Run tests with rosetta in ios simulator from command line

Question

tcostasouza OP

Created May ’23

Replies 2

Boosts 1

Views 2.6k

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Hello everyone,

I am currently building a swift library that has a technical limitation of running tests in iOS Simulator with Rosetta only (since it depends on a library that can only, for now, build it for iOS Simulator x86_64).

Currently, I can run this swift library tests in XCode with an iPhone Rosetta target, but I want to understand how to run these tests from the command line. I am not an expert in xcodebuild tool, so if anyone can help me, I would appreciate a lot.

I have tried, without success, running:

 xcodebuild -scheme MyLibrary -destination &#039;platform=iOS Simulator,name=iPhone 14&#039; -derivedDataPath build -verbose EXCLUDED_ARCHS=arm64 VALID_ARCHS=x86_64 ONLY_ACTIVE_ARCH=NO test

In which I get an error similar to:

xctest (17305) encountered an error (Failed to load the test bundle. If you believe this error represents a bug, please attach the result bundle at [...] MyLibraryTests&#039; (mach-o file, but is an incompatible architecture (have &#039;x86_64&#039;, need &#039;arm64&#039;))))

I suspect it's not running xctest with arch -x86_64. So I have also tried:

 arch -x86_64 xcodebuild -scheme MyLibrary -destination &#039;platform=iOS Simulator,name=iPhone 14&#039; -derivedDataPath build -verbose EXCLUDED_ARCHS=arm64 VALID_ARCHS=x86_64 ONLY_ACTIVE_ARCH=NO test

But result is the same.

I want to understand what is the command that XCode runs the tests in iOS Simulator with Rosetta. Other IDEs prints the command line used, but I could not find any setting that would tell XCode to print it.

Any help appreciated.

Thanks in advance, --Thiago

Boost

Answer 1

anders.u OP

May ’23

You can achieve it on Xcode 14.3 by specifying arch=x86_64 in the destination. But be aware that this sadly makes xcodebuild ignore all the other destination constraints you specify and the first found simulator will be used :-(

-destination &#039;platform=iOS Simulator,name=iPhone 14,arch=x86_64&#039;

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Answer 2

tcostasouza OP

May ’23

I've tried that initially, but it doesn't works for me. None of the available destinations specifies an arch attribute and when I set this it actually selects all destinations available for testing.

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