cpp $(BUILD_DIR)/cflags
	mkdir -p $(dir $@)
	$(info Compiling $<)
	$(CXX) -std=gnu++11 $(CFLAGS) $(INCLUDE_PATHS) -c $< -o $@

	$(ELF).uncompressed: $(OBJS) $(LINKER_SCRIPT)
	$(info Linking $@)
	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@

	$(ELF): $(ELF).uncompressed
	echo -n 'Compressing debug info... '
	$(OBJCOPY) --compress-debug-sections $^ $@
	echo From $$("$(STAT)" $^) to $$("$(STAT)" $@) bytes
	$(SIZE) $@
	$(READELF) -n $@ \| grep 'Build ID'


	-include $(OBJS:.o=.d)

	.PHONY: debug
	debug: $(ELF)
	$(info Starting debugger)
	$(DEBUG_COMMAND)

	.PHONY: gdb
	gdb: $(ELF)
	$(GDB_COMMAND)

	.PHONY: run
	run: $(ELF)
	$(RUN_COMMAND)

	# This target dumps the preprocessed output of the memfault_metrics.c file
	.PHONY: memfault_metrics.c
	memfault_metrics.c: # build/qemu_mps2_an385/memfault-firmware-sdk/components/metrics/src/memfault_metrics.c.o
	$(CC) $(CFLAGS:-MD=) $(INCLUDE_PATHS) -c $(MEMFAULT_SDK_ROOT)/components/metrics/src/memfault_metrics.c -E -P -o -

	.PHONY: clean
	clean:
	rm -rf build