> Define reasonable. For me, that’s just 1 single spot. But it seems
> the Linux people are very insistent on Freedom meaning do what you
> want, even if it's against the build suggestions.
> I say stick to one hardcoded path, and make everyone else stop doing
> it their own way, and stick to one simple, consistent solution.

Two possible guides are:

Linux Standard Base <http://www.linuxfoundation.org/collaborate/workgroups/lsb>

and

Filesystem Hierarchy Standard <http://proton.pathname.com/fhs/>