tce-load -i compiletc meson xfce4-panel-dev libnotify-dev pulseaudio-dev libcanberra-dev keybinder-dev

wget https://archive.xfce.org/src/panel-plugins/xfce4-pulseaudio-plugin/0.5/xfce4-pulseaudio-plugin-0.5.1.tar.xz

cd xfce4-pulseaudio-plugin-0.5.1

mkdir build
cd build

CC="gcc -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" meson setup --prefix=/usr/local --localstatedir=/var --buildtype=plain

ninja [0m 7.39s]
sudo ninja install

xfce4-pulseaudio-plugin 0.5.1

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