pkg-config files

[Alex Merry]

How much do we care about users of frameworks who don't use CMake?  Do
we want to provide pkg-config files?  How easy is it to do so?

(My personal answers would be: enough to put in a little effort, but not
a huge one; yes, if it's easy; there is probably a helpful macro, and if
not ECM would benefit from one).

Alex

PS: I'm just throwing out things while I think of them, but these
questions don't need to be answered before TP1 :-)