Compile Time Incredibly Slow

Question

My project consists of ~350 Swift files and ~40 cocoa pod dependencies.

As soon as the entire project was migrated to Swift 3, build times have been <

Answer 1

SWIFT_WHOLE_MODULE_OPTIMIZATION = YES

Xcode version: 8.1 GM

To add choose your target, then go to Editor > Add Build Setting > Add User-Defined Setting, and add the above.

My clean build time dropped from 35 mins (Ahem, excuse me) to 8 mins with a project file count of 800.

Note: Tried this on Xcode 8.0 first, but didn't work.