tce-load -i compiletc meson js68-dev gobject-introspection-dev gtk3-dev gtk3-gir

https://ftp.gnome.org/pub/GNOME/sources/gjs/1.64/gjs-1.64.0.tar.xz

cd gjs-1.64.0

mkdir build-gjs
cd build-gjs

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os" meson --prefix=/usr/local --localstatedir=/var --libexecdir=/usr/local/lib --buildtype=plain

[-fno-exceptions fails]

ninja [0m 45.28s]
sudo ninja install