Condition #if DEBUG else if PRODUCTION not working in Swift

Question

I am trying to use different environments for my application but facing issues doing it. It's not the case that debug is not working the case is none of the variables are working.

I am attaching a screenshot which will make it easier to understand what is happening.

I am not able to access any of the environments.

I ran this code in viewDidLoad of initial view controller of my application and last else condition gets executed.

#if DEBUG
    print("Environment is debug")
    #elseif debug
    print("Environment is debug")
    #elseif Debug
    print("Environment is Debug")
    #elseif RELEASE
    print("Release")
    #elseif PRODUCTION
    print("Environment is production")
    #elseif PROD
    print("Environment is PROD")
    #else
    print("Environment is can't find")
#endif

Adding few more images for better clarity regarding schemes and Xcode settings.

tell more about _how_ and _where_ you'd define the compiler flags...? — holex, Nov 15 '19 at 11:40
I had added screenshots regarding the compiler flags and configuration. — user3745635, Nov 15 '19 at 12:04
There are two schemes in project projectName and projectName-debug but none of them is giving the desired results. — user3745635, Nov 15 '19 at 12:05
Possible duplicate of [Xcode / iOS: How to determine whether code is running in DEBUG / RELEASE build?](https://stackoverflow.com/questions/9063100/xcode-ios-how-to-determine-whether-code-is-running-in-debug-release-build) — Faysal Ahmed, Nov 15 '19 at 12:51

score 31 · Answer 1 · answered Sep 16 '20 at 18:53

31

In my case the issue was solved by adding DEBUG as the debug Active Compilation Condition. I know it's already specified when you create a new project, but I don't remember if me or another team's member removed it (and why!). So I decided to put it here just in case someone else is facing the same scenario

answered Sep 16 '20 at 18:53

mauricioconde

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this should be the accepted answer. It's what Xcode does by default. – Dan Rosenstark Mar 13 '23 at 16:39

score 18 · Accepted Answer · answered Nov 15 '19 at 12:58

I did research and setting compiler flags solved the problem.

Earlier they were blank and the way Xcode UI is I got confused how to edit them they looked disabled.

So what you have to do is double tap on the side of the flags or press enter and add the following values as I had attached the screenshot below.

CZ54 · Answer 3 · 2019-11-28T09:21:00.283

9

DEBUG is the only default swift flag on a new project. You can create your own in your project build settings, Other Swift Flags.

Otherwise:

#if DEBUG
 // This code will be run while installing from Xcode
#else
// This code will be run from AppStore, Adhoc ... 
#endif

edited Nov 28 '19 at 09:21

answered Nov 15 '19 at 11:39

CZ54

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3

My project was written in Obj-C and Swift has been added. In my case, the DEBUG flag was not automatically created and had to be manually added. – Chuck Krutsinger Aug 11 '21 at 23:47

score 0 · Answer 4 · answered Mar 13 '23 at 16:40

0

Here's how the Build Settings are supposed to look for Swift & Objective-C. These are the settings that Xcode creates automatically, so if you're missing DEBUG you can add them again

answered Mar 13 '23 at 16:40

Dan Rosenstark

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Condition #if DEBUG else if PRODUCTION not working in Swift

4 Answers4

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