tce-load -i lcms-dev

cd libmng-1.0.10

cp makefiles/makefile.linux Makefile
sed -i -e 's/unroll-loops/& -fPIC/' Makefile
find . -name Makefile -type f -exec sed -i 's/-O3/ /g' {} \;

Edit Makefile
CC=gcc
CC=gcc -flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe

make
sudo make install