PATH := /opt/brcm/hndtools-mipsel-uclibc-3.2.3/bin:/opt/brcm/hndtools-mipsel-linux-3.2.3/bin:$(PATH)
export PATH

export TOOLCHAIN := /opt/brcm/hndtools-mipsel-uclibc-3.2.3

# #####################################################################

export BUILD := i386-pc-linux-gnu
export TARGET := mipsel-uclibc
export HOST := mipsel-linux

export CROSS_COMPILE := mipsel-uclibc-
export CONFIGURE := ./configure --target=$(TARGET) --build=$(BUILD) --host=$(HOST)

export CC := $(CROSS_COMPILE)gcc
export AR := $(CROSS_COMPILE)ar
export AS := $(CROSS_COMPILE)as
export LD := $(CROSS_COMPILE)ld
export LDD := $(CROSS_COMPILE)ldd
export NM := $(CROSS_COMPILE)nm
export RANLIB := $(CROSS_COMPILE)ranlib
export STRIP := $(CROSS_COMPILE)strip
export SIZE := $(CROSS_COMPILE)size

export WGET := /usr/bin/wget --passive-ftp -nd

_SRCBASE=$(shell /bin/pwd)
_CONFIGS=$(_SRCBASE)/configs
_DOWNLOAD_DIR=$(_SRCBASE)/download
_SOURCE=$(_SRCBASE)/source
_STATE=$(_SRCBASE)/state
_TOOLS=$(_SRCBASE)/tools

_STAGE1_SKEL=stage1.skel
_STAGE1=$(shell /bin/pwd)/stage1
_STAGE1_IMG=stage1.img
_STAGE2_SKEL=stage2.skel
_STAGE2=$(shell /bin/pwd)/stage2

# #####################################################################

# build firmware and filesystem
all: stage1 stage2

# stage1 (firmware)
_STAGE1_TARGETS=kernel-zImage busybox-stage1 cramfs tools

# stage2 (filesystem)
_STAGE2_TARGETS=kernel-modules busybox-stage2 strace bridge-utils iproute2 pppd

# fetch all needed sources
fetch: stage1-fetch stage2-fetch

# trigger rebuild of all packages
clean: stage1-clean stage2-clean

# remove all builddirs
distclean: stage1-distclean stage2-distclean

# #####################################################################
_BUILD_TOOLS=$(_TOOLS)

tools: tools-clean $(_STATE)/tools.all-done

tools-fetch:

$(_STATE)/tools.all-done:
	make -C $(_BUILD_TOOLS) all
	touch $(_STATE)/tools.all-done

tools-install: $(_STATE)/tools.all-done

tools-clean:
	rm -f $(_STATE)/tools.*

tools-distclean: tools-clean
	make -C $(_BUILD_TOOLS) clean

# #####################################################################
_PACKAGE_KERNEL=$(_DOWNLOAD_DIR)/linux-2.4.20.tar.bz2
_DOWNLOAD_KERNEL=ftp://ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.20.tar.bz2
_BUILD_KERNEL=$(_SOURCE)/linux-2.4.20
_KERNELHEADERS=$(_BUILD_KERNEL)/include

kernel: $(_STATE)/kernel-zImage.all-done $(_STATE)/kernel-modules.all-done

kernel-zImage: kernel-zImage-clean $(_STATE)/kernel-zImage.all-done
kernel-modules: kernel-modules-clean $(_STATE)/kernel-modules.all-done

kernel-zImage-fetch: $(_PACKAGE_KERNEL)
kernel-modules-fetch: $(_PACKAGE_KERNEL)

$(_PACKAGE_KERNEL):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_KERNEL)

$(_STATE)/kernel.unpacked: $(_PACKAGE_KERNEL)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_KERNEL)
	(cd $(_BUILD_KERNEL); bzcat $(_CONFIGS)/kernel-vanilla2siemens_small.patch.bz2 | patch -lp1 );
	(cd $(_BUILD_KERNEL); tar -xjf $(_CONFIGS)/wl-rel_3_01_05.tar.bz2 );
	touch $(_STATE)/kernel.unpacked

