tce-load -i compiletc meson nasm

wget https://code.videolan.org/videolan/dav1d/-/archive/1.5.3/dav1d-1.5.3.tar.gz

cd dav1d-1.5.3

mkdir build
cd build

CC="gcc -flto -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -flto -march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti" meson setup --prefix=/usr/local --localstatedir=/var --buildtype=plain

ninja [1m 4.66s]
sudo ninja install

dav1d 1.5.3

  User defined options
    buildtype    : plain
    localstatedir: /var
    prefix       : /usr/local