Just back from vacation, I'm trying to update my Xcode development
environment for Foundation to the latest levels.
With Xcode 9 beta 2, swift.org DEVELOPMENT-SNAPSHOT-2017-06-26-a, and
latest master of swift-corelibs-foundation and swift-corelibs-xctest the
build fails in the SwiftXCTest target with:
<unknown>:0: error: unknown argument: '-index-store-path'
failed with exit code 1
It looks like the -index-store-path option has been removed from the
compiler recently, but is still being referred to somewhere. I have poked
around but can't see where this option is coming from.
The full option being passed to the compiler is -index-store-path
Can anyone advise?