#--------------------------------------------------------------
#
# We need to run "make menuconfig" to get users options
# and then we run make to create a distribution
#
#--------------------------------------------------------------
TOPDIR=./
CONFIG_CONFIG_IN = Config.in
CONFIG_DEFCONFIG = .defconfig
CONFIG = config
PADS_CONFIG ?= .config

export ARCH=powerpc
export CROSS_COMPILE=ppc_4xxFP-

# Pull in the user's configuration file
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(TOPDIR)$(PADS_CONFIG)
endif

TAR_OPTIONS=$(subst ",, $(PADS_TAR_OPTIONS)) -xf
#"

ifeq ($(strip $(PADS_HAVE_DOT_CONFIG)),y)

TARGETS:=""
include package/Makefile.in

#############################################################
#
# You should probably leave this stuff alone unless you know
# what you are doing.
#
#############################################################

all: world

#In this section, we neeed .config
include .config.cmd

# We explicitly specify the build order of the first targets,
# otherwise with 'include package/*/*.mk' they all end up in
# alphabetical order.  The alternative is to use explicit dependencies
# to define the build order, for example have the asterisk target
# depend on linux.

TARGETS+=toolchain linux skeleton busybox
export PADS_VERSION=2.0.6-15

# We also need the various per-package makefiles which we add to TARGETS
include package/*/*.mk

target_debug: 
	@echo "TARGETS=$(TARGETS)"

TARGETS_CLEAN:=$(patsubst %,%-clean, $(TARGETS))
TARGETS_SOURCE:=$(patsubst %,%-source, $(TARGETS))
TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))
TARGETS_IMAGE:=$(patsubst %,%-image,$(TARGETS))

#############################################################################
# Custom Path
#############################################################################
TOOLS_BIN=$(BASE_DIR)/toolchain/usr/bin
PATH:= /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
PATH:= $(PATH):$(TOOLS_BIN)

world: prebuild clean_version_info $(DL_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
	$(PERSISTENT_STORAGE) $(PERSISTENT1_STORAGE) $(PERSISTENT2_STORAGE) \
	set_version_info $(TARGETS) 

.PHONY: all world clean dirclean distclean source clean_version_info set_version_info \
	$(TARGETS) $(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) \
	$(TARGETS_IMAGE) $(DL_DIR) $(BUILD_DIR) $(TOOL_BUILD_DIR) $(STAGING_DIR)

#############################################################
#
# staging and target directories do NOT list these as
# dependancies anywhere else
#
#############################################################
$(DL_DIR):
	@mkdir -p $(DL_DIR)

$(BUILD_DIR):
	@mkdir -p $(BUILD_DIR)

$(TOOL_BUILD_DIR):
	@mkdir -p $(TOOL_BUILD_DIR)

$(STAGING_DIR):
	@mkdir -p $(STAGING_DIR)/lib
	@mkdir -p $(STAGING_DIR)/include
	@mkdir -p $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)

$(TARGET_DIR):
	mkdir -p $(TARGET_DIR)

$(PERSISTENT_STORAGE):
	mkdir -p $(PERSISTENT_STORAGE)

$(PERSISTENT1_STORAGE):
	mkdir -p $(PERSISTENT1_STORAGE)

$(PERSISTENT2_STORAGE):
	mkdir -p $(PERSISTENT2_STORAGE)

clean_version_info:
	@rm -f $(PERSISTENT_STORAGE)/version_info.txt

set_version_info:
	@date > $(PERSISTENT_STORAGE)/version_info.txt
	@echo "PADS version " $(PADS_VERSION) >> $(PERSISTENT_STORAGE)/version_info.txt


