Yes, definitely. The architectures are different so different compilation
should be done to run natively.

It may be worthwhile to see if they can run a SLES x86_64 VM on their
Z-series box for your application.

You could also take this opportunity to write the application in something
less platform-specific. I know that's probably not a huge value-add for
you, but it's an option that may help you reach other customers too.

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Good luck.

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