$(_STATE)/kernel.configured: $(_STATE)/kernel.unpacked
	cp $(_CONFIGS)/kernel-config $(_BUILD_KERNEL)/.config
	make -C $(_BUILD_KERNEL) oldconfig
	touch $(_STATE)/kernel.configured

$(_STATE)/kernel.dep: $(_STATE)/kernel.configured
	make -C $(_BUILD_KERNEL) dep
	touch $(_STATE)/kernel.dep

$(_STATE)/kernel-zImage.all-done: $(_STATE)/kernel.dep
	make -C $(_BUILD_KERNEL) zImage
	touch $(_STATE)/kernel-zImage.all-done

$(_STATE)/kernel-modules.all-done: $(_STATE)/kernel-zImage.all-done
	make -C $(_BUILD_KERNEL) modules
	touch $(_STATE)/kernel-modules.all-done

kernel-zImage-install: $(_STAGE1) $(_STATE)/kernel-zImage.all-done

kernel-modules-install: $(_STAGE2) $(_STATE)/kernel-modules.all-done
	make -C $(_BUILD_KERNEL) modules_install DEPMOD=/bin/true INSTALL_MOD_PATH=$(_STAGE2)
	rm -rf $(_STAGE2)/lib/modules/2.4.20/build
	rm -rf $(_STAGE2)/lib/modules/2.4.20/pcmcia

kernel-clean: kernel-zImage-clean kernel-modules-clean

kernel-distclean:
	rm -r $(_STATE)/kernel.*
	make -C $(_BUILD_KERNEL) mrproper

kernel-zImage-clean:
	rm -f $(_STATE)/kernel-zImage.all-done

kernel-zImage-distclean: kernel-distclean

kernel-modules-clean:
	rm -f $(_STATE)/kernel-modules.all-done

kernel-modules-distclean: kernel-distclean

# #####################################################################
_PACKAGE_CRAMFS=$(_DOWNLOAD_DIR)/cramfs-1.1.tar.gz
_DOWNLOAD_CRAMFS=http://mesh.dl.sourceforge.net/sourceforge/cramfs/cramfs-1.1.tar.gz
_BUILD_CRAMFS=$(_SOURCE)/cramfs-1.1

cramfs: cramfs-clean $(_STATE)/cramfs.all_done

cramfs-fetch: $(_PACKAGE_CRAMFS)

$(_PACKAGE_CRAMFS):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_CRAMFS)

$(_STATE)/cramfs.unpacked: $(_PACKAGE_CRAMFS)
	tar -C $(_SOURCE) -xzf $(_PACKAGE_CRAMFS)
	touch $(_STATE)/cramfs.unpacked

$(_STATE)/cramfs.all_done: $(_STATE)/cramfs.unpacked
	make -C $(_BUILD_CRAMFS) all
	touch $(_STATE)/cramfs.all_done

cramfs-install: $(_STATE)/cramfs.all_done

cramfs-clean:
	rm -f $(_STATE)/cramfs.*

cramfs-distclean: strace-clean
	rm -rf $(_BUILD_CRAMFS)

# #####################################################################
_PACKAGE_BUSYBOX=$(_DOWNLOAD_DIR)/busybox-1.00.tar.bz2
_DOWNLOAD_BUSYBOX=http://www.busybox.net/downloads/busybox-1.00.tar.bz2
_BUILD_BUSYBOX=$(_SOURCE)/busybox-1.00
_BUILD_BUSYBOX_STAGE1=$(_SOURCE)/busybox-stage1

busybox-stage1: busybox-stage1-clean $(_STATE)/busybox-stage1.all_done

busybox-stage1-fetch: $(_PACKAGE_BUSYBOX)

