tce-load -i compiletc python3.9-dev

wget https://download.gnome.org/sources/libxml2/2.10/libxml2-2.10.4.tar.xz

cd libxml2-2.10.4

CC="gcc -flto -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static --with-python=/usr/local/bin/python3.9 --with-history --sysconfdir=/usr/local/etc

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [1m 13.75s]
sudo make install