# used kernel:
_KERNEL_DIR := /home/development/asus-stuff/broadcom/src/linux/linux

# output dir:
_TOOLCHAIN=/opt/mipsel-toolchain

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

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

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

# #####################################################################
# MAIN TARGETS
# #####################################################################
toolchain: $(_TOOLCHAIN)/.all-done

toolchain-fetch: binutils-fetch gcc-fetch uclibc-fetch

# binutils (+ extracted patches from broadcom hnd-tools + uclibc buildroot patches)
$(_TOOLCHAIN)/.step1: binutils-install
	touch $(_TOOLCHAIN)/.step1

# static gcc (+ extracted patches from broadcom hnd-tools + uclibc buildroot patches)
$(_TOOLCHAIN)/.step2: $(_TOOLCHAIN)/.step1 gcc-initial-install
	touch $(_TOOLCHAIN)/.step2

# kernel header (NOT USED !)
$(_TOOLCHAIN)/.step3: $(_TOOLCHAIN)/.step2 
	touch $(_TOOLCHAIN)/.step3

# uclibc 
$(_TOOLCHAIN)/.step4: $(_TOOLCHAIN)/.step3 uclibc-install
	touch $(_TOOLCHAIN)/.step4

# shared gcc (+ extracted patches from broadcom hnd-tools + uclibc buildroot patches)
$(_TOOLCHAIN)/.step5: $(_TOOLCHAIN)/.step4 gcc-final-install
	touch $(_TOOLCHAIN)/.step5

# final
$(_TOOLCHAIN)/.all-done: $(_TOOLCHAIN)/.step5
	touch $(_TOOLCHAIN)/.all-done
 
# #####################################################################
# BUILD HOST TOOLCHAIN 
# #####################################################################
_PACKAGE_BINUTILS=$(_DOWNLOAD_DIR)/binutils-2.13.2.1.tar.bz2
_DOWNLOAD_BINUTILS=ftp://ftp.fu-berlin.de/unix/gnu/binutils/binutils-2.13.2.1.tar.bz2
_BUILD_BINUTILS_SRC=$(_SOURCE)/binutils-2.13.2.1
_BUILD_BINUTILS=$(_SOURCE)/binutils-2.13.2.1-host

binutils: binutils-clean $(_BUILD_BINUTILS)/.all-done

binutils-fetch: $(_PACKAGE_BINUTILS)

$(_PACKAGE_BINUTILS):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_BINUTILS)

$(_BUILD_BINUTILS_SRC)/.unpacked: $(_PACKAGE_BINUTILS)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_BINUTILS)
	touch $(_BUILD_BINUTILS_SRC)/.unpacked

$(_BUILD_BINUTILS_SRC)/.patched: $(_BUILD_BINUTILS_SRC)/.unpacked
	(cd $(_BUILD_BINUTILS_SRC); cat $(_PATCHES)/???_binutils-*.patch | patch -p1 );
	touch $(_BUILD_BINUTILS_SRC)/.patched

$(_BUILD_BINUTILS)/.configured: $(_BUILD_BINUTILS_SRC)/.patched
	mkdir -p $(_BUILD_BINUTILS)
	(cd $(_BUILD_BINUTILS); $(_BUILD_BINUTILS_SRC)/configure \
		--build=i386-pc-linux-gnu \
		--host=i386-pc-linux-gnu \
		--target=mipsel-linux-uclibc \
		--prefix=$(_TOOLCHAIN) \
		--disable-nls \
		--with-bcm4710a0 );
	touch $(_BUILD_BINUTILS)/.configured

