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# ---------------------------------------
# Common make definition for all examples
# ---------------------------------------
#-------------- TOP and CURRENT_PATH ------------
# Set TOP to be the path to get from the current directory (where make was
# invoked) to the top of the tree. $(lastword $(MAKEFILE_LIST)) returns
# the name of this makefile relative to where make was invoked.
THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
# strip off /tools/top.mk to get for example ../../..
# and Set TOP to an absolute path
TOP = $(abspath $(subst make.mk,..,$(THIS_MAKEFILE)))
# Set CURRENT_PATH to the relative path from TOP to the current directory, ie examples/device/cdc_msc_freertos
CURRENT_PATH = $(subst $(TOP)/,,$(abspath .))
# Detect whether shell style is windows or not
# https://stackoverflow.com/questions/714100/os-detecting-makefile/52062069#52062069
ifeq '$(findstring ;,$(PATH))' ';'
# PATH contains semicolon - so we're definitely on Windows.
CMDEXE := 1
# makefile shell commands should use syntax for DOS CMD, not unix sh
# Unfortunately, SHELL may point to sh or bash, which can't accept DOS syntax.
# We can't just use sh, because while sh and/or bash shell may be available,
# many Windows environments won't have utilities like realpath used below, so...
# Force DOS command shell on Windows.
SHELL := cmd.exe
endif
# Build directory
BUILD := _build/$(BOARD)
PROJECT := $(notdir $(CURDIR))
BIN := $(TOP)/_bin/$(BOARD)/$(notdir $(CURDIR))
# Handy check parameter function
check_defined = \
$(strip $(foreach 1,$1, \
$(call __check_defined,$1,$(strip $(value 2)))))
__check_defined = \
$(if $(value $1),, \
$(error Undefined make flag: $1$(if $2, ($2))))
#-------------- Select the board to build for. ------------
# Board without family
ifneq ($(wildcard $(TOP)/hw/bsp/$(BOARD)/board.mk),)
BOARD_PATH := hw/bsp/$(BOARD)
FAMILY :=
endif
# Board within family
ifeq ($(BOARD_PATH),)
BOARD_PATH := $(subst $(TOP)/,,$(wildcard $(TOP)/hw/bsp/*/boards/$(BOARD)))
FAMILY := $(word 3, $(subst /, ,$(BOARD_PATH)))
FAMILY_PATH = hw/bsp/$(FAMILY)
endif
ifeq ($(BOARD_PATH),)
$(info You must provide a BOARD parameter with 'BOARD=')
$(error Invalid BOARD specified)
endif
ifeq ($(FAMILY),)
include $(TOP)/hw/bsp/$(BOARD)/board.mk
else
# Include Family and Board specific defs
include $(TOP)/$(FAMILY_PATH)/family.mk
SRC_C += $(subst $(TOP)/,,$(wildcard $(TOP)/$(FAMILY_PATH)/*.c))
endif
#-------------- Cross Compiler ------------
# Can be set by board, default to ARM GCC
CROSS_COMPILE ?= arm-none-eabi-
ifeq ($(CC),iccarm)
USE_IAR = 1
endif
ifdef USE_IAR
AS = iasmarm
LD = ilinkarm
OBJCOPY = ielftool
SIZE = size
else
CC = $(CROSS_COMPILE)gcc
CXX = $(CROSS_COMPILE)g++
AS = $(CC) -x assembler-with-cpp
LD = $(CC)
GDB = $(CROSS_COMPILE)gdb
OBJCOPY = $(CROSS_COMPILE)objcopy
SIZE = $(CROSS_COMPILE)size
endif
ifeq ($(CMDEXE),1)
CP = copy
RM = del
MKDIR = mkdir
PYTHON = python
else
CP = cp
RM = rm
MKDIR = mkdir
PYTHON = python3
endif
#-------------- Source files and compiler flags --------------
# Include all source C in family & board folder
SRC_C += hw/bsp/board.c
SRC_C += $(subst $(TOP)/,,$(wildcard $(TOP)/$(BOARD_PATH)/*.c))
INC += $(TOP)/$(FAMILY_PATH)
# Allow for -Os to be changed by board makefiles in case -Os is not allowed
CFLAGS_OPTIMIZED ?= -Os
# GCC Compiler Flags
GCC_CFLAGS += \
-ggdb \
-fdata-sections \
-ffunction-sections \
-fsingle-precision-constant \
-fno-strict-aliasing \
-Wall \
-Wextra \
-Werror \
-Wfatal-errors \
-Wdouble-promotion \
-Wstrict-prototypes \
-Wstrict-overflow \
-Werror-implicit-function-declaration \
-Wfloat-equal \
-Wundef \
-Wshadow \
-Wwrite-strings \
-Wsign-compare \
-Wmissing-format-attribute \
-Wunreachable-code \
-Wcast-align \
-Wcast-function-type \
-Wcast-qual \
-Wnull-dereference \
-Wuninitialized \
-Wunused \
-Wredundant-decls
# conversion is too strict for most mcu driver, may be disable sign/int/arith-conversion
# -Wconversion
# Debugging/Optimization
ifeq ($(DEBUG), 1)
GCC_CFLAGS += -O0
NO_LTO = 1
else
GCC_CFLAGS += $(CFLAGS_OPTIMIZED)
endif
# Log level is mapped to TUSB DEBUG option
ifneq ($(LOG),)
CMAKE_DEFSYM += -DLOG=$(LOG)
CFLAGS += -DCFG_TUSB_DEBUG=$(LOG)
endif
# Logger: default is uart, can be set to rtt or swo
ifneq ($(LOGGER),)
CMAKE_DEFSYM += -DLOGGER=$(LOGGER)
endif
ifeq ($(LOGGER),rtt)
CFLAGS += -DLOGGER_RTT -DSEGGER_RTT_MODE_DEFAULT=SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL
RTT_SRC = lib/SEGGER_RTT
INC += $(TOP)/$(RTT_SRC)/RTT
SRC_C += $(RTT_SRC)/RTT/SEGGER_RTT.c
else ifeq ($(LOGGER),swo)
CFLAGS += -DLOGGER_SWO
endif
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