BarinkOS/Makefile

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Makefile
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EMULATOR = qemu-system-i386
AS = ${HOME}/opt/cross/bin/i686-elf-as
CC = ${HOME}/opt/cross/bin/i686-elf-gcc
CPP = ${HOME}/opt/cross/bin/i686-elf-g++
CFLAGS = -ffreestanding -O2 -Wall -Wextra
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OFILES = $(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/io.o $(BUILD_DIR)/MMU.o
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SRC_DIR = src
BUILD_DIR = build
CRTBEGIN_OBJ = $(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
CRTEND_OBJ = $(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
CRTI_OBJ = $(BUILD_DIR)/crti.o
CRTN_OBJ = $(BUILD_DIR)/crtn.o
OBJ_LINK_LIST = $(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OFILES) $(CRTEND_OBJ) $(CRTN_OBJ)
INTERNAL_OBJS = $(CRTI_OBJ) $(OFILES) $(CRTN_OBJ)
all: clean build
build: build_kernel run
run:
$(EMULATOR) -kernel $(BUILD_DIR)/myos.bin -serial stdio
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build_kernel: $(OBJ_LINK_LIST)
$(CC) -T $(SRC_DIR)/kernel/arch/i386/linker.ld -o $(BUILD_DIR)/myos.bin \
-ffreestanding -O2 -nostdlib $(OBJ_LINK_LIST) -lgcc
build_x86_64:
$(AS) $(SRC_DIR)/cgc/x86_64/crti.s -o $(BUILD_DIR)/crti_64.o
$(AS) $(SRC_DIR)/cgc/x86_64/crtn.s -o $(BUILD_DIR)/crtn.o
clean:
rm -f $(BUILD_DIR)/myos.bin $(INTERNAL_OBJS)
$(BUILD_DIR)/kernel.o:
$(CPP) -c $(SRC_DIR)/kernel/kernel.cpp -o $(BUILD_DIR)/kernel.o $(CFLAGS) -fno-exceptions -fno-rtti
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$(BUILD_DIR)/kterm.o:
$(CC) -c $(SRC_DIR)/kernel/arch/i386/tty/kterm.c -o $(BUILD_DIR)/kterm.o $(CFLAGS) -std=gnu99
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$(BUILD_DIR)/boot.o:
$(AS) $(SRC_DIR)/kernel/arch/i386/boot.s -o $(BUILD_DIR)/boot.o
$(BUILD_DIR)/crti.o:
$(AS) $(SRC_DIR)/kernel/arch/i386/crti.s -o $(BUILD_DIR)/crti.o
$(BUILD_DIR)/crtn.o:
$(AS) $(SRC_DIR)/kernel/arch/i386/crtn.s -o $(BUILD_DIR)/crtn.o
$(BUILD_DIR)/io.o:
$(CPP) -c $(SRC_DIR)/kernel/io.cpp -o $(BUILD_DIR)/io.o $(CFLAGS) -fno-exceptions -fno-rtti
$(BUILD_DIR)/MMU.o:
$(CPP) -c $(SRC_DIR)/kernel/MMU.cpp -o $(BUILD_DIR)/MMU.o $(CFLAGS) -fno-exceptions -fno-rtti