I got stuck at this point for day. I'm trying to build my old project on iOS using Unity 5.3.1f1 (old Unity version was 4.2.0), Xcode 6.1 + iOS SDK 8.1. Got the following error. I fixed all compiling errors but cannot get through these issues. Thanks in advance!
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Undefined symbols for architecture armv7:
"_ga_sendEvent", referenced from:
_GoogleAnalyticsBinding_ga_sendEvent_m_796108308_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _GoogleAnalyticsBinding_ga_sendEvent_m_796108308_0)
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"_ga_init", referenced from:
_GoogleAnalyticsBinding_ga_init_m_945665034_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _GoogleAnalyticsBinding_ga_init_m_945665034_0)
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"_ga_dispatch", referenced from:
_GoogleAnalyticsBinding_ga_dispatch_m_1985977664_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _GoogleAnalyticsBinding_ga_dispatch_m_1985977664_0)
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"_facebook_publishAppInstall", referenced from:
_FacebookBinding_facebook_publishAppInstall_m_655880120_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _FacebookBinding_facebook_publishAppInstall_m_655880120_0)
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"_facebook_logout", referenced from:
_FacebookBinding_facebook_logout_m_887460883_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _FacebookBinding_facebook_logout_m_887460883_0)
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"_facebook_init", referenced from:
_FacebookBinding_facebook_init_m648079723_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _FacebookBinding_facebook_init_m648079723_0)
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"_facebook_destroy", referenced from:
_FacebookBinding_facebook_destroy_m1785429721_0 in Bulk_Assembly-CSharp_8.o
(maybe you meant: _FacebookBinding_facebook_destroy_m1785429721_0)
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