tce-load -i intltool gtk3-dev geocode-glib-dev gnome-desktop-dev libnotify-dev libcanberra-dev gnome-weather geoclue itstool

cd gnome-clocks-3.10.1

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

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

make
sudo make install

configure: error: Package requirements (
    gweather-3.0 >= 3.9.91
    geoclue-2.0 >= 1.99.3
) were not met:

    gnome-clocks 3.10.1

    prefix: /usr/local
    Vala compiler: valac
    C compiler: gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe -std=gnu99