tce-load -i compiletc xcb-proto libXau-dev libXdmcp-dev libxcb-dev python3.8

https://xcb.freedesktop.org/dist/xcb-util-0.4.0.tar.bz2

cd xcb-util-0.4.0

CC="gcc -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe" CXX="g++ -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --sysconfdir=/etc --without-doxygen

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

make [0m 1.42s]
make install