问题
I was trying give bridging header in target -> Build settings -> Objective C Bridging header
I could able to do that using project created using Xcode 9
But I couldn't find Objective C Bridging header in Xcode 9.1. It is missing in project created in Xcode 9.1 like below.
回答1:
Make sure your build setting is selected as "All" and "Combined" look at below image
Click on above image for more clear. and just search "bridg" in search bar you will be see Objective C Bridging header.
来源：https://stackoverflow.com/questions/47473381/swift-compiler-general-is-missing-in-xcode-9-1