TARGET = arm-linux
BUILD_DIR = BUILD_$(TARGET)

BINUTILS = binutils-2.18
GCC = gcc-4.3.2
NEWLIB = newlib-1.16.0
GMP = gmp-4.2.4
MPFR = mpfr-2.3.2
CHUMBY_SDK = arm-linux-v4.1.2b

GCC_VERSION = $(shell echo $(GCC) | sed -e 's/[^0-9.]//g')
SDK_VERSION = $(shell echo $(CHUMBY_SDK) | sed -e 's/[^0-9.]//g')

CHUMBY_ROOT = /usr/local/chumby
SYS_ROOT = $(CHUMBY_ROOT)/usr/arm-linux
TOOLCHAIN_DIR = toolchain

all : chumby binutils gcc

$(CHUMBY_SDK).tar.gz :
	wget http://files.chumby.com/toolchain/$@

$(CHUMBY_ROOT) : $(CHUMBY_SDK).tar.gz
	if ! [ -d $@ ]; then mkdir $@; fi; \
	tar zvxf $< -C $@; \
	cd $(SYS_ROOT); \
	(cd include; \
	ln -s ../sys-include/asm-arm asm; \
	ln -s ../sys-include/linux .; \
	ln -s ../sys-include/mtd .; \
	ln -s ../sys-include/sound .); \
	ln -s . usr; \
	ln -s . arm-linux;

chumby : $(CHUMBY_ROOT)

$(BINUTILS).tar.bz2 :
	wget http://ftp.gnu.org/gnu/binutils/$@

$(BINUTILS) : $(BINUTILS).tar.bz2
	tar jvxf $<

$(GCC).tar.gz :
	wget ftp://ftp.ring.gr.jp/pub/GNU/gcc/$(GCC)/$@

$(GCC) : $(GCC).tar.gz
	tar zvxf $<

binutils : $(BINUTILS)
	cd $<; \
	if ! [ -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi; \
	cd $(BUILD_DIR); \
	if ! [ -f Makefile ]; then ../configure --prefix=$(CHUMBY_ROOT)/$(TOOLCHAIN_DIR) --target=$(TARGET) --with-sysroot=$(SYS_ROOT); fi; \
	make; \
	make install


$(GMP).tar.bz2 :
	wget ftp://ftp.gmplib.org/pub/$@

$(GMP) : $(GMP).tar.bz2
	tar jvxf $<

gmp : $(GMP)
	cd $<; \
	if ! [ -f Makefile ]; then ./configure; fi; \
	make; \
	rm -rf check.log; \
	make check | tee check.log;

$(MPFR).tar.bz2 :
	wget http://www.mpfr.org/mpfr-current/$@

$(MPFR) : $(MPFR).tar.bz2
	tar jvxf $<

mpfr : $(MPFR)
	cd $<; \
	if ! [ -f Makefile ]; \
	then ./configure --with-gmp-build=../$(GMP); \
	sed -e s/\\/$(GMP)/\\/\\.\\.\\/$(GMP)/g < tests/Makefile > tests/Makefile.2; \
	mv tests/Makefile.2 tests/Makefile; \
	fi; \
	make; \
	rm -rf check.log; \
	make check | tee check.log;

gcc : $(GCC) gmp mpfr
	cd $<; \
	if ! [ -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi; \
	cd $(BUILD_DIR); \
	if ! [ -f Makefile ]; \
	then ../configure --prefix=$(CHUMBY_ROOT)/$(TOOLCHAIN_DIR) --target=$(TARGET) --enable-languages="c++" --with-sysroot=$(SYS_ROOT) --with-gmp-include=../../$(GMP) --with-gmp-lib=../../$(GMP)/.libs --with-mpfr-include=../../$(MPFR) --with-mpfr-lib=../../$(MPFR)/.libs; \
	fi; \
	make LANGUAGES="c c++"; \
	make install; \
	cd $(CHUMBY_ROOT)/$(TOOLCHAIN_DIR)/$(TARGET)/lib; \
	ln -s $(CHUMBY_ROOT)/usr/lib/gcc/$(TARGET) .; \
	if ! [ "$(SDK_VERSION)" = "$(GCC_VERSION)" ]; then (cd $(TARGET); ln -s $(CHUMBY_ROOT)/usr/lib/gcc/$(TARGET)/$(SDK_VERSION) $(GCC_VERSION)); fi;