tce-load -i compiletc 

https://downloads.sourceforge.net/potrace/potrace-1.16.tar.gz

cd potrace-1.16

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 --enable-a4 --enable-metric --with-libpotrace

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

make [0m 4.02s]
sudo make install