Apple Mach -O Linker (Id) Error?

Question

I am trying to build this xcode workspace which was built from Unity. And after modifying the project a little bit when I getting to the very end of building the project (li

Answer 1

For me it was missing frameworks. Try searching the errors you get on Google and find out which frameworks they're part of, then import them in the Build phases tab.

Answer 2

For me the scenario was that I removed one of the dependency in my pods which was not required, after removing it I was getting error that the same dependency not found. So I went to delete its entry from the Project >> Build Settings >> other Linker Flags and then selected the same and deleted it as shown below in the Image. After removing from the linker Flags I started getting the Apple Mach -O Linker (Id) Error? and after trying everything for a day I realised the issue lies inside the linker Flags. Where on deleting any dependecy you have to delete the other line name -framework. you can check the below image to get the clarity.

So I suggest to keep an eye on it while deleting the dependecy from the linker flags, do delete the associated -framework too which lies below the dependency name. In my case it was ObjectMapper

Answer 3

I added libstdc++.tbd to "BuildPhases >> Link Binary With Libraries". It works for me.

Answer 4

I was having the same issue, and resolved by

1. installing the latest CocoaPods
2. then do pod setup

Answer 5

Another possible cause is if you rename one of your targets (why did I do that?) and you're using pods. You end up with a version of your old target name in the Frameworks folder in your main project (not the Pods project), like pods_oldtarget_framework which no longer exists.

Just delete the old version (or name your target back to it's original and delete the new one), and you should be good to go.

Answer 6

For me I had the problem because I was using Xcode 9 (beta), then I open the same project with another Xcode 8.3. To solve the problem for me just Clean then Run again.