ARCH ?= $(shell uname -m)

CC              = zig cc -target $(ARCH)-freestanding
LD              = ld -m elf_$(ARCH)

-include make.$(ARCH).config

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


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       := $(patsubst src/%.c,obj/%.o,$(CFILES) $(ARCHFILES))

.PHONY: all clean obj

all: $(TARGET)

$(TARGET): $(OBJ)
	$(LD) $(LDFLAGS) $(OBJ) -o $@

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

clean:
	rm -rf $(TARGET) obj zig-cache