$(_BUILD_BINUTILS)/.all-done: $(_BUILD_BINUTILS)/.configured
	make -C $(_BUILD_BINUTILS) all
	touch $(_BUILD_BINUTILS)/.all-done

binutils-install: $(_BUILD_BINUTILS)/.all-done
	mkdir -p $(_TOOLCHAIN)/lib $(_TOOLCHAIN)/mipsel-linux-uclibc
	(cd $(_TOOLCHAIN)/mipsel-linux-uclibc; ln -s ../lib lib);
	make -C $(_BUILD_BINUTILS) install

binutils-clean:
	rm -f $(_BUILD_BINUTILS)/.configured $(_BUILD_BINUTILS)/.compiled $(_BUILD_BINUTILS)/.all-done

binutils-distclean:
	rm -rf $(_BUILD_BINUTILS)

# #####################################################################
_PACKAGE_GCC=$(_DOWNLOAD_DIR)/gcc-3.2.3.tar.gz
_DOWNLOAD_GCC=ftp://ftp.fu-berlin.de/unix/gnu/gcc/gcc-3.2.3.tar.gz
_BUILD_GCC_SRC=$(_SOURCE)/gcc-3.2.3
_BUILD_GCC1=$(_BUILD_GCC_SRC)-initial

gcc-initial: $(_BUILD_GCC1)/.all-done

gcc-fetch: $(_PACKAGE_GCC)
gcc-initial-fetch: $(_PACKAGE_GCC)

$(_PACKAGE_GCC):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_GCC)

$(_BUILD_GCC_SRC)/.unpacked: $(_PACKAGE_GCC)
	tar -C $(_SOURCE) -xzf $(_PACKAGE_GCC)
	touch $(_BUILD_GCC_SRC)/.unpacked

$(_BUILD_GCC_SRC)/.patched: $(_BUILD_GCC_SRC)/.unpacked
	(cd $(_BUILD_GCC_SRC); cat $(_PATCHES)/???_gcc-*.patch | patch -p1 );
	touch $(_BUILD_GCC_SRC)/.patched

$(_BUILD_GCC1)/.configured: $(_BUILD_GCC_SRC)/.patched
	mkdir -p $(_BUILD_GCC1)
	(cd $(_BUILD_GCC1); $(_BUILD_GCC_SRC)/configure \
		--build=i386-pc-linux-gnu \
		--host=i386-pc-linux-gnu \
		--target=mipsel-linux-uclibc \
		--prefix=$(_TOOLCHAIN) \
		--enable-languages=c \
		--disable-shared \
		--disable-threads \
		--disable-nls \
		--with-gnu-ld \
		--with-gnu-as \
		--with-bcm4710a0 );
	touch $(_BUILD_GCC1)/.configured


$(_BUILD_GCC1)/.all-done: $(_BUILD_GCC1)/.configured
	make -C $(_BUILD_GCC1) all-gcc
	touch $(_BUILD_GCC1)/.all-done

gcc-initial-install: $(_BUILD_GCC1)/.all-done
	make -C $(_BUILD_GCC1) install-gcc

gcc-initial-clean:
	rm -f $(_BUILD_GCC1)/.configured $(_BUILD_GCC1)/.compiled $(_BUILD_GCC1)/.all-done

gcc-initial-distclean:
	rm -rf $(_BUILD_GCC1)

# #####################################################################
_PACKAGE_UCLIBC=$(_DOWNLOAD_DIR)/uClibc-0.9.27.tar.bz2
_DOWNLOAD_UCLIBC=http://www.uclibc.org/downloads/uClibc-0.9.27.tar.bz2
_BUILD_UCLIBC=$(_SOURCE)/uClibc-0.9.27

uclibc: $(_BUILD_UCLIBC)/.all-done

uclibc-fetch: $(_PACKAGE_UCLIBC)

$(_PACKAGE_UCLIBC):
	$(WGET) -P $(_DOWNLOAD_DIR) $(_DOWNLOAD_UCLIBC)

$(_BUILD_UCLIBC)/.unpacked: $(_PACKAGE_UCLIBC)
	tar -C $(_SOURCE) -xjf $(_PACKAGE_UCLIBC)
	touch $(_BUILD_UCLIBC)/.unpacked

