create two binaries, one for booting from floppy, the other from scsi disk

second/Makefile

@@ -4,8 +4,11 @@
 # 
 #
 
+TOP		= $(shell pwd)
+VPATH		= $(TOP)
 #CPPFLAGS	= -DVERSION="\"$(VERSION)\""
-CPPFLAGS	= -DVERSION="\"$(VERSION)\"" -DBANK_DUMP
+CPPFLAGS	= -DVERSION="\"$(VERSION)\"" -DBANK_DUMP -I$(TOP) -Wa,-I$(TOP) \
+		  $(OPTFLAGS)
 CFLAGS		= -Wno-multichar -O -m68030 -nostdlib -nodefaultlibs -Wall -Werror -fpic
 ASFLAGS		= 
 LS		= ls
@@ -14,17 +17,37 @@ AWK		= awk
 OBJS	= head.o MMU030_asm.o MMU040_asm.o main.o console.o printf.o \
 	  font_8x16.o memory.o uncompress.o MMU030.o MMU040.o bootinfo.o \
 	  misc.o glue.o enter_kernel030.o enter_kernel040.o bank.o arch.o \
-	  load.o serial.o vga.o
+	  load.o serial.o vga.o $(OPTOBJS)
+
+OBJS_SCSI = scsi.o
+
+all: second_floppy second_scsi
 
 second: second.o
 	$(OBJCOPY) -j .text -j .data -j .rodata -j .got \
 			-O binary second.o second
 
-second.o: $(OBJS) ld.script
-	$(LD) -T ld.script -o second.o $(OBJS)
+second_floppy::
+	test -d floppy || mkdir floppy
+	cd floppy && make -f $(TOP)/Makefile second VERSION=$(VERSION) \
+			     TOP=$(TOP) OBJCOPY=$(OBJCOPY) LD=$(LD) CC=$(CC) \
+			     AS=$(AS) SIGNATURE="$(SIGNATURE)" \
+			     OPTFLAGS=-DSCSI_SUPPORT  OPTOBJS="$(OBJS_SCSI)"
+	mv floppy/second second_floppy
+
+second_scsi::
+	test -d scsi || mkdir scsi
+	cd scsi && make -f $(TOP)/Makefile second VERSION=$(VERSION) \
+			   TOP=$(TOP) OPTFLAGS=-DSCSI_SUPPORT \
+			   OBJCOPY=$(OBJCOPY) LD=$(LD) CC=$(CC) AS=$(AS) \
+			   SIGNATURE="$(SIGNATURE)" OPTOBJS="$(OBJS_SCSI)"
+	mv scsi/second second_scsi
+
+second.o: $(OBJS) $(TOP)/ld.script
+	$(LD) -T $(TOP)/ld.script -o second.o $(OBJS)
 
 .c.o:
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $^ 
 
 clean:
-	rm -f second *.o
+	rm -f second floppy/*.o scsi/*.o