tce-load -i compiletc wvstreams-dev bash

cd wvdial-1.6.1

edit Makefile
PPPDIR=/usr/local/etc/ppp/peers

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

make CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti"
sudo make install