tce-load -i compiletc meson gtk4mm-dev

wget https://freedesktop.org/software/pulseaudio/pavucontrol/pavucontrol-6.0.tar.xz

cd pavucontrol-6.0

mkdir build
cd build

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain -Dlynx=false ../

[-fno-rtti fails]

ninja [0m 28.05s]
sudo ninja install

pavucontrol 6.0

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