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Editorial Team
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Asked: 2026-06-11T17:17:55+00:00

I updated my iphone4s and xcode to the latest yesterday. And I’m trying to

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I updated my iphone4s and xcode to the latest yesterday. And I’m trying to debug my app on my phone since my application uses hardware communication.
I’m using a third party library from Redpark(the company provides Dock to RS232 wire.)
While compiling, it gives an error 

ld: file is universal (2 slices) but does not contain a(n) armv7s slice:/Users/...../libRscMgrUniv.a for architecture armv7s
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Does anyone know how to solve this except waiting for Redpark to update there library?

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1 Answer

  1. Editorial Team

    You can simply disable the compilation of armv7s in your Build Settings, by replacing the $VALID_ARCHITECTURES (which evaluates to armv7 armv7s now) value by the explicit value armv7.

    Thus your application will only build for armv7 and not armv7s, so will not be fully optimized for the new iPhone5, but it will still run on iPhone 4 and 5 anyway (the armv7s processor of the iPhone 5 can execute armv7 applications, it is just not as optimized as with armv7s processor dedicated instructions)

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