tce-load -wi compiletc git libtool-dev readline-dev autoconf automake dbus-dev coreutils

https://iwd.wiki.kernel.org/gettingstarted

git clone git://git.kernel.org/pub/scm/libs/ell/ell.git
git clone git://git.kernel.org/pub/scm/network/wireless/iwd.git
[now ell/ and iwd/ directories exist inside same parent directory]

cd iwd
./bootstrap

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 --localstatedir=/var --sysconfdir=/usr/local/etc --libexecdir=/usr/local/bin --disable-systemd-service --disable-manual-pages

sed -i 's/-O2//' Makefile

make [0m 51.80s]
sudo make install