59 duplicate symbols for architecture x86_64

Question

I am new to iOS programming.So I am not getting how to fix this error. I am using Xcode 7.2.1.While building my app I am getting this duplicate symbol _OBJC_IVAR_$_ECPercentDrivenInteractiveTransition._transitionContext in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECPercentDrivenInteractiveTransition._animationController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_CLASS_$_ECPercentDrivenInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_METACLASS_$_ECPercentDrivenInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECPercentDrivenInteractiveTransition._isActive in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECPercentDrivenInteractiveTransition._percentComplete in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECPercentDrivenInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECPercentDrivenInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingAnimationController._coordinatorAnimations in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingAnimationController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingAnimationController.o) duplicate symbol _OBJC_CLASS_$_ECSlidingAnimationController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingAnimationController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingAnimationController.o) duplicate symbol _OBJC_METACLASS_$_ECSlidingAnimationController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingAnimationController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingAnimationController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingAnimationController._coordinatorCompletion in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingAnimationController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingAnimationController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingAnimationController._defaultTransitionDuration in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingAnimationController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingAnimationController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingInteractiveTransition._positiveLeftToRight in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingInteractiveTransition._slidingViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_CLASS_$_ECSlidingInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_METACLASS_$_ECSlidingInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingInteractiveTransition._fullWidth in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingInteractiveTransition._currentPercentage in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingInteractiveTransition._coordinatorInteractionEnded in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingInteractiveTransition.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingInteractiveTransition.o) duplicate symbol _OBJC_IVAR_$_ECSlidingSegue._skipSettingTopViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingSegue.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingSegue.o) duplicate symbol _OBJC_IVAR_$_ECSlidingSegue._isUnwinding in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingSegue.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingSegue.o) duplicate symbol _OBJC_CLASS_$_ECSlidingSegue in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingSegue.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingSegue.o) duplicate symbol _OBJC_METACLASS_$_ECSlidingSegue in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingSegue.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingSegue.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._gestureView in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._anchorRightRevealAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._anchorLeftRevealAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._anchorRightPeekAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._preserveRightPeekAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._anchorLeftPeekAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._preserveLeftPeekAmount in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._transitionInProgress in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._coordinatorAnimations in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._customAnchoredGestures in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._underRightViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._underLeftViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._topViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_CLASS_$_ECSlidingViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_METACLASS_$_ECSlidingViewController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._currentAnimationController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._defaultAnimationController in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._customAnchoredGesturesViewMap in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._currentTopViewPosition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._currentInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._defaultInteractiveTransition in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._coordinatorCompletion in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._defaultTransitionDuration in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._currentOperation in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._isInteractive in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._animationComplete in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._delegate in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._resetTapGesture in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._panGesture in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._topViewAnchoredGesture in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._currentAnimationPercentage in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._isAnimated in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._transitionWasCancelled in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._coordinatorInteractionEnded in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._underRightViewControllerStoryboardId in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._underLeftViewControllerStoryboardId in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) duplicate symbol _OBJC_IVAR_$_ECSlidingViewController._topViewControllerStoryboardId in: /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Intermediates/iHealApp.build/Debug-iphonesimulator/iHealApp.build/Objects-normal/x86_64/ECSlidingViewController.o /Users/coders/Library/Developer/Xcode/DerivedData/iHealApp-ckstaumxwtiyvpgeursmlweqpdmq/Build/Products/Debug-iphonesimulator/libECSlidingViewController.a(ECSlidingViewController.o) ld: 59 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) Please help me how to fix this.

Answer 1

Check your compile sources in project target. There must be duplicate files, remove those and you are good to go.

project Targer -> Build phases -> compile sources