Cannot find 'TARGET_OS_SIMULATOR' in the scope

Question

Created Apr ’25

Replies 2

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I tried to build the project with Xcode 16.3 and I initially got an error that TARGET_IPHONE_SIMULATOR does not exist, then I changed this flag to TARGET_OS_SIMULATOR, but it did not solve the problem

Answered by DTS Engineer in 832937022

You’re definitely on the right track here. TARGET_OS_SIMULATOR is the correct choice for C-based language but it’s best to avoid it in Swift. Rather, use targetEnvironment(simulator).

Why do you care about the difference between the Apple silicon on Intel simulators?

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—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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Answer 1

medef00 OP

Apr ’25

I fix like this

#if targetEnvironment(simulator)
let isARMSimulator: Bool
#if arch(arm64)
isARMSimulator = true
#else
isARMSimulator = false
#endif
#else
let isARMSimulator = false
#endif

1

Answer 2

DTS Engineer OP

Apple

Apr ’25

Recommended

You’re definitely on the right track here. TARGET_OS_SIMULATOR is the correct choice for C-based language but it’s best to avoid it in Swift. Rather, use targetEnvironment(simulator).

Why do you care about the difference between the Apple silicon on Intel simulators?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0