####################
    # FoolOS Build Sys #
    ####################

.PHONY: all new run newrun stick clean tags mount umount

############ compiler ############

GIT_REVISION=$(shell git rev-parse HEAD)

#use our cross compiler
CC=i686-foolos-gcc
AS=i686-foolos-as

#sorry just this
CC=i686-elf-gcc
AS=i686-elf-as

############ compiler flags ############

CFLAGS=
CFLAGS=-DGIT_REVISION=\"$(GIT_REVISION)\"
CFLAGS+=-ffreestanding # do we need this if using own compiler?
CFLAGS+=-nostdlib
CFLAGS+=-O0
CFLAGS+=-I.
CFLAGS+=-I/home/miguel/temp/foolos/usr/i686-foolos/include/
CFLAGS+=-gstabs

#CFLAGS+=-fstack-protector-all
#CFLAGS+=-fno-zero-initialized-in-bss
#CFLAGS+=-fdata-sections -ffunction-sections

#CFLAGS+= -w # disable all warnings
#CFLAGS+= -Wimplicit-function-declaration
#CFLAGS+= -Wextra 
#CFLAGS+= -Wall
#CFLAGS+= -Werror
#CFLAGS+= -Werror=implicit-function-declaration
CFLAGS+= -Wno-int-conversion
CFLAGS+= -Wno-incompatible-pointer-types

######## linker flags ####################
LDFLAGS=
LDLIBS+=-lgcc

########## assembler flags #################
ASFLAGS=
ASFLAGS+=-gstabs

########## verbosity ##################3
V = 0
#CC = @echo "Compiling (i686-elf-gcc) $<..."; i686-elf-gcc
AS = @echo "Assembling (i686-elf-as) $<..."; i686-elf-as
#CC_1 = $(CCC)
#CC = $(CC_$(V))

############ source and object files and their deps ############

#kernel sources (asm and c)
SOURCES=
SOURCES+=$(wildcard ./kernel/*.c)
SOURCES+=$(wildcard ./fs/*.c)
SOURCES+=$(wildcard ./driver/*.c)
SOURCES+=$(wildcard ./terminal/*.c)
SOURCES+=$(wildcard ./lib/*/*.c)

#derive kernel object files
OBJECTS=$(patsubst %.c, %.o, $(SOURCES))

#derive deps
DEPS=$(patsubst %.c, %.d, $(SOURCES))

####### ASM STUFF #####

ASM_SOURCES=$(wildcard ./asm/*.asm)
ASM_OBJECTS=$(patsubst %.asm, %.o, $(ASM_SOURCES))
ASM_MULTIBOOT=$(wildcard ./asm/*.s)
ASM_MULTIBOOT_OBJ=$(patsubst %.s, %.o, $(ASM_MULTIBOOT))

#### BINARIES AND SUBMODULES ########

FOOLOS_ISO=FoolOS.iso
KERNEL_IMG=foolos.img
BIN_KERNEL=kernel.bin
BIN_MBR=./boot1/mbr.bin
BIN_STAGE2=./boot2/stage2.bin
BIN_MP=./boot2/mp.bin
BIN_FOOLFONT=./font/binfont.bin
SUBDIRS=userspace
IMG_FILLUP=fill.img
IMG_USERSPACE=./userspace/ext2.img

############ Final Targets ############

all: tags $(FOOLOS_ISO) #$(FOOLOS) # tags # $(FOOLOS_VDI)
new: clean all
newrun: clean run

run: run-qemu
debug: run-qemu-debug

########## INCLUDES ###################

include Makefile.common
-include $(DEPS)


######### RECURSIVE MAKES ########################

CLEANDIRS=$(SUBDIRS:%=clean-%)

.PHONY: $(SUBDIRS) $(CLEANDIRS)

$(SUBDIRS):
	@echo "-- Recursing make to [$@]..."; $(MAKE) --no-print-directory -C $@ 
	@echo "-- Returned from [$@]"

$(CLEANDIRS):
	@echo "-- Recursing clean to [$(@:clean-%=%)]..."; $(MAKE) --no-print-directory -C $(@:clean-%=%) clean
	@echo "-- Returned from [$(@:clean-%=%)]"

############ linking kernel binary ############

$(KERNEL_IMG): $(ASM_MULTIBOOT_OBJ) $(ASM_OBJECTS) $(OBJECTS) 
	$(CC) $(CFLAGS) $(LDFLAGS) -T linker.ld -o $@ $^ $(LDLIBS)

