Main site seems to be gone

https://launchpadlibrarian.net/7597480/libglpng_1.45.orig.tar.gz

<code>
cd src
sed -i "s$\"png/png.h\"$<png.h>$" glpng.c
gcc -shared -Wl,-soname,libglpng.so -o libglpng.so -pipe -Wall -W -O2 -fno-strength-reduce glpng.c -lpng -lGL
</code>

<code>
install -m 0755 libglpng.so /usr/lib/
install -m 0644 ../include/GL/glpng.h /usr/include/GL/
</code>