Cannot find 'TARGET_OS_SIMULATOR' in scope

Question

bastiaan-tromp-caxton-io OP

Created Apr ’25

Replies 2

Boosts 1

Views 1.3k

Participants 3

This code was compiling fine on Xcode 16.2

public var hasSecureHardware: Bool {
    let isSimulator = TARGET_OS_SIMULATOR == 1
    return !isSimulator && isAvailable
}

However, now the build breaks with the message:

Cannot find 'TARGET_OS_SIMULATOR' in scope

Boost

Answer 1

medef00 OP

Apr ’25

Hi, I fix this like that

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

0

Answer 2

DTS Engineer OP

Apple

Apr ’25

Xcode 16.3 contains changes to the TARGET_OS_* macros. The Xcode 16.3 Release Notes have the details for you,.

— Ed Ford,  DTS Engineer

0