Google Drive API for Objective-C with CocoaPods not linking GTMOAuth2 and - google-drive-api

Question

I am trying to incorporate Google Drive API into my Objective-C app. I'm using this link. I setup the quickstart example and that works fine. For my app, I added the API using CocoaPods as directed. When I run the app, I get linker errors not finding GTMOAuth2, GTMSessionFetcher and GoogleAPIClient. Here is one example.
ld: warning: directory not found for option '-L/Users/k/Library/Developer/Xcode/DerivedData/DA/dntvfajcuzknsddygndaenxbqsii/Build/Products/Debug-iphonesimulator/GTMOAuth2'
Under Target->Build settings -> other linker flags
-ObjC -l"GTMOAuth2" -l"GTMSessionFetcher" -l"GoogleAPIClient" -framework "Security" -framework "SystemConfiguration" -lz
for run path search paths, I have #executable/Frameworks
Can some provide info on how to probably setup Xcode so it finds GTMOAuth2, GTMSessionFetcher and GoogleAPIClient that are setup by the CocoaPods.

Answer 1

You may want to try the installation process as discussed in Install a Google SDK using CocoaPods or in Google APIs for iOS which gives the following steps in adding a Google SDK to your iOS app:
CocoaPods is used to install and manage dependencies in existing Xcode projects.
Create an Xcode project, and save it to your local machine.
Create a file named Podfile in your project directory. This file defines your project's dependencies, and is commonly referred to as a Podspec.
Open Podfile, and add your dependencies.
Save the file.
Open a terminal and cd to the directory containing the Podfile.
Run the pod install command. This will install the SDKs specified in the Podspec, along with any dependencies they may have.
Open your app's .xcworkspace file to launch Xcode. Use this file for all development on your app.
Please also check the list of CocoaPods published by Google.
Furthermore, you may want to continue the setup using the approaches to add the library to your project as discussed in this GitHub post such as using GTM OAuth2 or Google Sign-In SDK and adding the framework to an Xcode project.
Lastly, to help you troubleshoot problems during installation, you may visit this guide.