[vier]

Grow up. C programs are ported painfully to each operating system. This is the reality programming in C. If the author does not support your system, he simply has not spent the time to port it. Proper autoconf tests isn't going to magically make software run on BSDs because the proper test won't be apparent until the author attempts to compile on BSDs. Does it suck? Yes. Has it ever been any different? No.

[tjarratt]

I suspect you're going to get downvoted for saying this, but I'm going to upvote you and give people a reason to think about this.

If someone goes through the time to program in C and release their source code for free, shouldn't we be thankful, rather than being upset at their autoconf tests they haphazardly threw together? I can't imagine how people can see these as being completely necessary.