[swift-users] Improving a simple C binding

[Jason Dusek]

On Wed, 9 Dec 2015 at 12:38 Max Howell max.howell at apple.com
<http://mailto:max.howell@apple.com> wrote:

> Another option would seem to be modelling the daylights out of build
> environments but I think this runs afoul of enumerations. Right now we have
> `os(Linux)` but we'd really need `os(Ubuntu)`, `os(RedHat)` and so forth to
> handle dependencies like these. And if people are working on a new distro
> -- or merely want a new platform tag even though they are on a stock distro
> -- this would fail unless they rebuilt the Swift compiler or package
> manager with an extended enumeration.
>
> Well, the module maps aren’t Swift so it wouldn’t work. Certainly we could
> allow some kind of #if syntax in module maps, but I think the elegance of
> one-file per platform will be enough and is much simpler.
>
Maybe I wasn’t clear here. This passage is about the platform names — how
do we keep discovery flexible? I’m assuming there is an enum somewhere — OSX,
Linux, iOS — in the compiler and what I’d like to suggest is, a centralized
registry like that will create maintenance headaches for maintainers and
frustrate developers, too. So taking one file per platform as a given, as
long as platform discovery is easily extended then porting libraries is
easy — add a new platform file, or even pass the “compatible platform” as
an option.

Thanks for your prompt reply.

Best Regards, Jason
​
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