tce-load -i compiletc meson gtk3-dev intltool vala-dev mpc-dev gtksourceview-dev libsoup-dev itstool

cd gnome-calculator-3.28.2

mkdir build
cd build

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --libexecdir=/usr/local/lib/gnome-calculator --buildtype=plain

ninja [0m 14.21s]
sudo ninja install