cd
cd cae
sudo apt install build-essential gcc-multilib zlib1g-dev:i386
wget https://www.hs-augsburg.de/homes/beckmanf/public/libpng-1.2.59.tar.gz
tar -xvzf libpng-1.2.59.tar.gz
cd libpng-1.2.59
CFLAGS='-m32' ./configure --libdir=/usr/lib/i386-linux-gnu
make
sudo make install
make clean
./configure --libdir=/usr/lib/x86_64-linux-gnu
make
sudo make install