diff --git a/helpers/mktoolchain.sh b/helpers/mktoolchain.sh
new file mode 100755
index 00000000000..31e04abfea4
--- /dev/null
+++ b/helpers/mktoolchain.sh
@@ -0,0 +1,393 @@
+#!/bin/sh
+#
+# Script to be able to build a full cross toolchain for Linux/x86.
+# This has been made thanks to various sources recollected from wikipedia
+# and other cross compiling related pages.
+
+# Setup some defaults
+: ${GNU_URL_BASE:=http://ftp.gnu.org/gnu}
+: ${KERNEL_URL_BASE:=http://www.kernel.org/pub/linux/kernel/v2.6}
+
+: ${GCC_VER:=4.3.2}
+: ${BINUTILS_VER:=2.19}
+: ${GLIBC_VER:=2.7}
+: ${KERNEL_VER:=2.6.27.3}
+: ${SOURCEDISTDIR:=/xbps_srcdistdir}
+: ${CROSSDIR:=/cross-tools}
+
+: ${FETCH_CMD:=wget}
+
+usage()
+{
+	echo "usage: $0 <build directory> <target triplet>"
+	exit 1
+}
+
+check_path()
+{
+	local orig="$1"
+
+	case "$orig" in
+		/) ;;
+		/*) orig="${orig%/}" ;;
+		*) orig="$PWD/${orig%/}" ;;
+	esac
+
+	SANITIZED_DESTDIR=$orig
+}
+
+fetch_sources()
+{
+	local pkg=
+	cd $SOURCEDISTDIR || exit 1
+
+	pkg=linux
+	if [ ! -f $pkg-$KERNEL_VER.tar.bz2 ]; then
+		echo "Fetching $pkg kernel-$KERNEL_VER sources..."
+		$FETCH_CMD $KERNEL_URL_BASE/$pkg-$KERNEL_VER.tar.bz2 || exit 1
+	fi
+
+	pkg=gcc
+	if [ ! -f $pkg-$GCC_VER.tar.bz2 ]; then
+		echo "Fetching $pkg-$GCC_VER..."
+		$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$GCC_VER.tar.bz2 || exit 1
+	fi
+
+	pkg=binutils
+	if [ ! -f $pkg-$BINUTILS_VER.tar.bz2 ]; then
+		echo "Fetching $pkg-$BINUTILS_VER..."
+		$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$BINUTILS_VER.tar.bz2 \
+			|| exit 1
+	fi
+
+	pkg=glibc
+	if [ ! -f $pkg-$GLIBC_VER.tar.bz2 ]; then
+		echo "Fetching $pkg-$GLIBC_VER..."
+		$FETCH_CMD $GNU_URL_BASE/$pkg/$pkg-$GLIBC_VER.tar.bz2 || exit 1
+	fi
+}
+
+kernel_headers()
+{
+	local pkg="linux-$KERNEL_VER"
+
+	cd $BUILDDIR || exit 1
+
+	tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
+	cd $pkg || exit 1
+	make ARCH=$KERNEL_ARCH headers_check || exit 1
+	make ARCH=$KERNEL_ARCH headers_install \
+		INSTALL_HDR_PATH=$SYSROOT/usr || exit 1
+	cd $SYSROOT/usr/include && ln -s asm asm-$KERNEL_ARCH
+	cd $BUILDDIR && rm -rf $pkg || exit 1
+
+	touch -f $CROSSDIR/.kernel_headers_done
+}
+
+binutils()
+{
+	local pkg="binutils-$BINUTILS_VER"
+
+	cd $BUILDDIR || exit 1
+
+	if [ ! -d $pkg ]; then
+		tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
+	fi
+
+	cd $pkg || exit 1
+	[ ! -d build ] && mkdir build || exit 1
+	cd build || exit 1
+
+	../configure --prefix=$CROSSDIR		\
+		--target=$CROSS_TARGET		\
+		--with-sysroot=$SYSROOT		\
+		--with-build-sysroot=$SYSROOT	\
+		--disable-nls --enable-shared	\
+		--disable-multilib || exit 1
+
+	make configure-host && make && make install || exit 1
+
+	# Remove unneeded stuff
+	for f in info man share; do
+		[ -d $CROSSDIR/$f ] && rm -rf $CROSSDIR/$f
+	done
+
+	cd $BUILDDIR && rm -rf $pkg || exit 1
+
+	touch -f $CROSSDIR/.binutils_done
+}
+
+glibc_patches()
+{
+	# Apply some required patches for i[56]86-pc-linux-gnu and
+	# common targets.
