Revert "Delete Makefile"

This reverts commit 4dd94f2a

minimalOS/Makefile

+# Author: UWE
+# Desc: Makefile to build Minimal Operating System
+# Goal: Provide students with the bare minimum to 
+#       boot first OS
+
+OSNAME=minimal.bin
+CDROM=minimal.iso
+
+AS=i686-elf-as
+CC=i686-elf-gcc
+CFLAGS=-ffreestanding -O2 -std=gnu99 -Wall -Wextra 
+LFLAGS=-ffreestanding -O2 -nostdlib -lgcc
+
+OBJS= boot.o kernel.o
+
+%.o : %.s 
+	$(AS) -o $@ $<
+
+%.o : %.c 
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+$(CDROM) : $(OSNAME) grub.cfg
+	cp $(OSNAME) isodir/boot/$(OSNAME)
+	cp grub.cfg isodir/boot/grub
+	grub-mkrescue -o $@ isodir
+
+$(OSNAME) : $(OBJS)
+	$(CC) -T linker.ld -o $@ $(LFLAGS) $^
+
+
+.PHONY: clean
+
+clean :
+	rm isodir/boot/$(OSNAME)
+	rm isodir/boot/grub/grub.cfg
+	rm *.o
+	rm $(OSNAME)
+	rm $(CDROM)