$(_PACKAGE_BUSYBOX):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_BUSYBOX)

$(_STATE)/busybox-stage1.unpacked: $(_PACKAGE_BUSYBOX)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_BUSYBOX)
	rm -rf $(_BUILD_BUSYBOX_STAGE1)
	mv $(_BUILD_BUSYBOX) $(_BUILD_BUSYBOX_STAGE1)
	touch $(_STATE)/busybox-stage1.unpacked

$(_STATE)/busybox-stage1.configured: $(_STATE)/busybox-stage1.unpacked
	cp $(_CONFIGS)/busybox-stage1.conf $(_BUILD_BUSYBOX_STAGE1)/.config
	touch $(_STATE)/busybox-stage1.configured

$(_STATE)/busybox-stage1.compiled: $(_STATE)/busybox-stage1.configured
	make -C $(_BUILD_BUSYBOX_STAGE1) all
	touch $(_STATE)/busybox-stage1.compiled

$(_STATE)/busybox-stage1.all_done: $(_STATE)/busybox-stage1.compiled
	make -C $(_BUILD_BUSYBOX_STAGE1) install
	chmod 4775 $(_BUILD_BUSYBOX_STAGE1)/_install/bin/busybox
	touch $(_STATE)/busybox-stage1.all_done

busybox-stage1-install: $(_STAGE1) $(_STATE)/busybox-stage1.all_done
	cp -r $(_BUILD_BUSYBOX_STAGE1)/_install/* $(_STAGE1)

busybox-stage1-clean:
	rm -f $(_STATE)/busybox-stage1.*

busybox-stage1-distclean: busybox-stage1-clean
	rm -rf $(_BUILD_BUSYBOX_STAGE1)

# #####################################################################
_BUILD_BUSYBOX_STAGE2=$(_SOURCE)/busybox-stage2

busybox-stage2: busybox-stage2-clean $(_STATE)/busybox-stage2.all_done

busybox-stage2-fetch: $(_PACKAGE_BUSYBOX)

$(_STATE)/busybox-stage2.unpacked: $(_PACKAGE_BUSYBOX)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_BUSYBOX)
	rm -rf $(_BUILD_BUSYBOX_STAGE2)
	mv $(_BUILD_BUSYBOX) $(_BUILD_BUSYBOX_STAGE2)
	touch $(_STATE)/busybox-stage2.unpacked

$(_STATE)/busybox-stage2.configured: $(_STATE)/busybox-stage2.unpacked
	cp $(_CONFIGS)/busybox-stage2.conf $(_BUILD_BUSYBOX_STAGE2)/.config
	touch $(_STATE)/busybox-stage2.configured

$(_STATE)/busybox-stage2.compiled: $(_STATE)/busybox-stage2.configured
	make -C $(_BUILD_BUSYBOX_STAGE2) all
	touch $(_STATE)/busybox-stage2.compiled

$(_STATE)/busybox-stage2.all_done: $(_STATE)/busybox-stage2.compiled
	make -C $(_BUILD_BUSYBOX_STAGE2) install
	chmod 4775 $(_BUILD_BUSYBOX_STAGE2)/_install/bin/busybox
	touch $(_STATE)/busybox-stage2.all_done

busybox-stage2-install: $(_STAGE2) $(_STATE)/busybox-stage2.all_done
	cp -r $(_BUILD_BUSYBOX_STAGE2)/_install/* $(_STAGE2)

busybox-stage2-clean:
	rm -f $(_STATE)/busybox-stage2.*

busybox-stage2-distclean: busybox-stage2-clean
	rm -rf $(_BUILD_BUSYBOX_STAGE2)

# #####################################################################
_PACKAGE_STRACE=$(_DOWNLOAD_DIR)/strace-4.5.7.tar.bz2
_DOWNLOAD_STRACE=http://mesh.dl.sourceforge.net/sourceforge/strace/strace-4.5.7.tar.bz2
_BUILD_STRACE=$(_SOURCE)/strace-4.5.7

strace: strace-clean $(_STATE)/strace.all_done

strace-fetch: $(_PACKAGE_STRACE)

