# If no .config on main folder i have to create one
NONE := $(shell touch .config)
include .config

TOP_DIR         := $(CURDIR)
PATHS           :=

CONFIG_PATH     := $(CURDIR)
CONFIG_FILE     := .config
CONFIG          := $(CONFIG_PATH)/$(CONFIG_FILE)
DEPLOY_FOLDER	:= deploy
DEPLOY          := $(CONFIG_PATH)/$(DEPLOY_FOLDER)
HANDOUT_FOLDER	:= handouts
HANDOUT		:=$(DEPLOY)/$(HANDOUT_FOLDER)
CONFIG_FOLDER	:= configs

BUILD_COMMAND   := xelatex
BUILD_COMMAND_BIB := bibtex
BUILD_DEBUG	:= -halt-on-error --interaction=errorstopmode
BUILD_ARGS      :=
BUILD           := $(BUILD_COMMAND) $(BUILD_DEBUG) $(BUILD_ARGS)
BUILD_BIB	:= $(BUILD_COMMAND_BIB)

KCONFIG_PATH	:= ./kconfig-frontends/frontends
KCONFIG 	:= $(KCONFIG_PATH)/conf/conf
KMCONFIG	:= $(KCONFIG_PATH)/mconf/mconf

MASTER_PRES	:= tmp_master_pres
MASTER_HANDOUT	:= tmp_master_handout
MASTER_END	:= .tex

HANDOUT_PREFIX	:= handout_
PRES_PREFIX	:= pres_

# Folder that should not include to build paths
EXCLUDE_PATH := \
	grep -v ./kconfig-frontends |  \
	grep -v ./.git | \
	grep -v ./kernel-devel/module-basics/vain | \
	grep -v ./kernel-devel/module-basics/vain_pci | \
	grep -v ./kernel-devel/module-basics/vain_plat | \
	grep -v ./examples

# Search for all folders with Makfile
MAKE_FILES = $(shell find . -mindepth 2 -name Makefile | $(EXCLUDE_PATH))
PATHS = $(dir $(MAKE_FILES))

export

build:
	mkdir -p $(HANDOUT)
	for dir in $(PATHS) ; do \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk $@ >> log.txt); \
	done
ifdef CONFIG_BUILD_MASTER_PRES
	($(MAKE) -C ./ -f Makefile build_master_pres  >> log.txt);
endif
ifdef CONFIG_BUILD_MASTER_HANDOUT
	($(MAKE) -C ./ -f Makefile build_master_handout  >> log.txt);
endif

$(KMCONFIG):
	cd kconfig-frontends/ && ./configure && make
	
$(KCONFIG):
	cd kconfig-frontends/ && ./configure && make

menuconfig: $(KMCONFIG)
	$(KMCONFIG)  Kconfig

config: $(KCONFIG)
	$(KCONFIG) --oldaskconfig Kconfig

oldconfig: $(KCONFIG)
	cp $@ $(CONFIG_FILE)
	$(KCONFIG) --oldconfig Kconfig

clean:
	@echo "Cleaning"
	rm -rf $(DEPLOY_FOLDER)
	find -name "tmp*" -exec rm -f {} \;
	for dir in $(PATHS) ; do \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk $@  >> log.txt); \
	done

mrproper distclean:
	@echo "distclean"
	rm -f $(CONFIG_FILE)
	rm -f $(CONFIG_FILE).old
	rm -rf $(DEPLOY_FOLDER)
	find -name "tmp*" -exec rm -f {} \;
	for dir in $(PATHS) ; do \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk clean  >> log.txt); \
	done

build_master_pres: clean_master_pres
	@echo "Build masterpres with: "$(obj-y)
	for dir in $(PATHS) ; do \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk build_master_pres  >> log.txt); \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk build_master_pres_end  >> log.txt); \
	done

clean_master_pres:
ifneq ($(shell find . -name $(MASTER_PRES)*$(MASTER_END)), )
	find . -name $(MASTER_PRES)*$(MASTER_END) -exec rm {} \;
endif

build_master_handout: clean_master_handout
	@echo "Build master handout with: "$(obj-handout-y)
	for dir in $(PATHS) ; do \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk build_master_handout  >> log.txt); \
		($(MAKE) -C $$dir -f $(CURDIR)/modules.mk build_master_handout_end  >> log.txt); \
	done

clean_master_handout:
ifneq ($(shell find . -name $(MASTER_HANDOUT)*$(MASTER_END)), )
	find . -name $(MASTER_HANDOUT)*$(MASTER_END) -exec rm {} \;
endif

%_defconfig: $(KCONFIG)
	cp $(CONFIG_FOLDER)/$@ $(CONFIG_FILE)
	$(KCONFIG) --oldconfig Kconfig

.PHONY: config oldconfig menuconfig build clean mrproper distclean clean_master_pres build_master_handout