Makefile

# Malbolge RTOS — host simulation and STM32U585 firmware.

# ---- host build (run the kernel + matrix scroller on your PC) ----
HOST_CC      ?= gcc
HOST_CFLAGS  ?= -O2 -Wall -Wextra -Isrc
HOST_SRC      = host/main_host.c src/malbolge_vm.c src/kernel.c src/display.c

.PHONY: host run clean arm
host: build/host/malbolge_rtos
build/host/malbolge_rtos: $(HOST_SRC)
	@mkdir -p build/host
	$(HOST_CC) $(HOST_CFLAGS) -o $@ $(HOST_SRC)

run: host
	./build/host/malbolge_rtos

# ---- STM32U585 firmware (bare metal) ----
CROSS   ?= arm-none-eabi-
ACC      = $(CROSS)gcc
AOBJCOPY = $(CROSS)objcopy
ASIZE    = $(CROSS)size
MCU_FLAGS = -mcpu=cortex-m33 -mthumb -mfpu=fpv5-sp-d16 -mfloat-abi=hard
ACFLAGS  = $(MCU_FLAGS) -O2 -g -Wall -Wextra -ffreestanding -Isrc -Iport \
           -Iport/cmsis -DSTM32U585xx \
           -ffunction-sections -fdata-sections
ALDFLAGS = $(MCU_FLAGS) -T port/stm32u585.ld -nostartfiles \
           -Wl,--gc-sections -Wl,-Map=build/arm/firmware.map
ARM_SRC  = port/main.c port/startup_stm32u585.c port/board.c \
           src/malbolge_vm.c src/kernel.c src/display.c

arm: build/arm/firmware.bin
build/arm/firmware.elf: $(ARM_SRC) port/stm32u585.ld
	@mkdir -p build/arm
	$(ACC) $(ACFLAGS) $(ALDFLAGS) -o $@ $(ARM_SRC)
	$(ASIZE) $@
build/arm/firmware.bin: build/arm/firmware.elf
	$(AOBJCOPY) -O binary $< $@

clean:
	rm -rf build