Export common paths

Makefile

@@ -1,21 +1,25 @@
 include config.mk
 
+export INCLUDE = $(shell pwd)/include
+export KERNEL  = $(shell pwd)/arch/kernel
+export LIBK    = $(shell pwd)/libk/libk.a
+
 run: run-iso
 
 all:     all-kernel   all-iso   all-libk   all-test
 clean: clean-kernel clean-iso clean-libk clean-test
 
 all-kernel: all-libk
-	make all -C arch I=$(shell pwd)/include LIBK=$(shell pwd)/libk/libk.a
+	make all -C arch
 
 clean-kernel:
 	make clean -C arch
 
 run-iso: all-kernel
-	make run -C iso K=$(shell pwd)/arch/kernel
+	make run -C iso
 
 all-iso: all-kernel
-	make all -C iso K=$(shell pwd)/arch/kernel
+	make all -C iso
 
 clean-iso:
 	make clean -C iso
@@ -27,7 +31,7 @@ clean-libk:
 	make clean -C libk
 
 test-libk: all-libk
-	make run -C test/libk I=$(shell pwd)/include LIBK=$(shell pwd)/libk/libk.a
+	make run -C test/libk
 
 clean-test:
 	make clean -C test/libk

arch/Makefile

@@ -30,7 +30,7 @@ kernel: $(OBJS)
 	grub-file --is-x86-multiboot2 $@
 
 %.c.o: %.c
-	$(CC) -c $< -o $@ -std=gnu99 -ffreestanding -nostdinc -fno-builtin -fno-stack-protector -Wall -Wextra -I "$(I)"
+	$(CC) -c $< -o $@ -std=gnu99 -ffreestanding -nostdinc -fno-builtin -fno-stack-protector -Wall -Wextra -I "$(INCLUDE)"
 
 %.s.o: %.s
 	$(AS) $< -o $@

iso/Makefile

@@ -2,8 +2,8 @@ run: all
 	qemu-system-i386 -cdrom image.iso
 
 all:
-	grub-file --is-x86-multiboot2 "$(K)"
-	cp "$(K)" rootfs/boot/kernelmq
+	grub-file --is-x86-multiboot2 "$(KERNEL)"
+	cp "$(KERNEL)" rootfs/boot/kernelmq
 	grub-mkrescue rootfs -o image.iso
 
 clean:

test/libk/Makefile

@@ -15,4 +15,4 @@ run-%.bin: %.bin
 	@./$< && echo "[ OK ] $*" || echo "[FAIL] $*"
 
 %.bin: %.c
-	$(CC) $< -o $@ $(CFLAGS) -I "$(I)" "$(LIBK)"
+	$(CC) $< -o $@ $(CFLAGS) -I "$(INCLUDE)" "$(LIBK)"