tce-load -i compiletc meson dbus-dev vala-dev 

wget https://download.gnome.org/sources/dconf/0.40/dconf-0.40.0.tar.xz

cd dconf-0.40.0

mkdir build
cd build

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --libexecdir=/usr/local/lib/dconf --buildtype=plain -Dbash_completion=false -Dman=false

ninja [0m 7.39s]
sudo ninja install