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