tce-load -i intltool networkmanager-dev libsecret-dev gtk3-dev automake libtool-dev gettext-dev

cd NetworkManager-openvpn-1.0.2

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/NetworkManager

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

make
sudo make install