"404 duplicate symbols"

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Created Dec ’24

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Hi folks:

I see previous chatter re this linker error message here on the forums and out in the wild, but I haven't been able to figure out where or how to track down the details necessary to resolve. For background, I've had iOS apps in the AppStore since 2021. They're fine, but, I want to update them for newer iOS releases, and use Catalyst to create MacOS versions. After updating to Xcode 15.2 but without changing the code, these apps no longer compile. "404 duplicate symbols" linker error. Update the Cocoapods and frameworks: same. Very difficult to find details in Xcode - it would be great if the error message took one to exact sources, but clicking the error does nothing. Added the -v flag with no change. From Internet chatter this behavior seems to be new in 15.x. I would imagine some of you have overcome this before now. How do I resolve it and get back to work?

Thanks so much,

--Mark

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Answer 1

DTS Engineer OP

Apple

Dec ’24

Can you share a link to a place where you've shared the complete build report with these error messages? To collect the full build report in Xcode:

Choose View > Navigators > Reports.
Select the report associated with your app’s build in the navigator.
Using the filter bar at the top of the build report, select the filter buttons for All and All Messages.
Click Export in the filter bar to save the detailed build report.

—Ed Ford,  DTS Engineer

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