$(_PACKAGE_STRACE):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_STRACE)

$(_STATE)/strace.unpacked: $(_PACKAGE_STRACE)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_STRACE)
	touch $(_STATE)/strace.unpacked

$(_STATE)/strace.configured: $(_STATE)/strace.unpacked
	(cd $(_BUILD_STRACE); $(CONFIGURE) --prefix=/usr );
	touch $(_STATE)/strace.configured

$(_STATE)/strace.compiled: $(_STATE)/strace.configured
	make -C $(_BUILD_STRACE) all
	touch $(_STATE)/strace.compiled

$(_STATE)/strace.all_done: $(_STATE)/strace.compiled
	$(STRIP) --strip-all $(_BUILD_STRACE)/strace
	touch $(_STATE)/strace.all_done

strace-install: $(_STAGE2) $(_STATE)/strace.all_done
	cp $(_BUILD_STRACE)/strace $(_STAGE2)/usr/bin

strace-clean:
	rm -f $(_STATE)/strace.*

strace-distclean: strace-clean
	rm -rf $(_BUILD_STRACE)

# #####################################################################
_PACKAGE_BRIDGE_UTILS=$(_DOWNLOAD_DIR)/bridge-utils-1.0.4.tar.gz
_DOWNLOAD_BRIDGE_UTILS=http://mesh.dl.sourceforge.net/sourceforge/bridge/bridge-utils-1.0.4.tar.gz
_BUILD_BRIDGE_UTILS=$(_SOURCE)/bridge-utils-1.0.4

bridge-utils: bridge-utils-clean $(_STATE)/bridge-utils.all_done

bridge-utils-fetch: $(_PACKAGE_BRIDGE_UTILS)

$(_PACKAGE_BRIDGE_UTILS):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_BRIDGE_UTILS)

$(_STATE)/bridge-utils.unpacked: $(_PACKAGE_BRIDGE_UTILS)
	tar -C $(_SOURCE) -xzf $(_PACKAGE_BRIDGE_UTILS)
	touch $(_STATE)/bridge-utils.unpacked

$(_STATE)/bridge-utils.configured: $(_STATE)/bridge-utils.unpacked
	(cd $(_BUILD_BRIDGE_UTILS); $(CONFIGURE) --prefix=/usr --with-linux-headers=$(_KERNELHEADERS));
	touch $(_STATE)/bridge-utils.configured

$(_STATE)/bridge-utils.compiled: $(_STATE)/bridge-utils.configured
	make -C $(_BUILD_BRIDGE_UTILS) all
	touch $(_STATE)/bridge-utils.compiled

$(_STATE)/bridge-utils.all_done: $(_STATE)/bridge-utils.compiled
	$(STRIP) --strip-all $(_BUILD_BRIDGE_UTILS)/brctl/brctl
	touch $(_STATE)/bridge-utils.all_done

bridge-utils-install: $(_STAGE2) $(_STATE)/bridge-utils.all_done
	cp $(_BUILD_BRIDGE_UTILS)/brctl/brctl $(_STAGE2)/usr/sbin

bridge-utils-clean:
	rm -f $(_STATE)/bridge-utils.*

bridge-utils-distclean: bridge-utils-clean
	rm -rf $(_BUILD_BRIDGE_UTILS)

# #####################################################################
_PACKAGE_IPROUTE2=$(_DOWNLOAD_DIR)/iproute2-2.6.10-050209.tar.gz
_DOWNLOAD_IPROUTE2=http://developer.osdl.org/dev/iproute2/download/iproute2-2.6.10-050209.tar.gz
_BUILD_IPROUTE2=$(_SOURCE)/iproute2-2.6.9-050209

iproute2: iproute2-clean $(_STATE)/iproute2.all_done

iproute2-fetch: $(_PACKAGE_IPROUTE2)

