The review of SE-0181: Package Manager C/C++ Language Standard Support ran from July 11...14, 2017. The proposal has been accepted for Swift 4.
There was support for the general feature, with some discussion of the spelling. We chose to accept the proposal mostly unmodified:
1. While we agreed the enum cases could have simpler spellings, we felt this would require substantial design with little practical benefit (at this time, we will consider this for our future build setting proposal).
2. We agreed with feedback that using `cLanguageStandard`, etc in place of `cStandard` was more consistent, and will adopt that revision.
Thank you to everyone who participated!