# Note: depends on zlib
wget -c http://downloads.sourceforge.net/project/libpng/libpng16/1.6.37/libpng-1.6.37.tar.xz
tar -xJf libpng-1.6.37.tar.xz
cd libpng-1.6.37
mkdir -p build
cd build
../configure --prefix="/usr"
make # Doesn't mind -j#
make install