$(_PACKAGE_IPROUTE2):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_IPROUTE2)

$(_STATE)/iproute2.unpacked: $(_PACKAGE_IPROUTE2)
	tar -C $(_SOURCE) -xzf $(_PACKAGE_IPROUTE2)
	touch $(_STATE)/iproute2.unpacked

$(_STATE)/iproute2.configured: $(_STATE)/iproute2.unpacked
	(cd $(_BUILD_IPROUTE2); $(CONFIGURE) --prefix=/usr);
	touch $(_STATE)/iproute2.configured

$(_STATE)/iproute2.compiled: $(_STATE)/iproute2.configured
	make -C $(_BUILD_IPROUTE2) CC=$(CC) all
	touch $(_STATE)/iproute2.compiled

$(_STATE)/iproute2.all_done: $(_STATE)/iproute2.compiled
	$(STRIP) --strip-all $(_BUILD_IPROUTE2)/ip/ip
	$(STRIP) --strip-all $(_BUILD_IPROUTE2)/tc/tc
	touch $(_STATE)/iproute2.all_done

iproute2-install: $(_STAGE2) $(_STATE)/iproute2.all_done
	cp $(_BUILD_IPROUTE2)/ip/ip $(_STAGE2)/sbin
	cp $(_BUILD_IPROUTE2)/tc/tc $(_STAGE2)/sbin

iproute2-clean:
	rm -f $(_STATE)/iproute2.*

iproute2-distclean: iproute2-clean
	rm -rf $(_BUILD_IPROUTE2)

# #####################################################################
_PACKAGE_PPPD=$(_DOWNLOAD_DIR)/ppp-2.4.2.tar.gz
_DOWNLOAD_PPPD=ftp://ftp.samba.org/pub/ppp/ppp-2.4.2.tar.gz
_BUILD_PPPD=$(_SOURCE)/ppp-2.4.2

pppd: pppd-clean $(_STATE)/pppd.all_done

pppd-fetch: $(_PACKAGE_PPPD)

$(_PACKAGE_PPPD):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_PPPD)

$(_STATE)/pppd.unpacked: $(_PACKAGE_PPPD)
	tar -C $(_SOURCE) -xzf $(_PACKAGE_PPPD)
	touch $(_STATE)/pppd.unpacked

$(_STATE)/pppd.configured: $(_STATE)/pppd.unpacked
	(cd $(_BUILD_PPPD); $(CONFIGURE) --prefix=/usr);
	sed -i -e "s/^FILTER=y/#FILTER=y/" $(_BUILD_PPPD)/pppd/Makefile
	sed -i -e "s/^CC\t= gcc/#CC\t= gcc/" $(_BUILD_PPPD)/pppd/plugins/Makefile
	sed -i -e "s/^\tgcc/\t\$$\(CC\)/" -e "s/^\tar/\t\$$\(AR\)/" $(_BUILD_PPPD)/pppd/plugins/rp-pppoe/Makefile
	touch $(_STATE)/pppd.configured

$(_STATE)/pppd.compiled: $(_STATE)/pppd.configured
	make -C $(_BUILD_PPPD) all
	touch $(_STATE)/pppd.compiled

