tce-load -i compiletc python3.6-dev docbook_xsl

http://files.itstool.org/itstool/itstool-2.0.6.tar.bz2

cd itstool-2.0.6

PYTHON=/usr/local/bin/python3.6 CC="gcc -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var

make
sudo make install