Error "library not found for" after putting application in AdMob

I am getting an error after I put my application in an AdMob. The app was working until today. The error is the following:

ld: library not found for -lGoogleAdMobAds
clang: error: linker command failed with exit code 1 (use -v to see invocation)

How can I fix this? Thank you.

I had a similar "library not found" issue. However it was because I accidentally was using the .xcodeproj file instead of the .xcworkspace file.

Sometimes you just remove the reference of the library and add reference again.

Apart from adding the Google Mobile Ads SDK and other libraries again from scratch, I would recommend you checking the Library Search Paths. There are instances when you copy or duplicate a target, Xcode decides that it needs to escape any double quotes " with a '\'. Make sure you remove all the \’s - it should look like this -

I was able to duplicate the error, by doing prefixing my path with multiple '\'.

Select your Target, go to "Build Phases" in "Link Binary With Libraries" remove ".a" file of that library. Clean and Build.

If error related to Cocoapods as follow:

library not found for -lPod-...

You need to check Other Linker Flags and remove it from there.

Extra Information: If you have an old project that uses cocoapods. And recently you needed to add the use_frameworks! to your podfile. cocoapods will not add the libraries to your Other Linker Flags anymore cause its inherited. Therefore, you may need to remove those manually from the other linker flags which they were added before using the use_frameworks!