What is causing this Crashlytics compile warning? (Auto-Linking supplied '...' framework linker option at '...' is not a dylib)

Question

Compiling my main target (not a test target like here) yields this error:

ld: warning: Auto-Linking supplied 
   '~/Documents/my_app/MyApp/Crashlytics.framework/Crashlytics', 
framework linker option at 
    ~/Documents/my_app/MyApp/Crashlytics.framework/Crashlytics 
is not a dylib

From this build command:

Ld /Build/Products/Debug-iphonesimulator/MyApp.app/MyApp normal i386 cd ~/Documents/my_app/MyApp export IPHONEOS_DEPLOYMENT_TARGET=8.0 export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.2.sdk -L~/Library/Developer/Xcode/DerivedData/MyApp-dbmrsjmskpqxmnegayfzfxgcwvsm/Build/Products/Debug-iphonesimulator -F~/Library/Developer/Xcode/DerivedData/MyApp-dbmrsjmskpqxmnegayfzfxgcwvsm/Build/Products/Debug-iphonesimulator -F~/Documents/my_app/MyApp -filelist ~/Library/Developer/Xcode/DerivedData/MyApp-dbmrsjmskpqxmnegayfzfxgcwvsm/Build/Intermediates/MyApp.build/Debug-iphonesimulator/MyApp.build/Objects-normal/i386/MyApp.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -objc_abi_version -Xlinker 2 -ObjC -lPods-CocoaLumberjack -lPods-Mantle -framework CFNetwork -framework Foundation -framework Security -framework SystemConfiguration -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=8.0 -framework CoreGraphics -lPods -framework MapKit -framework Fabric -lPods-MyApp -Xlinker -dependency_info -Xlinker ~/Library/Developer/Xcode/DerivedData/MyApp-dbmrsjmskpqxmnegayfzfxgcwvsm/Build/Intermediates/MyApp.build/Debug-iphonesimulator/MyApp.build/Objects-normal/i386/MyApp_dependency_info.dat -o ~/Library/Developer/Xcode/DerivedData/MyApp-dbmrsjmskpqxmnegayfzfxgcwvsm/Build/Products/Debug-iphonesimulator/MyApp.app/MyApp

Answer 1

The Missing Link:

This error is almost always produced by not having the binary linked to the library (In this case it would be the Crashlytics.framework):

Trying to build the target MyApp (which includes headers with #import <Crashlytics/Crashlytics.h> will produce the error:

ld: warning: Auto-Linking supplied '../../Crashlytics.framework/Crashlytics', framework linker option at ../../Crashlytics.framework/Crashlytics is not a dylib

Link the Framework:

Fortunately, it should be easy to fix the problem simply by dragging the Crashlytics.framework from the Frameworks folder in the project navigator into the list of Link Binary With Libraries or by using the +.

• Make sure you have your App selected/highlighted under Targets while doing this process.