Linking error with CocosDenshion - duplicate symbol

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Linking error with CocosDenshion - duplicate symbol

(10 posts) (3 voices)

Started 2 years ago by iisystems
Latest reply from Steve Oldmeadow

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iisystems
Member

I'm sure there is a simple solution to this, but I cannot find it. I am just now adding sound support to my 0.81-based app. Since I have a lot of code & resources, I am hoping to not have to recreate the project (originally back in the 0.63 or so timeframe). My project was fine until I tried to add CocosDenshion. I created a new target "CocosDension" and added the same files to it as the cocos2d proejct itself has. This seems fine as it builds a libCocosDenshion.a without errors. In the Info on that static lib, I added my app as a Target and then I added the CocosDension target under my app. This is the same setup as I'm using for the cocos2d, Chipmunk and cocosLive targets, so it seems right to this point (to me).

However, when I try to build, I get a linker error saying:
duplicate symbol _loadWaveAudioData in /iPhone Development/MyGame/build/Release-iphoneos/libCocosDenshion.a(CocosDenshion.o) and /iPhone Development/OilSlicker/build/MyGame.build/Release-iphoneos/MyGame.build/Objects-normal/armv6/CocosDenshion.o

I have tried cleaning and rebuilding from scratch, but to no avail.

Has anyone else come across this problem or maybe knows how to resolve the duplicate symbol?

Thanks very much!

Posted 2 years ago #
iisystems
Member

Sorry, that was meant to say:

duplicate symbol _loadWaveAudioData in /iPhone Development/MyGame/build/Release-iphoneos/libCocosDenshion.a(CocosDenshion.o) and /iPhone Development/MyGame/build/MyGame.build/Release-iphoneos/MyGame.build/Objects-normal/armv6/CocosDenshion.o

The name of my game is OilSlicker; was trying to keep the post generic, but missed one string replacement...

Posted 2 years ago #
Steve Oldmeadow
Administrator

Usually when something like this happens a file has been added multiple times to the project. There is also no reason you have to build a static lib for CocosDenshion, you can just add the files directly to your project.

Posted 2 years ago #

iisystems
Member

Steve,

Thanks for the reply. I tried originally just adding the files (simpler is better!), but I got 38 linking errors then (sorry about the long post):

