Okay so i am trying to compile from the source on my opensuse linux installation under the gnome desktop and have seemed to run into a bit of a problem.

Anyways I ran the ./configure in my terminal and added software dependency's where they were missing such as SDL and gmake but after making sure that libpng is installed and the configure confirms so something goes wrong with it here is the output lines i am questioning shown in the following image:
checking for png_check_sig... no
configure: error: you need libpng to compile Armagetron.
I am compiling from source and have confirmed that i have the libpng installed on my os.
This is armagetronad version: 0.2.8.3.1