Building UE5.4 with Xcode 16

Development Platform & Builds Mobile
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We are running on Unreal Engine 5.4 and releasing on mobile. April 24th is the deadline for switching over to XCode 16/iOS 18 in order to keep releasing on the app store. I’d like to know what changes are required/that people have had to make in order to support the update. We increased the version in the Apple_SDK.json and converted quite a few previous warnings-as-errors back to warnings (at least temporarily) in ClangWarnings.cs:

Arguments.Add(“-Wno-error=shorten-64-to-32”);

Arguments.Add(“-Wno-error=extra-qualification”);

Arguments.Add(“-Wno-error=missing-template-arg-list-after-template-kw”);

Arguments.Add(“-Wno-error=vla-cxx-extension”);

Arguments.Add(“-Wno-error=format-truncation”);

but it seems there is more work to do on our end, building from xcode is producing a build that launches to a black screen and seems to be missing the uproject and our comman

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Steps to Reproduce
Update Apple_SDK.json:

{

// Xcode versions

“MainVersion”: “14.1”,

“MinVersion”: “14.1.0”,

“MaxVersion”: “16.9.0”,

// The versions on Windows are iTunes versions

“MinVersion_Win64”: “1100.0.0.0”,

“MaxVersion_Win64”: “8999.0”

}

Run on latest macosx (sequoia) with xcode 16.3

3

Hi Richard,

You should be able to target 5.4 out of the box with Xcode 16.2 (it can be downloaded on the Apple Developer site Unauthorized - Apple Developer). 16.3 unfortunately includes a major versoin update to Clang (16 to 17) which adds a lot of new warnings and various other issues. I’ll point you to a mainline CL that brings 16.3 compliance once it goes though on our end.

Best regards.

4

Great, thank you :slight_smile:

5

Any update on this?