Differentiate between two Xcode targets with Swift

How can I differentiate between two Xcode targets with Swift? The idea is to make a free and a paid version of an app with the same code base in Xcode.

With objective C I could use preprocessor macros but with Swift those are unavailable.

One way is to add Flags to target and use preprocessor. But the other way I think would be to use something like this

if Bundle.appTarget == "" { } else { }


extension Bundle {

public static var appVersion: String? {
return Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
}

public static var appBuild: String? {
return Bundle.main.object(forInfoDictionaryKey: kCFBundleVersionKey as String) as? String
}

public static func _version() -> String {
let dictionary = Bundle.main.infoDictionary!
let version = dictionary["CFBundleShortVersionString"] as! String
let build = dictionary["CFBundleVersion"] as! String
return "\(version) build \(build)"
}

public static var appTarget: String? {
if let targetName = Bundle.main.object(forInfoDictionaryKey: "CFBundleExecutable") as? String {
return targetName
}
return nil
}
}

Since Xcode 8 you can set the compilation conditions in the Build Settings for each target under **Active Compilation Conditions**.

[![Active Compilation Conditions Screenshot][1]][1]

With those set you can use:

#if FREE
//do something
#endif

For more details see the [i40west answer][2] and comments.


[1]:

[2]:

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In Xcode, go into the build configuration for a target. Find the section called **Swift Compiler - Custom Flags**, which contains a setting called **Other Swift Flags**.

Add a command-line flag for the compiler to add a flag, pretty much just like you’d do with the C compiler.

![Swift Compiler Flags][1]


[1]:

Now you’ve got `-D Something` being passed to the Swift compiler. In your Swift code, you can now do this:

#if Something
let foo = "bar"
#endif

It looks a lot like the C preprocessor, but unlike C, all code in all conditional sections has to be syntactically correct or the program won’t compile. So, you can set a flag on each target in the build settings and use them in your code.