+	$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-fixup_for_gcc43-1.patch
+	$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-i586_chk-1.patch
+	$FETCH_CMD http://www.freesa.org/toolchain/patches/glibc-2.7-libgcc_eh-1.patch
+	$FETCH_CMD http://svn.exactcode.de/t2/trunk/package/base/glibc/x86-fnstsw.patch
+
+	patch -Np1 -i glibc-2.7-fixup_for_gcc43-1.patch || exit 1
+	patch -Np1 -i glibc-2.7-i586_chk-1.patch || exit 1
+	patch -Np1 -i glibc-2.7-libgcc_eh-1.patch || exit 1
+	patch -Np1 -i x86-fnstsw.patch || exit 1
+
+	touch -f $BUILDDIR/glibc-$GLIBC_VER/.patches_done
+}
+
+gcc()
+{
+	local stage="$1"
+	local pkg="gcc-$GCC_VER"
+	local configure_args=
+	local make_args=
+	local make_install_args=
+	local touch_f=
+
+	cd $BUILDDIR || exit 1
+
+	if [ ! -d $pkg ]; then
+		tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
+	fi
+
+	[ ! -d $pkg/build ] && mkdir $pkg/build
+
+	cd $pkg/build || exit 1
+
+	case $stage in
+	full)
+		# gcc with support for C and C++.
+		touch_f=".gcc_full_done"
+		make_args="AS_FOR_TARGET=$CROSS_TARGET-as"
+		make_args="$make_args LD_FOR_TARGET=$CROSS_TARGET-ld"
+		make_install_args="install"
+		configure_args="--enable-threads=posix"
+		configure_args="$configure_args --enable-languages=c,c++"
+		configure_args="$configure_args --enable-__cxa_atexit"
+		configure_args="$configure_args --enable-tls"
+		configure_args="$configure_args --prefix=$SYSROOT/usr"
+		;;
+	libgcc)
+		# Enough to be able to build full glibc.
+		make all-target-libgcc && make install-target-libgcc || exit 1
+		rm -rf $SYSROOT/lib/crt* || exit 1
+		touch -f $CROSSDIR/.gcc_libgcc_done
+		cd $BUILDDIR/$pkg && rm -rf build
+		return 0
+		;;
+	bootstrap)
+		# gcc bootstrap
+		touch_f=".gcc_bootstrap_done"
+		make_args="all-gcc"
+		make_install_args="install-gcc"
+		configure_args="--disable-shared --disable-libmudflap"
+		configure_args="$configure_args --disable-threads"
+		configure_args="$configure_args --disable-libssp"
+		configure_args="$configure_args --enable-languages=c"
+		configure_args="$configure_args --prefix=$CROSSDIR"
+		;;
+	*)	;;
+	esac
+
+	../configure --build=$CROSS_HOST --host=$CROSS_HOST	\
+		--target=$CROSS_TARGET				\
+		--with-sysroot=$SYSROOT				\
+		--with-build-sysroot=$SYSROOT			\
+		--disable-multilib				\
+		${configure_args} || exit 1
+
+	env LDFLAGS_FOR_TARGET="--sysroot=$SYSROOT"		\
+	    CPPFLAGS_FOR_TARGET="--sysroot=$SYSROOT"		\
+		make ${make_args} && make ${make_install_args} || exit 1
+
+	# Remove unneeded stuff
+	for f in info share man; do
+		[ -d $CROSSDIR/$f ] && rm -rf $CROSSDIR/$f
+	done
+
+	# Do not remove builddir if bootstrap, we want all objs for
+	# the libgcc pass.
+	if [ "$stage" != "bootstrap" ]; then
+		cd $BUILDDIR/$pkg && rm -rf build || exit 1
+	fi
+
+	touch -f $CROSSDIR/$touch_f
+}
+
+glibc()
+{
+	local stage="$1"
+	local pkg="glibc-$GLIBC_VER"
+	local touch_f=
+	local cross_binutils="$CROSSDIR/$CROSS_TARGET/bin"
+	local configure_args=
+	local CC=
+	local BUILD_CC=
+	local RANLIB=
+	local AR=
+
+	cd $BUILDDIR || exit 1
+
+	if [ ! -d $pkg ]; then
+		tar xfj $SOURCEDISTDIR/$pkg.tar.bz2 -C $BUILDDIR || exit 1
+	fi
+
+	cd $pkg || exit 1
+	[ ! -f .patches_done ] && glibc_patches
+	[ ! -d build ] && mkdir build
+	cd build || exit 1
+
+	# NPTL support.
