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# RCC-Project
#
# Copyright (C) 2026 Richard Qin
#
# This file is part of RCC-Project.
#
# RCC-Project is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option) any
# later version.
#
# RCC-Project is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# RCC-Project; see the file COPYING. If not see
# <http://www.gnu.org/licenses/>.
PROJECT := mubios
BUILD_DIR := build
ELF := $(BUILD_DIR)/$(PROJECT).elf
ROM := $(BUILD_DIR)/$(PROJECT).rom
CC := gcc
AS := as
LD := ld
OBJCOPY := objcopy
CFLAGS := -m32 -ffreestanding -fno-pie -fno-stack-protector \
-fno-builtin -nostdinc -Iinclude -Wall -Wextra
ASFLAGS := --32
LDFLAGS := -m elf_i386 -nostdlib -T linker.ld
C_SRCS := $(wildcard core/*.c drivers/*.c services/*.c)
S_SRCS := $(wildcard arch/*.S)
OBJS := $(patsubst %.c,$(BUILD_DIR)/%.o,$(C_SRCS)) \
$(patsubst %.S,$(BUILD_DIR)/%.o,$(S_SRCS))
.PHONY: all elf rom
all: $(ROM)
elf: $(ELF)
rom: $(ROM)
$(ELF): $(OBJS) linker.ld
@mkdir -p $(dir $@)
$(LD) $(LDFLAGS) -o $@ $(OBJS)
$(ROM): $(ELF)
@mkdir -p $(dir $@)
$(OBJCOPY) -O binary $< $@
@test "$$(stat -c %s $@)" -le 65536
@truncate -s 65536 $@
$(BUILD_DIR)/%.o: %.c
@mkdir -p $(dir $@)
$(CC) $(CFLAGS) -c $< -o $@
$(BUILD_DIR)/%.o: %.S
@mkdir -p $(dir $@)
$(AS) $(ASFLAGS) $< -o $@
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