kernel/Makefile: learn about .asm and .S

1 files changed, 17 insertions, 6 deletions

diff --git a/kernel/Makefile b/kernel/Makefile
index 6c1b3ae..7250696 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -1,16 +1,27 @@
 all: kernel.elf
 
+OBJS=entry.o tty.o
+HEADERS=tty.h
+
+.SUFFIXES: .asm
+
 .c.o :
 	gcc -std=gnu99 -m32 -fno-builtin -ffreestanding -nostdlib -Wall -Wextra -c $< -o $@
 
-kernel.elf: kernel.o tty.o tty.h entry.o
-	ld -Tlinker.ld -melf_i386 entry.o tty.o kernel.o -o kernel.elf
+.S.o :
+	as -32 $< -o $@
+
+.asm.o :
+	nasm -felf32 $< -o $@
 
-# entry.o: entry.S
-# 	as -32 $< -o entry.o
+
+kernel.elf: kernel.o $(OBJS) $(HEADERS)
+	ld -Tlinker.ld -melf_i386 $(OBJS) kernel.o -o kernel.elf
 
 entry.o: entry.asm
-	nasm -f elf32 $<
+
+tty.o: tty.c tty.h
+
 
 clean:
-	rm -f *.o kernel.elf
+	rm -f kernel.elf *.o