Fix manual installation instructions

[warpling]

After many hours and the help of some friends I discovered the missing steps necessary to compile this library. Hopefully adding these can help save future devs some time and clarify how to use the library alongside Cocoapods :)

[msanders]

@warpling Sorry to hear that - thanks for adding clarification to the install instructions. I'll look into adding CocoaPods support if it makes installation easier for everyone familiar with it. Glad to hear you're interested in the library! Let me know if you have any other feedback.

[warpling]

Thanks for the quick merge @msanders. While I was able to get it to compile, I wasn't able to get it to run on device until just now due to the depended upon frameworks (Result.framework, etc) so I'm afraid these instructions still are not complete…

It seems the final necessary step might have been to manually include the 5 dependencies of TrueTime (in addition to TrueTime.framework) in the Embed Frameworks step in Build Phases. Sound right?

[msanders]

Ah, good point. It should only be necessary to link with Result.framework (the others are just used for tests), but that step is currently missing from the README. I believe you can also install this as a CocoaPod.

FWIW, I highly recommend trying out Carthage - it's possible to use this alongside Cocoapods, as it doesn't interfere with the project file, etc.

[warpling]

My project is in Obj-C and has dozens of dependencies so switching isn't an easy option, but I will definitely re-try it with Carthage if they can work side-by-side. Might be worth adding that to the README too?

[msanders]

👍 totally, thanks for the feedback. You should be able to get it working by following the steps listed here and here. Basically, just need to:

• Add a Cartfile in your repo containing instacart/TrueTime.swift.
• Run carthage bootstrap (which should implicitly build both TrueTime and Result).
• Add a separate build phase to link TrueTime and Result.

[warpling]

Could you clarify that last step? I assume you mean adding TrueTime.framework and Result.framework to Link Binary With Libraries?

[msanders]

Yep, just add a Run Scripts phase with the copy-frameworks script shown on step number 4 in the above link (which should be the same as a Link Binary With Libraries step only it adds a workaround for an app store submission bug).

[warpling]

Got it working thank you!! Fingers crossed it works for submission too.
(This sort of minutia is admittedly why I use pods; I like to be hands-off my build system as I tend to break it. 😅)