Duplicate symbols when including runtime via cocoapods

[adamawolf]

When I add

pod 'ProtocolBuffers', '1.2'

to an existing Podfile, all of the ProtocolBuffers runtime's .m files end up being included multiple times in Pods.xcodeproj's Build Phases->Compile Sources section. Deleting the duplicate .m files from this list fixes the issue.

An possible explanation is this Podfile uses the "link_with" directive with a list of two targets (one the main app target, and one is the test target).

E.g. we have something like:

link_with 'App', 'AppTests' 

[adamawolf]

This seems relevant, and probably points to your Cocoapods configuration as not being the issue.

CocoaPods/CocoaPods#1729

[adamawolf]

Scratch that, this does seem to be a protobuf-objc issue. Even doing a pod install with the simplest Podifle possible double includes the .m files:

platform :ios, '6.0'

xcodeproj 'TestProject/TestProject'

pod 'ProtocolBuffers', '1.2'

[alexeyxo]

Do you mean this?

echo -e "platform :ios , 6.0 \nlink_with '<YourAppTarget>', '<YourAppTarget_Test>' \npod 'ProtocolBuffers', '1.2.1' " > Podfile

[adamawolf]

For the most part... yes. Except there's no v1.2.1 available via cocoa pods, and using the echo command overwrites our existing Podfile. We simply add

pod 'ProtocolBuffers', '1.2'

to the existing Podfile file in the root of our project.

[adamawolf]

I'm not very knowledgeable about cocoapods spec files, but the problem seems to be your non-arc sub spec. I don't think it's doing what you want: when I include your cocoapod as

pod 'ProtocolBuffers/non-arc', '1.2.1'

I don't get duplicate .m files in the Compile Sources, and I simply get the normal arc versions of the files (so, for the time being this is a work around for getting the ARC version of the runtime vie cocoa pod).

I suspect the

"source_files": "src/runtime/Classes/*.{h,m}"

of the root podspec and of the non-arc subspec are aggregating and including all of the source files twice.

[alexeyxo]

version 1.2.2 is available now

-> ProtocolBuffers (1.2.2)
   Protocol Buffers for Objective-C
   pod 'ProtocolBuffers', '~> 1.2.2'
   - Homepage: http://protobuf.axo.io
   - Source:   https://github.com/alexeyxo/protobuf-objc.git
   - Versions: 1.2.2, 1.2.1, 1.2 [master repo]
   - Sub specs:
     - ProtocolBuffers/non-arc (1.2.2)

[adamawolf]

Confirming: v 1.2.2 does not have the duplicate symbol issue. Thanks Alexey!