cd "$SOURCES" && tar xf gcc-$GCC_VERSION.tar.xz && cd gcc-$GCC_VERSION

tar xf ../gmp-$GMP_VERSION.tar.xz && mv gmp-$GMP_VERSION gmp
tar xf ../isl-$ISL_VERSION.tar.xz && mv isl-$ISL_VERSION isl
tar xf ../mpc-$MPC_VERSION.tar.gz && mv mpc-$MPC_VERSION mpc
tar xf ../mpfr-$MPFR_VERSION.tar.xz && mv mpfr-$MPFR_VERSION mpfr

sed -e '/m64=/s/lib64/lib/' -i.orig gcc/config/i386/t-linux64

sed '/thread_header =/s/@.*@/gthr-posix.h/' -i libgcc/Makefile.in libstdc++-v3/include/Makefile.in

mkdir -p build && cd build

../configure \
	--build=$(../config.guess) \
	--host=$TARGET \
	--target=$TARGET \
	--prefix=/usr \
	--with-build-sysroot="$SYSROOT" \
	--enable-default-pie \
	--enable-default-ssp \
	--disable-nls \
	--disable-multilib \
	--disable-libatomic \
	--disable-libgomp \
	--disable-libquadmath \
	--disable-libsanitizer \
	--disable-libssp \
	--disable-libvtv \
	--enable-languages=c,c++ \
	LDFLAGS_FOR_TARGET=-L"$PWD/$TARGET/libgcc" \
	--silent \
	--quiet

make && make DESTDIR="$SYSROOT" install

ln -s gcc "$SYSROOT"/usr/bin/cc

cd "$SOURCES" && rm -rf gcc-$GCC_VERSION