Migrating 32bit iOS app to 64bit

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I am migrating my old iOS app code which was build in 32 bit Architecture. Now that Apple has removed support for that in OS11 I have to add support for 64bit. While doing so I am getting following error

Apple Mach-O Linker Error Group   "_OBJC_CLASS_$_GPPShare", referenced from:

I have old google plus SDK for sharing that as(filename: GPPShare.h)

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Ellen On

Xcode is not able to find GPPShare file as your sdk file must not be compatible with 64 bit architecture.Replace it with latest available framework for 64 bit support.