# http://www.nongnu.org/avr-libc/user-manual/install_tools.html
# http://doswa.com/blog/2010/08/24/avrdude-5-10-with-ftdi-bitbang/

TOP=$(CURDIR)

CHAIN=20101030
TOOLCHAIN=$(TOP)/../avr-linux-libc-toolchain-$(CHAIN)

export PATH:=$(TOOLCHAIN)/bin:$(PATH)
export LD_LIBRARY_PATH:=$(LD_LIBRARY_PATH):$(TOOLCHAIN)/lib

TARGET="avr"
INSTALLDIR=$(TOOLCHAIN)
DOWNLOADDIR=$(TOP)/download
BUILDDIR=$(TOP)/build

binutils=binutils-2.20.1
binutilsurl=ftp://ftp.gnu.org/gnu/binutils

mpc=mpc-0.8.1
mpcurl=ftp://gcc.gnu.org/pub/gcc/infrastructure

gccver=4.4.4
#gccver=4.5.0
#gccver=4.6-20101009
gcc=gcc-$(gccver)
gccurl=ftp://gcc.gnu.org/pub/gcc/releases/$(gcc)
#gccurl=ftp://gcc.gnu.org/pub/gcc/snapshots/$(gccver)

libc=avr-libc-1.7.0
libcdoc=avr-libc-user-manual-1.7.0.pdf
libcurl=http://download.savannah.gnu.org/releases/avr-libc

gdb=gdb-7.2
gdburl=ftp://gcc.gnu.org/pub/gdb/releases

libftd=libftd2xx0.4.16
libftdurl=http://www.ftdichip.com/Drivers/D2XX/Linux/

dfuprog=dfu-programmer-0.5.2
dfuprogurl=http://surfnet.dl.sourceforge.net/sourceforge/dfu-programmer

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

.PHONY: all build clean check download extract

all:
	rm -rf $(TOOLCHAIN).old
	-mv -f $(TOOLCHAIN) $(TOOLCHAIN).old
	mkdir -p $(TOOLCHAIN)
	$(MAKE) check
	$(MAKE) download
	mkdir -p $(BUILDDIR)
	$(MAKE) build

build:	binutils mpc gcc libc libc_manual gdb dfuprog
	-strip $(TOOLCHAIN)/bin/*
	-strip $(TOOLCHAIN)/avr/bin/*
	-strip $(TOOLCHAIN)/libexec/gcc/avr/*/*
	-strip $(TOOLCHAIN)/libexec/gcc/avr/*/install-tools/*
	rm -rf $(TOOLCHAIN)/info
	rm -rf `ls $(TOOLCHAIN)/share/locale|grep -v locale/de`
	chmod -R go-rwx $(TOOLCHAIN)

clean:
	rm -rf $(BUILDDIR) *~

check:
	test -x /usr/bin/bison
	test -x /usr/bin/flex
	test -x /usr/bin/gcc
	test -x /usr/bin/byacc
	test -x /usr/bin/g++
	test -x /usr/bin/wget
	test -f /usr/include/usb.h

download:
	mkdir -p $(DOWNLOADDIR)
	wget  -P $(DOWNLOADDIR) -N $(binutilsurl)/$(binutils).tar.bz2
	wget  -P $(DOWNLOADDIR) -N $(mpcurl)/$(mpc).tar.gz
	wget  -P $(DOWNLOADDIR) -N $(gccurl)/$(gcc).tar.bz2
	wget  -P $(DOWNLOADDIR) -N $(libcurl)/$(libc).tar.bz2
	wget  -P $(DOWNLOADDIR) -N $(libcurl)/$(libcdoc).bz2
	wget  -P $(DOWNLOADDIR) -N $(gdburl)/$(gdb).tar.bz2
	wget  -P $(DOWNLOADDIR) -N $(libftdurl)/$(libftd).tar.gz
	wget  -P $(DOWNLOADDIR) -N $(dfuprogurl)/$(dfuprog).tar.gz

extract:
	rm -rf $(BUILDDIR)/$(SOURCE)
	if test -f $(DOWNLOADDIR)/$(SOURCE).tar.bz2; then \
	  tar -C $(BUILDDIR) -xjf $(DOWNLOADDIR)/$(SOURCE).tar.bz2; \
	else \
	  tar -C $(BUILDDIR) -xzf $(DOWNLOADDIR)/$(SOURCE).tar.gz; \
	fi

binutils: OBJDIR=$(BUILDDIR)/obj-$@
binutils:
	$(MAKE) extract SOURCE=$(binutils)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(binutils)/configure --prefix=$(INSTALLDIR) --target=$(TARGET) --disable-nls)
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install

mpc: OBJDIR=$(BUILDDIR)/obj-$@
mpc:
	$(MAKE) extract SOURCE=$(mpc)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(mpc)/configure --prefix=$(INSTALLDIR))
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install

gcc: OBJDIR=$(BUILDDIR)/obj-$@
gcc:
	$(MAKE) extract SOURCE=$(gcc)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(gcc)/configure --prefix=$(INSTALLDIR) --target=$(TARGET) --enable-languages=c --disable-libssp --disable-nls --with-mpc=$(INSTALLDIR))
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install

libc: OBJDIR=$(BUILDDIR)/obj-$@
libc:
	$(MAKE) extract SOURCE=$(libc)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(libc)/configure --prefix=$(INSTALLDIR) --host=$(TARGET) CC="$(INSTALLDIR)/bin/$(TARGET)-gcc")
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install

libc_manual:
	mkdir -p $(INSTALLDIR)/share/doc
	bzcat $(DOWNLOADDIR)/$(libcdoc).bz2 > $(INSTALLDIR)/share/doc/$(libc)/$(libcdoc)

gdb: OBJDIR=$(BUILDDIR)/obj-$@
gdb:
	$(MAKE) extract SOURCE=$(gdb)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(gdb)/configure --prefix=$(INSTALLDIR) --target=$(TARGET))
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install

libftd: OBJDIR=$(BUILDDIR)/obj-$@
libftd:
	$(MAKE) extract SOURCE=$(libftd)

dfuprog: OBJDIR=$(BUILDDIR)/obj-$@
dfuprog:
	$(MAKE) extract SOURCE=$(dfuprog)
	rm -rf $(OBJDIR)
	mkdir $(OBJDIR)
	(cd $(OBJDIR); \
	 $(BUILDDIR)/$(dfuprog)/configure --prefix=$(INSTALLDIR))
	$(MAKE) -C $(OBJDIR)
	$(MAKE) -C $(OBJDIR) install