“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift."

Question

Ever since I\'ve updated to Xcode 8.2 (GM seed, from the App Store), I have been stuck at the following error:

Use Legacy Swift Language Version” (SWIFT_V

Answer 1

I had a same problem in yesterday. Fix step:

1. Build settings -> search swift, choice use legacy swift language version

2. Toggled no to yes -> build. You will get more error.

3. Back toggled yes to no. build -> success!

Sometime apple make us to be come so crazy :)

All done.