.PHONY: image
ROOTFS_SIZE=130000

image: $(TARGETS_IMAGE)
	@if [ -n "`ls $(TARGET_DIR)/persistent/* 2>/dev/null`" ]; then \
		rm -f .persistent_moved_to_flash; \
		utils/persistent_to_flash.sh; \
		touch .persistent_moved_to_flash; \
	fi
	mkfs.jffs2 -n -b -p -r build_warp/persistent -e 131072 -o images/image.jffs2
	@if [ -n "`ls build_warp/persistent1/* 2>/dev/null`" ]; then \
		mkfs.jffs2 -n -b -p -r build_warp/persistent1 -e 131072 -o images/image1.jffs2; \
	fi 
	@if [ -n "`ls build_warp/persistent2/* 2>/dev/null`" ]; then \
		mkfs.jffs2 -n -b -p -r build_warp/persistent2 -e 131072 -o images/image2.jffs2; \
	fi 
	genext2fs -U \
        -d build_warp/root \
        -b $(ROOTFS_SIZE) \
	-i 2048 \
        images/rootfs.img
	@gzip -v9 images/rootfs.img
	mkimage -T ramdisk -C gzip -n 'PIKA Warp $(PADS_VERSION)' \
	-d images/rootfs.img.gz images/uRamdisk
	@rm images/rootfs.img.gz
	@if [ -f .persistent_moved_to_flash ]; then \
		utils/persistent_to_nfs.sh; \
		rm -f .persistent_moved_to_flash; \
	fi
	@gcc -O3 -Wall utils/padit.c -o utils/padit
	@if test -f images/cuImage.warp; \
	then cp -f images/cuImage.warp images/cuImage.warp.tmp; \
	utils/padit images/cuImage.warp.tmp images/cuImage.warp; \
	fi
	@cp -f images/uRamdisk images/uRamdisk.tmp
	@utils/padit images/uRamdisk.tmp images/uRamdisk
	@rm -f images/*.tmp
	@if [ `stat -c %s images/uRamdisk` -gt 50331648 ]; then \
		echo; \
		echo "WARNING!!!! Ramdisk image is too large and will not boot."; \
		echo "Size must be less than 48M"; \
	fi

###########################################################
#
# Cleanup
#
##########################################################
clean: $(TARGETS_CLEAN)

dirclean: $(TARGETS_DIRCLEAN)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE_DIR) $(PERSISTENT_STORAGE) \
		$(PERSISTENT1_STORAGE) $(PERSISTENT2_STORAGE)

else # ifeq ($(strip $(PADS_HAVE_DOT_CONFIG)),y)


#########################################################
#
# Configuration
#
#########################################################

all: menuconfig

endif # ifeq ($(strip $(PADS_HAVE_DOT_CONFIG)),y)

$(CONFIG)/conf:
	$(MAKE) -C $(CONFIG) conf

$(CONFIG)/mconf:
	$(MAKE) -C $(CONFIG) ncurses conf mconf

# If a file named prebuild is present, execute it. This file
# is intended for user-specific steps. If steps should only
# be executed once, the user script should include steps to 
# touch a file and then check for its existence before executing.
prebuild:
	@if [ -f prebuild_steps.sh ]; then \
		echo; \
		if [ -x prebuild_steps.sh ]; then \
			echo "Executing prebuild steps."; \
			./prebuild_steps.sh; \
			echo; \
		else \
			echo "prebuild_steps.sh is not executable"; \
			echo; \
			exit 1; \
		fi \
	fi
	
menuconfig: $(CONFIG)/mconf prebuild
	@utils/include_extra_packages.sh
	@$(CONFIG)/mconf $(CONFIG_CONFIG_IN)
	@if [ -f .config ]; then \
		ln -sf .config pads_config; \
	fi

defconfig: $(CONFIG)/conf prebuild
	@utils/include_extra_packages.sh
	@ln -sf pads_defconfig .defconfig
	$(CONFIG)/conf -d $(CONFIG_CONFIG_IN)
	@ln -sf .config pads_config

oldconfig: $(CONFIG)/conf prebuild
	@utils/include_extra_packages.sh
	@$(CONFIG)/conf -o $(CONFIG_CONFIG_IN)
	@ln -sf .config pads_config