tce-load -i intltool gobject-introspection-dev itstool gtk3-dev libxml2-dev libusb-dev gudev-lib-dev libsoup-dev libarchive-dev gtk-vnc-dev libvirt-glib-dev libosinfo-dev spice-gtk-dev tracker-dev vala-dev

cd gnome-boxes-3.22.0

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --libexecdir=/usr/local/lib/gnome-boxes -enable-vala

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make
sudo make install

        GNOME Boxes 3.22.0
        =================

        prefix:                   /usr/local
        c compiler:               gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe -g -O2 -w
        build from vala sources:  yes
        oVirt support:            no
        Installed tests:          no