Addition of a build system generator

[elfring]

I suggest to reuse a higher level build system than your current small make file so that powerful checks for software features will become easier.

• CMake
• Autotools

[e-n-f]

The Makefile is already more complicated than I want it to be, actually. I'd like to get rid of the pkg-config stuff and just say -lpng if I could get away with it.

[elfring]

Are you interested in portable make files?
How do you think about to improve software portability by feature checks?

[e-n-f]

No, I would in general like to depend only on facilities that exist on any reasonably modern Unix system.

[elfring]

There are some variations to consider for implementation details to be safe ...

[e-n-f]

As far as I know, everything I am doing is platform-neutral for the platforms I am targeting.

[elfring]

Does a tool like "autoscan" show any software dependencies that you find worth for further considerations?