[dwidget]

While I agree that having one library could be a good solution, I don't think all those #ifdefs are wasted. There are a lot of legacy tech programs that use systems way older than I ever imagined would still be in use. There was a minor crisis at for an org I was working at one time where they were going to need to flip a multimillion dollar system because the only source of replacement parts was a hobbyist in his garage and for new gov compliance purposes that guy was going to need to become a cleared contractor supplier...which can be problematic if the person in question is an open source advocate whose main purpose in running this business in retirement is supplying enthusiasts rather than government departments or contractors.

I'm sure some of those systems and ones like it make plenty of use out of those #ifdefs though, and it's not just a handful of old fogey enthusiasts cramping everyone elses style. Established systems can't always evolve as fast as the general market.