How to pass command line argument to Xcode based on build configuration

Question

I would like to add the -FIRDebugEnabled argument to enable the debug view on the Firebase console but only when it is a debug or staging build.

I have tried adding CommandLine.arguments.append("-FIRDebugEnabled") in application didFinishLaunchingWithOptions but this does not seem to work, so I think I need to add it during a Build phase or a pre-action in the release scheme. But I can't figure it out.

Thanks in advance!

@andlin yes that is an option but as I work in an agency we don't want to think about it on every project when making builds. Thats why I would like a code block or script that handles it for us to reduce human error. — Bob De Kort
– Bob De Kort, Commented Apr 9, 2019 at 11:31

rodskagg · Accepted Answer · 2019-04-09 11:50:02Z

10

If I understand things correctly, launch arguments added to a scheme are only set when building the app from within Xcode directly to a device or the simulator. If you wish to set FIRDebugEnabled in other cases (so that it's also set when the user launches the app on the actual device), maybe this will work:

var newArguments = ProcessInfo.processInfo.arguments
newArguments.append("-FIRDebugEnabled")
ProcessInfo.processInfo.setValue(newArguments, forKey: "arguments")

answered Apr 9, 2019 at 11:50

rodskagg

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Bob De Kort Over a year ago

Awesome! That seems to work, just need to wrap it in #if DEBUG || STAGING and its exactly what I wanted. Thanks @andlin

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