ARCHES = x86_64 i386 aarch64

ARCH ?= x86_64

CC              = zig cc -target $(ARCH)-freestanding
LD              = ld -m elf_$(ARCH)
LDSCRIPT        = make/$(ARCH)/linker.ld

-include make/$(ARCH)/make.config

CFLAGS          ?= -O2
CFLAGS          := $(CFLAGS) $(ARCH_CFLAGS) \
                   -Wall -Wextra -pedantic -Wno-language-extension-token -std=gnu11 -I../ext/limine/stivale -fPIE
LDFLAGS         := $(LDFLAGS) -T $(LDSCRIPT) 


TARGET := kernel

CFILES    := $(shell find src -path src/arch -prune -o -type f -name '*.c' -print)
ARCHFILES := $(shell find src/arch/$(ARCH) -type f -name '*.c' -print)
HFILES    := $(shell find src -type f -name '*.h')
OBJ       := $(patsubst src/%.c,obj/$(ARCH)/%.o,$(CFILES) $(ARCHFILES))

.PHONY: all clean obj dirs

all: bin/$(TARGET)-$(ARCH)

bin/$(TARGET)-$(ARCH): $(OBJ)
	mkdir -p bin
	$(LD) $(LDFLAGS) $(OBJ) -o $@

obj/$(ARCH)/%.o: src/%.c $(HFILES)
	@mkdir -p obj/$(ARCH)/arch/$(ARCH)
	$(CC) $(CFLAGS) -c $< -o $@

dirs:
	mkdir -p bin obj
	mkdir -p $(patsubst src/%,obj/%, $(shell find src -type d -print))

clean:
	rm -rf bin obj zig-cache