InstalledMACtools

Xcode is installed

Ports is installed from http://macports.org Available ports include http://www.macports.org/ports.php

on installing iutil:

I had to do the following to "help out" configure:

-> Install MacPorts from www.macports.org -> sudo port install libpng -> export CPPFLAGS="-I/opt/local/include" -> export LDFLAGS="-L/opt/local/lib"

./configure works now

I looked at the configure.ac file and nothing obvious jumps out to me why its not able to figure out where libPNG is. Perhaps /usr/local is not a "usual" place for it to be (It's been a while since I had to play with autoconf so my autoconf-ninja-skills are rusty)

To recognize something, you can use

   ocroscript recognize data/pages/alice_1.png