############ assembling of final image ############

# master boot record, kernel binary and fool-font 
#
#$(FOOLOS): $(KERNEL_IMG) $(SUBDIRS)
#	sudo cp $(KERNEL_IMG) /mnt/vdi/boot
#	sudo cp $(IMG_USERSPACE) /mnt/vdi/boot
#	sync

############ virtual machines stuff ############

# vdi image for VirtualBox
#$(FOOLOS_VDI): disk.img
#	-rm FoolOS.vdi
#	#VBoxManage convertfromraw $< $@  --uuid 2f11ca11-c35d-4240-b77e-79e37d32616c 
#	VBoxManage convertfromraw disk.img $@  --uuid 2f11ca11-c35d-4240-b77e-79e37d32616c 

# run in our local bochs (we need cirrus support for our vesa mode)
#run-bochs: all
#	~/opt/bochs-2.6.8/bin/bochs -q -f bochs/bochsrc  -rc bochs/bochsdebug 

# run in qemu
run-qemu: all
	#qemu-system-i386 -enable-kvm disk.img -smp 4 -s 
	#qemu-system-i386 -enable-kvm -s -kernel foolos.img -smp 4 -initrd userspace/ext2.img  
	echo XDOTOOL HACK...&& 	sleep 0.2 && xdotool search --name "QEMU" windowsize 100 100 && echo XDOTOOL HACK END. &
	qemu-system-i386 -enable-kvm $(FOOLOS_ISO) -smp 4 -serial stdio

run-qemu-debug: all
#	qemu -enable-kvm -s -S ~/temp/FoolOs/disk.img
#	qemu -enable-kvm -s -singlestep disk.img 
#	qemu-system-i386 -enable-kvm -s -S -kernel foolos.img -smp 4 -initrd userspace/ext2.img  
	echo XDOTOOL HACK...&& 	sleep 0.2 && xdotool search --name "QEMU" windowsize 100 100 && echo XDOTOOL HACK END. &
	qemu-system-i386 -s -S $(FOOLOS_ISO) -smp 4  -serial stdio #-enable-kvm -smp 1
monitor:
	echo XDOTOOL HACK...&& 	sleep 0.2 && xdotool search --name "QEMU" windowsize 100 100 && echo XDOTOOL HACK END. &
	qemu-system-i386 -s -S $(FOOLOS_ISO) -smp 4  -monitor stdio # -serial stdio #-enable-kvm -smp 1

stop-qemu:
	killall qemu-system-i386


############ create bootable usb image ############

#stick:  $(FOOLOS)
#	cat $< > $(USB_STICK) && sync
#	xxd $(USB_STICK)  | head -n 50

############ cleanup ############

clean: $(CLEANDIRS)
	@echo "Cleaning..."; rm -f *.bin $(FOOLOS) $(FOOLOS_ISO) $(FOOLOS_VDI) $(KERNEL_ENTRY) $(ASM_MULTIBOOT_OBJ) $(KERNEL_IMG) $(ASM_OBJECTS) $(OBJECTS) $(IMG_FILLUP) $(BIN_MBR) $(BIN_MP) $(BIN_STAGE2) $(DEPS) bochs.out bochs.log ne2k-tx.log ne2k-txdump.txt  tags  grubiso/boot/foolos.bin grubiso/boot/ext2.img
	@echo "Cleaning Documentation..."; rm -f ./doc/ -r

tags:
	@echo "Generating ctags..."; ctags --recurse=yes .

############ mounting #############

#mount: disk.img
#	echo "* mounting disk image"
#	sudo losetup /dev/loop1 $< -o 1048576
#	sudo mount /dev/loop1 /mnt/vdi

#umount:
#	echo "* unmounting disk image"
#	sudo umount /mnt/vdi
#	sudo losetup -d /dev/loop1

##### ISO #####

$(FOOLOS_ISO): $(KERNEL_IMG) userspace
	@echo "------------------------"
	@echo "Create ISO..."
	@cp $(KERNEL_IMG) grubiso/boot/foolos.bin
	@cp $(IMG_USERSPACE) grubiso/boot
	@grub-mkrescue -o $(FOOLOS_ISO) grubiso/
	@echo "Finished ISO"
	@echo "------------------------"

#### README ###

gitweb_readme:
	markdown README.md | ssh git readme miguel/fool-os set

### DOC ###
doxygen: clean
	doxygen doxy.cfg