$(_BUILD_UCLIBC)/.configured: $(_BUILD_UCLIBC)/.unpacked
	cp $(_CONFIGS)/uclibc.conf $(_BUILD_UCLIBC)/.config
	sed -i -e 's:KERNEL_SOURCE=.*:KERNEL_SOURCE=\"$(_KERNEL_DIR)\":g' $(_BUILD_UCLIBC)/.config
	sed -i -e 's:RUNTIME_PREFIX=.*:RUNTIME_PREFIX=\"$(_TOOLCHAIN)\":g' $(_BUILD_UCLIBC)/.config
	sed -i -e 's:DEVEL_PREFIX=.*:DEVEL_PREFIX=\"$(_TOOLCHAIN)\":g' $(_BUILD_UCLIBC)/.config
	make -C $(_BUILD_UCLIBC) oldconfig
	touch $(_BUILD_UCLIBC)/.configured

$(_BUILD_UCLIBC)/.all-done: $(_BUILD_UCLIBC)/.configured
	make -C $(_BUILD_UCLIBC) CROSS=mipsel-linux-uclibc- DEVEL_PREFIX=$(_TOOLCHAIN) all
	make -C $(_BUILD_UCLIBC)/utils RUNTIME_PREFIX=$(_TOOLCHAIN) hostutils
	touch $(_BUILD_UCLIBC)/.all-done

uclibc-install: $(_BUILD_UCLIBC)/.all-done
	make -C $(_BUILD_UCLIBC) install
	cp $(_BUILD_UCLIBC)/utils/ldd.host $(_TOOLCHAIN)/bin/mipsel-linux-uclibc-ldd

uclibc-clean:
	rm -f $(_BUILD_UCLIBC)/.configured $$(_BUILD_UCLIBC)/.compiled $(_BUILD_UCLIBC)/.all-done

uclibc-distclean:
	rm -rf $(_BUILD_UCLIBC)

# #####################################################################
_BUILD_GCC2=$(_BUILD_GCC_SRC)-final

gcc-final: $(_BUILD_GCC2)/.all-done

$(_BUILD_GCC2)/.configured: $(_BUILD_GCC_SRC)/.patched
	mkdir -p $(_BUILD_GCC2)
	(cd $(_TOOLCHAIN)/mipsel-linux-uclibc; ln -s ../include sys-include);
	(cd $(_BUILD_GCC2); $(_BUILD_GCC_SRC)/configure \
		--build=i386-pc-linux-gnu \
		--host=i386-pc-linux-gnu \
		--target=mipsel-linux-uclibc \
		--prefix=$(_TOOLCHAIN) \
		--enable-languages=c,c++ \
		--enable-shared \
		--disable-nls \
		--with-gnu-ld \
		--with-gnu-as \
		--with-bcm4710a0 );
	touch $(_BUILD_GCC2)/.configured

$(_BUILD_GCC2)/.all-done: $(_BUILD_GCC2)/.configured
	make -C $(_BUILD_GCC2) all
	touch $(_BUILD_GCC2)/.all-done

gcc-final-install: $(_BUILD_GCC2)/.all-done
	make -C $(_BUILD_GCC2) install
	set -e; (cd $(_TOOLCHAIN); \
		ln -sf mipsel-linux-uclibc mipsel-linux; \
		ln -sf mipsel-linux-uclibc mipsel-uclibc; \
		cd bin; \
		for app in mipsel-linux-uclibc-* ; do \
			ln -sf $${app} mipsel-linux$${app##mipsel-linux-uclibc}; \
			ln -sf $${app} mipsel-uclibc$${app##mipsel-linux-uclibc}; \
		done; \
	);

gcc-final-clean:
	rm -f $(_BUILD_GCC2)/.configured $(_BUILD_GCC2)/.compiled $(_BUILD_GCC2)/.all-done

gcc-final-distclean:
	rm -rf $(_BUILD_GCC2)