export TARGET="${1}"
export PREFIX="`pwd`/rel-bin/${TARGET}"
export PATH="${PREFIX}/bin:${PATH}"
export OUT="`pwd`/out"

#### JEŚLI BĘDĄ NOWE WERSJE BINUTILS'A i GCC PROSZĘ ZMIENIĆ NUMER!!!
export binutils_version="2.31"	#TU ZMIENIAMY!
export newlib_version="3.0.0"	#TU ZMIENIAMY!
export gcc_version="LATEST-9" 	#TU ZMIENIAMY!
export nproc=$(( `grep -c "processor" /proc/cpuinfo` * 2 ))
export binutils_ext="tar.xz"	#TU POD ŻADNYM POZOREM NIE ZMIENIAJ TYPU!!!!!
####

if ! command -v lftp >/dev/null; then
	clear
	printf "\n  Nie znaleziono \"lftp\"!\n  Prosze zanistaluj go na swoim obecnym systemie!\n\n"
	exit 1
fi

(
	if [ ! -e binutils-${binutils_version}${binutils_ext} ]; then
		wget -c "http://ftp.gnu.org/gnu/binutils/binutils-${binutils_version}.${binutils_ext}"
	fi
	if [ ! -d binutils-${binutils_version} ]; then
		tar -xf binutils-*.*
	fi
)	|| exit 1

if ! (
	mkdir -pv build-binutils
	(cd build-binutils; ../binutils-*/configure --target="${TARGET}" --prefix="${PREFIX}" --disable-nls --disable-werror --enable-obsolete)
	make -C build-binutils -j${nproc}
	make -C build-binutils -j${nproc} install
)
then
	exit 1
fi

(
	if [ ! -e */gcc-*.* ]; then
		lftp -c "open ftp://ftp.fu-berlin.de/unix/languages/gcc/snapshots ; mirror ${gcc_version}"
	fi
	if [ ! -d gcc-* ]; then
		tar -xf */gcc-*.*
	fi
)	|| exit 1

(
	if [ ! -e newlib-*.tar.gz ]; then
		wget -c "ftp://sources.redhat.com/pub/newlib/newlib-${newlib_version}.tar.gz"
	fi
	if [ ! -d newlib-* ]; then
		tar -xf newlib-*.tar.gz
	fi
)	|| exit 1

if ! (
	(cd gcc-*; contrib/download_prerequisites)
	mkdir -pv build-gcc
	(cd build-gcc; ../gcc-*/configure --target="${TARGET}" --prefix="${PREFIX}" --disable-lto --disable-nls --disable-werror --enable-languages=all --enable-multilib --enable-multiarch --with-pkgversion="*DANiO* T00LCHAIN" --with-system-zlib --enable-obsolete --with-newlib --with-headers="../newlib-*/newlib/libc/include")
)
then
	exit 1
fi

maybe_try_this()
{
	make -C build-gcc all-gcc -j${nproc} || return 1
	make -C build-gcc all-target-libgcc -j${nproc} || return 1
	make -C build-gcc install-gcc -j${nproc} || return 1
	make -C build-gcc install-target-libgcc -j${nproc} || return 1
}

if ! (
	make -C build-gcc -j${nproc} || maybe_try_this
	make -C build-gcc install -j${nproc} || maybe_try_this
)
then
	exit 1
fi

if (
	mkdir -pv build-newlib
	(cd build-newlib; ../newlib-*/configure --target="${TARGET}" --prefix="${PREFIX}")
	make -C build-newlib -j${nproc}
	make -C build-newlib install
)
then
	find ${PREFIX} | xargs file | grep "ELF" | grep "executable" | cut -f 1 -d ":" | xargs strip -S 2>/dev/null
	mkdir -pv out
	if [ "${CC}" == "cc -m64" ]; then
		(cd ${PREFIX}; tar -cJf "${OUT}/${TARGET}-`date +"%d-%m-%Y"`_x86-64.txz" .)
	else
		(cd ${PREFIX}; tar -cJf "${OUT}/${TARGET}-`date +"%d-%m-%Y"`_x86-32.txz" .)
	fi
	rm -rf build-*
	#printf "\n  POPRAWNIE ZBUDOWANO GCC DLA ${TARGET}!\n\n"
else
	echo "STAGE=${TARGET}" > .error
	exit 1
fi