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# MIT License, Copyright (c) 2020 Marvin Borner
COBJS_KERNEL = src/main.o \
src/drivers/vesa.o \
src/drivers/cpu.o \
src/drivers/serial.o \
src/drivers/interrupts.o \
src/drivers/interrupts_asm.o \
src/drivers/keyboard.o \
src/drivers/ide.o \
src/drivers/timer.o \
src/features/fs.o \
src/features/psf.o \
src/features/gui.o \
src/features/elf.o \
src/lib/str.o \
src/lib/mem.o \
src/lib/math.o \
src/lib/conv.o \
src/lib/print.o
COBJS_APPS = apps/test.o
CC = ccache cross/opt/bin/i686-elf-gcc
LD = ccache cross/opt/bin/i686-elf-ld
AS = ccache nasm
# Flags to make the binary smaller TODO: Remove after indirect pointer support!
CSFLAGS = -mpreferred-stack-boundary=2 -fno-asynchronous-unwind-tables -Os
# TODO: Use lib as external library
CFLAGS = $(CSFLAGS) -Wall -Wextra -nostdlib -nostdinc -ffreestanding -fno-builtin -fno-pic -mgeneral-regs-only -std=c99 -m32 -pedantic-errors -Isrc/lib/inc/ -Isrc/inc/
ASFLAGS = -f elf32 -O3
all: compile clean
%.o: %.c
@$(CC) -c $(CFLAGS) $< -o $@
%_asm.o: %.asm
@$(AS) $(ASFLAGS) $< -o $@
kernel: $(COBJS_KERNEL)
apps: $(COBJS_APPS)
compile: kernel apps
@mkdir -p build/
@$(AS) -f bin src/entry.asm -o build/boot.bin
@$(LD) -N -emain -Ttext 0x00050000 -o build/kernel.bin $(COBJS_KERNEL) --oformat binary
@$(CC) $(CFLAGS) -o build/debug.o $(COBJS_KERNEL)
@$(LD) -N -emain -Tapps/link.ld -o build/test apps/test.o
clean:
@find src/ apps/ -name "*.o" -type f -delete
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