# Makefile fragment for generating native .mpy files from C source # MPY_DIR must be set to the top of the MicroPython source tree BUILD ?= build ECHO = @echo RM = /bin/rm MKDIR = /bin/mkdir PYTHON = python3 MPY_CROSS = $(MPY_DIR)/mpy-cross/mpy-cross MPY_TOOL = $(PYTHON) $(MPY_DIR)/tools/mpy-tool.py MPY_LD = $(PYTHON) $(MPY_DIR)/tools/mpy_ld.py Q = @ ifeq ("$(origin V)", "command line") ifeq ($(V),1) Q = MPY_LD += '-vvv' endif endif ARCH_UPPER = $(shell echo $(ARCH) | tr '[:lower:]' '[:upper:]') CONFIG_H = $(BUILD)/$(MOD).config.h CFLAGS += -I. -I$(MPY_DIR) CFLAGS += -std=c99 CFLAGS += -Os CFLAGS += -Wall -Werror -DNDEBUG CFLAGS += -DNO_QSTR CFLAGS += -DMP_CONFIGFILE='<$(CONFIG_H)>' CFLAGS += -fpic -fno-common CFLAGS += -U _FORTIFY_SOURCE # prevent use of __*_chk libc functions #CFLAGS += -fdata-sections -ffunction-sections MPY_CROSS_FLAGS += -march=$(ARCH) SRC_O += $(addprefix $(BUILD)/, $(patsubst %.c,%.o,$(filter %.c,$(SRC)))) SRC_MPY += $(addprefix $(BUILD)/, $(patsubst %.py,%.mpy,$(filter %.py,$(SRC)))) ################################################################################ # Architecture configuration ifeq ($(ARCH),x86) # x86 CROSS = CFLAGS += -m32 -fno-stack-protector MPY_CROSS_FLAGS += -mcache-lookup-bc else ifeq ($(ARCH),x64) # x64 CROSS = CFLAGS += -fno-stack-protector MPY_CROSS_FLAGS += -mcache-lookup-bc else ifeq ($(ARCH),armv7m) # thumb CROSS = arm-none-eabi- CFLAGS += -mthumb -mcpu=cortex-m3 else ifeq ($(ARCH),armv7emsp) # thumb CROSS = arm-none-eabi- CFLAGS += -mthumb -mcpu=cortex-m4 CFLAGS += -mfpu=fpv4-sp-d16 -mfloat-abi=hard else ifeq ($(ARCH),armv7emdp) # thumb CROSS = arm-none-eabi- CFLAGS += -mthumb -mcpu=cortex-m7 CFLAGS += -mfpu=fpv5-d16 -mfloat-abi=hard else ifeq ($(ARCH),xtensa) # xtensa CROSS = xtensa-lx106-elf- CFLAGS += -mforce-l32 else ifeq ($(ARCH),xtensawin) # xtensawin CROSS = xtensa-esp32-elf- CFLAGS += else $(error architecture '$(ARCH)' not supported) endif CFLAGS += $(CFLAGS_EXTRA) ################################################################################ # Build rules .PHONY: all clean all: $(MOD).mpy clean: $(RM) -rf $(BUILD) $(CLEAN_EXTRA) # Create build destination directories first BUILD_DIRS = $(sort $(dir $(CONFIG_H) $(SRC_O) $(SRC_MPY))) $(CONFIG_H) $(SRC_O) $(SRC_MPY): | $(BUILD_DIRS) $(BUILD_DIRS): $(Q)$(MKDIR) -p $@ # Preprocess all source files to generate $(CONFIG_H) $(CONFIG_H): $(SRC) $(ECHO) "GEN $@" $(Q)$(MPY_LD) --arch $(ARCH) --preprocess -o $@ $^ # Build .o from .c source files $(BUILD)/%.o: %.c $(CONFIG_H) Makefile $(ECHO) "CC $<" $(Q)$(CROSS)gcc $(CFLAGS) -o $@ -c $< # Build .mpy from .py source files $(BUILD)/%.mpy: %.py $(ECHO) "MPY $<" $(Q)$(MPY_CROSS) $(MPY_CROSS_FLAGS) -o $@ $< # Build native .mpy from object files $(BUILD)/$(MOD).native.mpy: $(SRC_O) $(ECHO) "LINK $<" $(Q)$(MPY_LD) --arch $(ARCH) --qstrs $(CONFIG_H) -o $@ $^ # Build final .mpy from all intermediate .mpy files $(MOD).mpy: $(BUILD)/$(MOD).native.mpy $(SRC_MPY) $(ECHO) "GEN $@" $(Q)$(MPY_TOOL) --merge -o $@ $^