How to decrease build times / speed up compile time in Xcode?

Question

What strategies can be used in general to decrease build times for any Xcode project? I\'m mostly interested in Xcode specific strategies.

I\'m doi

Answer 1

I switched to Hackintosh with a 5960x CPU, overclocked to 4.4GHz only to bring down Xcode compile time. That's 8 cores and 16 threads. Total cost $3000 for a computer that crushes all macs. However I've spent at least 10 days getting it set up, first with Yosemite, the. I had six months downtime when I couldn't update macOS while Xcode required a newer os. I just got it running sierra and life is good again.

My 2,8 GHz i7 double core 16 GB RAM MacBook Pro compiles my project in 75 seconds, the Hackintosh in 20 seconds. (Swift, dlib, opencv c++ in the project)

However the biggest problem is Xcode doesn't seem to use multiple threads when compiling swift. This is the bottleneck, I hope they will fix it soon.