+	echo "libc_cv_forced_unwind=yes" > config.cache
+	echo "libc_cv_c_cleanup=yes" >> config.cache
+	if [ "$KERNEL_ARCH" = "i386" ]; then
+		echo "CFLAGS+=-march=${CROSS_TARGET%%-*} -mtune=generic" \
+			> configparms
+	fi
+
+	case $stage in
+	startup|full)
+		BUILD_CC=$CROSS_TARGET-gcc
+		CC=$CROSS_TARGET-gcc
+		AR=$CROSS_TARGET-ar
+		RANLIB=$CROSS_TARGET-ranlib
+		configure_args="${configure_args} --with-binutils=$CROSSDIR/bin"
+		configure_args="${configure_args} --cache-file=config.cache"
+		;;
+	headers)
+		CC=gcc
+		configure_args="${configure_args} --with-binutils=$cross_binutils"
+		configure_args="${configure_args} --disable-sanity-checks"
+		;;
+	*)	;;
+	esac
+
+	CC=${CC} BUILD_CC=${BUILD_CC} AR=${AR} RANLIB=${RANLIB}	\
+		../configure --prefix=/usr			\
+		--host=$CROSS_TARGET --build=$CROSS_HOST	\
+		--enable-kernel=2.6.25 --with-tls		\
+		--with-__thread --without-selinux		\
+		--without-gd --without-cvs --disable-profile	\
+		--enable-add-ons				\
+		--with-headers=$SYSROOT/usr/include		\
+		${configure_args} || exit 1
+
+	case $stage in
+	startup)
+		touch_f=".glibc_startup_done"
+		make -r -C ../csu objdir=$PWD $PWD/csu/crt1.o || exit 1
+		make -r -C ../csu objdir=$PWD $PWD/csu/crti.o || exit 1
+		make -r -C ../csu objdir=$PWD $PWD/csu/crtn.o || exit 1
+		mkdir -p $SYSROOT/lib || exit 1
+		cp -f csu/crt1.o csu/crti.o csu/crtn.o $SYSROOT/lib || exit 1
+		;;
+	headers)
+		touch_f=".glibc_headers_done"
+		make cross-compiling=yes \
+			install_root=$SYSROOT install-headers || exit 1
+		cp -v bits/stdio_lim.h $SYSROOT/usr/include/bits || exit 1
+		touch $SYSROOT/usr/include/gnu/stubs.h || exit 1
+		cp -v ../nptl/sysdeps/pthread/pthread.h \
+			$SYSROOT/usr/include || exit 1
+		if [ "$KERNEL_ARCH" = "i386" ]; then
+			local bitsdir="nptl/sysdeps/unix/sysv/linux/i386/bits"
+			cp -v ../$bitsdir/pthreadtypes.h \
+				$SYSROOT/usr/include/bits || exit 1
+		fi
+		;;
+	full)
+		touch_f=".glibc_full_done"
+		make && make install_root=$SYSROOT install || exit 1
+		;;
+	esac
+
+	if [ "$stage" != "headers" ]; then
+		cd $BUILDDIR/$pkg && rm -rf build || exit 1
+	fi
+
+	touch -f $CROSSDIR/$touch_f
+}
+
+[ $# -ne 2 ] && usage
+
+if [ -z "$1" ]; then
+	echo "ERROR: missing cross compiler directory."
+	exit 1
+else
+	check_path $1
+	BUILDDIR=$SANITIZED_DESTDIR
+	SYSROOT=$CROSSDIR/sysroot
+	unset SANITIZED_DESTDIR
+	[ ! -d $SYSROOT/usr ] && mkdir -p $SYSROOT/usr
+	[ ! -d $BUILDDIR ] && mkdir -p $BUILDDIR
+fi
+
+if [ -z "$2" ]; then
+	echo "ERROR: missing target triplet."
+	exit 1
+else
+	CROSS_TARGET=$2
+	case $CROSS_TARGET in
+		i686-pc-linux-gnu)
+			KERNEL_ARCH=i386
+			CROSS_HOST=x86_64-unknown-linux-gnu
+			;;
+		x86-64-linux-gnu)
+			KERNEL_ARCH=x86_64
+			CROSS_HOST=i686-pc-linux-gnu
+			;;
+		*)
+			echo "ERROR: unknown target triplet $CROSS_TARGET."
+			exit 1
+			;;
+	esac
+fi
+
+unset CFLAGS CXXFLAGS CC CXX AR AS RANLIB LD_STRIP
+unset LD_LIBRARY_PATH LD_RUN_PATH
+export PATH="$CROSSDIR/bin:/bin:/usr/bin"
+
+fetch_sources
+
+if [ ! -f $CROSSDIR/.kernel_headers_done ]; then
+	echo "Installing kernel headers..."
+	kernel_headers
+fi
+
+if [ ! -f $CROSSDIR/.binutils_done ]; then
+	echo "Installing binutils..."
+	binutils
+fi
+
+if [ ! -f $CROSSDIR/.glibc_headers_done ]; then
+	echo "Installing glibc headers..."
+	glibc headers
+fi
+
+if [ ! -f $CROSSDIR/.gcc_bootstrap_done ]; then
+	echo "Installing gcc (bootstrap)..."
+	gcc bootstrap
+fi
+
+if [ ! -f $CROSSDIR/.glibc_startup_done ]; then
+	echo "Installing glibc (startup)..."
+	glibc startup
+fi
+
+if [ ! -f $CROSSDIR/.gcc_libgcc_done ]; then
+	echo "Installing gcc (libgcc)..."
+	gcc libgcc
+fi
+
+if [ ! -f $CROSSDIR/.glibc_full_done ]; then
+	echo "Installing glibc (full)..."
+	glibc full
+fi
+
+if [ ! -f $CROSSDIR/.gcc_full_done ]; then
+	echo "Installing gcc (full)..."
+	gcc full
+fi
+
+echo "Finished. Toolchain for $CROSS_TARGET at $CROSSDIR."
+
+exit 0