ifndef KERNEL_DIR
  KERNEL_DIR = /usr/src/linux
endif

include $(KERNEL_DIR)/.config

ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e s/arm.*/arm/ -e s/sa110/arm/)
CPPFLAGS += -D__KERNEL__ -DMODULE -I$(KERNEL_DIR)/include -I./include
CFLAGS += -Wall -Wstrict-prototypes -O1
ifeq ($(ARCH), ppc)
CFLAGS += -msoft-float -ffixed-r2 -mmultiple -mstring
endif

ifdef ARM
  CROSS_COMPILE   = arm-linux-
  AS              = $(CROSS_COMPILE)as
  LD              = $(CROSS_COMPILE)ld
  CC              = $(CROSS_COMPILE)gcc
  AR              = $(CROSS_COMPILE)ar
  NM              = $(CROSS_COMPILE)nm
  STRIP           = $(CROSS_COMPILE)strip
  OBJCOPY         = $(CROSS_COMPILE)objcopy
  OBJDUMP         = $(CROSS_COMPILE)objdump
endif

OBJS = cbs.o  dispatch.o  hooks.o  init.o

ifdef PXA250
ARCH = pxa250
CFLAGS +=  -fomit-frame-pointer
OBJS += pxa250-power.o
endif

ifdef DEBUG
CPPFLAGS += -D__CBS_DEBUG__
endif

ifdef LOG
CPPFLAGS += -I$(LOG)/include -D__LOGGER__
endif

ifdef PROF
CPPFLAGS += -D__PROFILE__
endif

################### GRUB flags
ifdef GRUB
CPPFLAGS += -D__GRUB__
endif

ifdef GRUB_DEBUG
CPPFLAGS += -D__GRUB_DEBUG__
endif


ifdef GRUB_EXTRA_BANDWIDTH
CPPFLAGS += -D__GRUB_EXTRA_BANDWIDTH__
endif

ifdef GRUB_PWR
CPPFLAGS += -D__GRUB_PWR__
endif


################## End of GRUB flags

ifdef PRECISE_ALLOC
CPPFLAGS += -D__SLEEP__
endif


ifdef HRT
OBJS +=hrt.o
else
OBJS +=timers.o
endif

ifdef TRACE
OBJS +=trace.o
CPPFLAGS += -I$(TRACE)/include -D__CBS_TRACE__
endif

ifdef MULTI
CPPFLAGS += -D__MULTITASK__
endif

ifdef PROC
CPPFLAGS += -D__PROC_FS__
OBJS += cbs_proc_fs.o
endif

all: include/time.h cbs_sched.o

include/time.h: include/$(ARCH)-time.h
	ln -s $(ARCH)-time.h include/time.h

cbs_sched.o: $(OBJS)
	$(LD) -r $^ -o $@


load: all
	sudo rmmod cbs_sched; sudo insmod cbs_sched.o

unload: all
	sudo rmmod cbs_sched

clean:
	-rm -f *.o
	-rm -f include/time.h

timers.s: timers.c
	$(CC) $(CPPFLAGS) $(CFLAGS) -S timers.c