SaharaOS/Makefile at master · HamilcarR/SaharaOS · GitHub

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EXEC = SaharaOS
INITRD = fs_gen/initrd.img.o
CC = ${TARGET}-gcc
LD = ${TARGET}-ld
CFLAGS = -fno-PIC -mno-red-zone -g -ffreestanding -pedantic -Wall -Wextra
LFLAGS = -nostdlib -ffreestanding -lgcc
BOOTLOADER_DIR = ./bootloader
BOOTLOADER = $(BOOTLOADER_DIR)/bootloader.bin

ASM_DIR = ./kernel/asm
KERNEL_ENTRY = $(BOOTLOADER_DIR)/kernel_entry/kernel_entry.o
KERNEL_ENTRY_FILE = $(BOOTLOADER_DIR)/kernel_entry/kernel_entry.asm
KERNEL = ./kernel.bin
KDEBUG = ./symbol-debug-kernel
KERNEL_DIR = ./kernel
KERNEL_SRC_DIR = $(KERNEL_DIR)/src
KERNEL_INC_DIR = $(KERNEL_DIR)/includes
KERNEL_OBJ_DIR = $(KERNEL_DIR)/obj

DRIVERS_DIR = ./drivers
DRIVERS_OBJ_DIR = $(DRIVERS_DIR)/obj

ASM_SRC = $(wildcard $(ASM_DIR)/*.asm)
BOOTLOADER_SRC = $(wildcard $(BOOTLOADER_DIR)/assembly/*.asm)
KERNEL_OBJ = $(wildcard $(KERNEL_OBJ)/*.o)
KERNEL_SRC = $(wildcard $(KERNEL_SRC_DIR)/*.c)
KERNEL_INC = $(wildcard $(KERNEL_INC_DIR)/*.h)
DRIVERS_SRC = $(wildcard $(DRIVERS_DIR)/*/src/*.c)
DRIVERS_INC = $(wildcard $(DRIVERS_DIR)/*/includes/*.h)

OBJ_K = $(KERNEL_SRC:.c=.o)
OBJ_D = $(DRIVERS_SRC:.c=.o)
OBJ_ASM_K = $(ASM_SRC:.asm=.o)

####### Qemu options #######


QEMU_CFG = -soundhw pcspk -no-reboot -no-shutdown -drive id=disk,file=disk.img,if=none
# gdb remote tcp:1234
QEMU_CFG_DEBUG = -d int -s -S $(QEMU_CFG) -D qemu_logs.txt

############################

all : run


$(EXEC) : assemble

debug : $(EXEC) $(KDEBUG)
	qemu-system-i386 $(QEMU_CFG_DEBUG) $<

run : $(EXEC)
	qemu-system-i386 $(QEMU_CFG) $<

disassemble : $(KERNEL)
	ndisasm -b 32 $? | cat

assemble : $(BOOTLOADER) $(KERNEL)
	cat $^ > $(EXEC)
	qemu-img resize $(EXEC) +20K

OBJDUMP : $(KERNEL_ENTRY) $(OBJ_D) $(OBJ_K) $(OBJ_ASM_K) $(INITRD)
	$(CC) -T dscript.ld -o $@ $^ $(LFLAGS)

#Kernel build and drivers

$(KERNEL) : $(KERNEL_ENTRY) $(OBJ_D) $(OBJ_K) $(OBJ_ASM_K) $(INITRD)
	$(CC) -T rscript.ld -o $@ $^ $(LFLAGS)

$(KDEBUG) : $(KERNEL_ENTRY) $(OBJ_D) $(OBJ_K) $(OBJ_ASM_K) $(INITRD)
	$(CC) -T dscript.ld -o $@ $^ $(LFLAGS)

%.o : %.c $(KERNEL_INC) $(DRIVERS_INC)
	$(CC) $(CFLAGS) -c -g $< -o $@

%.o : %.asm
	nasm -f elf32 -F dwarf -g $< -o $@

#Bootloader build
KERNEL_ENTRY : $(KERNEL_ENTRY)

BOOTLOADER : $(BOOTLOADER)

$(KERNEL_ENTRY):
	nasm -f elf32 -F dwarf -g $(KERNEL_ENTRY_FILE) -o $@

$(BOOTLOADER) :
	nasm $(BOOTLOADER_DIR)/assembly/boot.asm -i $(BOOTLOADER_DIR)/assembly -f bin -o $@


#Init ram disk creation
$(INITRD):
	 ./fs_gen/compile.sh


#Clean up
remove_obj :
	find . -type f -name "*.o" -delete

remove_kernel :
	rm $(KERNEL_BIN)

remove_bootloader :
	rm $(BOOTLOADER)

remove_exec :
	rm $(EXEC)


clean :
	rm -f $(KERNEL)
	rm -f $(KDEBUG)
	rm -f $(BOOTLOADER)
	rm -f $(EXEC)
	rm -f OBJDUMP
	find . -type f -name "*.o" -delete