tce-load -i compiletc meson gtk4-dev gtk4-gir gobject-introspection-dev vala-dev appstream-dev

wget https://download.gnome.org/sources/libadwaita/1.4/libadwaita-1.4.2.tar.xz

cd libadwaita-1.4.2

mkdir build
cd build

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain -Dexamples=false

ninja [1m 8.71s]
sudo ninja install

libadwaita 1.4.2

  Options
    Tests        : True
    Examples     : False
    Documentation: False
    Introspection: True
    Vapi         : True

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