KERNEL_VERSION:=$(shell [ -f mkkernel.sh ] && sed -n -e 's/^default_version=//p' mkkernel.sh)
KERNEL_DIR:=/project/fli4l/kernel
REPO:=$(shell pwd)/../../..
FLI4L_VER_FILE:=$(REPO)/base/version.txt
ifeq ($(FLI4L_VER),)
FLI4L_VER:=$(shell if [ -f $(FLI4L_VER_FILE) ]; then cat $(FLI4L_VER_FILE); fi)
endif

PATH:=$(REPO)/toolchain:$(PATH)
export PATH

# MKKERNEL:=sh mkkernel.sh -t $(KERNEL_DIR)/
MKKERNEL:=sh mkkernel.sh -t $(KERNEL_DIR)/
UPDATE:=update-kernel-svn.sh -c $(REPO) 
CHECK:=check-kernel.sh -c $(REPO) 

ifneq (,$(findstring local,$(MAKECMDGOALS)))
	MK_LOC:=
	CHK_LOC:=out-$(KERNEL_VERSION)
else
	MK_LOC:=-d $(KERNEL_DIR) -i $(KERNEL_DIR)/$(FLI4L_VER)-$(KERNEL_VERSION)
	CHK_LOC:=$(KERNEL_DIR)/$(FLI4L_VER)-$(KERNEL_VERSION)
endif

all:	kernel smp-kernel

kernel: check_version
	$(MKKERNEL) $(MK_LOC) $(MKKERNEL_OPT) -all >kernel.log 2>&1

smp-kernel: check_version
	 $(MKKERNEL) $(MK_LOC)-smp -f smp $(MKKERNEL_OPT) -all >smp-kernel.log 2>&1

check: check-kernel check-smp-kernel

check-kernel: check_repo
	$(CHECK) -k $(CHK_LOC)

check-smp-kernel: check_repo
	$(CHECK) -k $(CHK_LOC)-smp

update: update-kernel update-smp-kernel

update-kernel: check_repo
	$(UPDATE) -k $(CHK_LOC) -s update-kernel.sh $(FORCE)

update-smp-kernel: check_repo
	$(UPDATE) -k $(CHK_LOC)-smp -s update-smp-kernel $(FORCE)

check_version:
	@if [ ! "$(FLI4L_VER)" ]; then					\
		echo "invalid fli4l version, specify one in FLI4L_VER";	\
		false;							\
	else								\
		true;							\
	fi
	
check_repo: check_version
	@if [ ! -f $(REPO)/files.txt ]; then 				\
		echo "invalid fli4l repository in REPO='$(REPO)'" ; 	\
		false ; 						\
	else								\
		true ; 							\
	fi

version:
	@echo "Building kernel version $(KERNEL_VERSION)"
help:
	@cat Makefile.help

local:
	@echo "building local kernel"

.PHONY: local