tce-load -i 

cd module-init-tools-3.15

DOCBOOKTOMAN=/bin/true 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 --enable-zlib-dynamic

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

make
sudo make install