$(_STATE)/pppd.all_done: $(_STATE)/pppd.compiled
	$(STRIP) --strip-all $(_BUILD_PPPD)/chat/chat
	$(STRIP) --strip-all $(_BUILD_PPPD)/pppd/pppd
	$(STRIP) --strip-all $(_BUILD_PPPD)/pppd/plugins/rp-pppoe/rp-pppoe.so
	$(STRIP) --strip-all $(_BUILD_PPPD)/pppstats/pppstats
	touch $(_STATE)/pppd.all_done

pppd-install: $(_STAGE2) $(_STATE)/pppd.all_done
	cp $(_BUILD_PPPD)/chat/chat $(_STAGE2)/usr/bin
	cp $(_BUILD_PPPD)/pppd/pppd $(_STAGE2)/usr/sbin
	cp $(_BUILD_PPPD)/pppd/plugins/rp-pppoe/rp-pppoe.so $(_STAGE2)/etc/ppp/plugins/
	cp $(_BUILD_PPPD)/pppstats/pppstats $(_STAGE2)/usr/bin

pppd-clean:
	rm -f $(_STATE)/pppd.*

pppd-distclean: pppd-clean
	rm -rf $(_BUILD_PPPD)

# #####################################################################
_STAGE1_REAL_TARGETS:=$(patsubst %,%-install,$(_STAGE1_TARGETS))
_STAGE1_FETCH_TARGETS:=$(patsubst %,%-fetch,$(_STAGE1_TARGETS))
_STAGE1_CLEAN_TARGETS:=$(patsubst %,%-clean,$(_STAGE1_TARGETS))
_STAGE1_DISTCLEAN_TARGETS:=$(patsubst %,%-distclean,$(_STAGE1_TARGETS))

$(_STAGE1):
	mkdir -p $(_STAGE1)
	cp -r $(_STAGE1_SKEL)/* $(_STAGE1)

$(_STAGE1_IMG):
	mkdir -p $(_STAGE1_IMG)

stage1: $(_STAGE1) $(_STAGE1_IMG) $(_STAGE1_REAL_TARGETS)
	$(_BUILD_CRAMFS)/mkcramfs $(_STAGE1) $(_STAGE1_IMG)/stage1.cramfs
	$(_TOOLS)/trx -o $(_STAGE1_IMG)/firmware.trx \
		$(_BUILD_KERNEL)/arch/mips/brcm-boards/bcm947xx/compressed/vmlinuz \
		$(_STAGE1_IMG)/stage1.cramfs
	$(_TOOLS)/gen_image $(_STAGE1_IMG)/firmware.trx > $(_STAGE1_IMG)/firmware.img

stage1-fetch: $(_STAGE1_FETCH_TARGETS)

stage1-clean: $(_STAGE1_CLEAN_TARGETS)
	rm -rf $(_STAGE1) $(_STAGE1_IMG)

stage1-distclean: $(_STAGE1_DISTCLEAN_TARGETS)
	rm -rf $(_STAGE1) $(_STAGE1_IMG)

# #####################################################################
_STAGE2_REAL_TARGETS:=$(patsubst %,%-install,$(_STAGE2_TARGETS))
_STAGE2_FETCH_TARGETS:=$(patsubst %,%-fetch,$(_STAGE2_TARGETS))
_STAGE2_CLEAN_TARGETS:=$(patsubst %,%-clean,$(_STAGE2_TARGETS))
_STAGE2_DISTCLEAN_TARGETS:=$(patsubst %,%-distclean,$(_STAGE2_TARGETS))

$(_STAGE2):
	mkdir -p $(_STAGE2)
	cp -r $(_STAGE2_SKEL)/* $(_STAGE2)

stage2: $(_STAGE2) $(_STAGE2_REAL_TARGETS)
	cp -r $(_STAGE2_SKEL)/* $(_STAGE2)
	cp -r $(TOOLCHAIN)/lib/*.so* $(_STAGE2)/lib/

stage2-fetch: $(_STAGE2_FETCH_TARGETS)

stage2-clean: $(_STAGE2_CLEAN_TARGETS)

stage2-distclean: $(_STAGE2_DISTCLEAN_TARGETS)
	rm -rf $(_STAGE2)

# #####################################################################

sync:
	mount /dev/sda1 /mnt/usbdisk
	rsync -a -c --delete --progress --stats $(_STAGE2)/ /mnt/usbdisk
	umount /mnt/usbdisk