"_alSourcePlay", referenced from:
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		  "_AudioSessionSetProperty", referenced from:
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDSoundEngine init:channelGroupTotal:audioSessionCategory:] in CocosDenshion.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		  "_alcMakeContextCurrent", referenced from:
		      -[CDAudioManager audioSessionInterrupted] in CDAudioManager.o
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		      -[CDSoundEngine audioSessionInterrupted] in CocosDenshion.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		  "_alSourcef", referenced from:
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSourceWrapper setPitch:] in CocosDenshion.o
		      -[CDSourceWrapper setGain:] in CocosDenshion.o
		  "_alSourcei", referenced from:
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSourceWrapper setLooping:] in CocosDenshion.o
		  "_alGetListenerf", referenced from:
		      -[CDSoundEngine masterGain] in CocosDenshion.o
		  "_alListenerf", referenced from:
		      -[CDSoundEngine setMasterGain:] in CocosDenshion.o
		  "_AudioFileReadBytes", referenced from:
		      _loadWaveAudioData in CocosDenshion.o
		  "_alBufferData", referenced from:
		      -[CDSoundEngine loadBuffer:filePath:] in CocosDenshion.o
		  "_alSourceStop", referenced from:
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSoundEngine stopChannelGroup:] in CocosDenshion.o
		      -[CDSoundEngine stopSound:] in CocosDenshion.o
		  "_alcGetContextsDevice", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		  "_alcCreateContext", referenced from:
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		  "_ExtAudioFileSetProperty", referenced from:
		      _loadCafAudioData in CocosDenshion.o
		  "_AudioSessionGetProperty", referenced from:
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		  "_alcDestroyContext", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		  "_AudioSessionSetActive", referenced from:
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDAudioManager audioSessionInterrupted] in CDAudioManager.o
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDSoundEngine audioSessionInterrupted] in CocosDenshion.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		  "_alGenSources", referenced from:
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		  "_alSourcefv", referenced from:
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSourceWrapper setPan:] in CocosDenshion.o
		  "_alDeleteSources", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		  "_alcCloseDevice", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		  "_alGenBuffers", referenced from:
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		  "_OBJC_CLASS_$_AVAudioPlayer", referenced from:
		      __objc_classrefs__DATA@0 in CDAudioManager.o
		  "_alDeleteBuffers", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		  "_ExtAudioFileGetProperty", referenced from:
		      _loadCafAudioData in CocosDenshion.o
		      _loadCafAudioData in CocosDenshion.o
		  "_alGetSourcei", referenced from:
		      -[CDSoundEngine playSound:channelGroupId:pitch:pan:gain:loop:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSourceWrapper isPlaying] in CocosDenshion.o
		  "_AudioSessionInitialize", referenced from:
		      -[CDAudioManager init:channelGroupDefinitions:channelGroupTotal:] in CDAudioManager.o
		      -[CDSoundEngine init:channelGroupTotal:audioSessionCategory:] in CocosDenshion.o
		  "_AudioFileClose", referenced from:
		      _loadWaveAudioData in CocosDenshion.o
		  "_AudioFileOpenURL", referenced from:
		      _loadWaveAudioData in CocosDenshion.o
		  "_ExtAudioFileRead", referenced from:
		      _loadCafAudioData in CocosDenshion.o
		  "_alGetError", referenced from:
		      -[CDAudioManager audioSessionInterrupted] in CDAudioManager.o
		      -[CDAudioManager audioSessionInterrupted] in CDAudioManager.o
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine unloadBuffer:] in CocosDenshion.o
		      -[CDSoundEngine loadBuffer:filePath:] in CocosDenshion.o
		      -[CDSoundEngine loadBuffer:filePath:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSoundEngine _startSound:channelId:pitchVal:panVal:gainVal:looping:checkState:] in CocosDenshion.o
		      -[CDSoundEngine audioSessionInterrupted] in CocosDenshion.o
		      -[CDSoundEngine audioSessionInterrupted] in CocosDenshion.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		  "_alcOpenDevice", referenced from:
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		  "_alcGetCurrentContext", referenced from:
		      -[CDSoundEngine dealloc] in CocosDenshion.o
		  "_ExtAudioFileOpenURL", referenced from:
		      _loadCafAudioData in CocosDenshion.o
		  "_alcSuspendContext", referenced from:
		      -[CDAudioManager audioSessionInterrupted] in CDAudioManager.o
		      -[CDSoundEngine audioSessionInterrupted] in CocosDenshion.o
		  "_alDistanceModel", referenced from:
		      -[CDSoundEngine _initOpenAL] in CocosDenshion.o
		  "_alcProcessContext", referenced from:
		      -[CDAudioManager audioSessionResumed] in CDAudioManager.o
		      -[CDSoundEngine audioSessionResumed] in CocosDenshion.o
		  "_AudioFileGetProperty", referenced from:
		      _loadWaveAudioData in CocosDenshion.o
		      _loadWaveAudioData in CocosDenshion.o
		  "_ExtAudioFileDispose", referenced from:
		      _loadCafAudioData in CocosDenshion.o
		ld: symbol(s) not found
		collect2: ld returned 1 exit status
Build failed (38 errors)

And you're right that there were duplicate files -- the CocosDenshion files were added to my game Target and then also linked in as the static lib (I forgot to remove the original references once it wasn't working. However, once I did remove them, I'm right back to the 38-error scenario.

Posted 2 years ago #

Steve Oldmeadow
Administrator

http://www.cocos2d-iphone.org/wiki/doku.php/cocosdenshion:faq

Posted 2 years ago #
iisystems
Member

Thanks Steve... really sorry-- I didn't realize there was a separate FAQ to CocosDenshion. The problem ended up being missing frameworks that I needed to add.

Thanks very much!

Posted 2 years ago #
mikejstein
Member

I'm having the same linking error. The first time I saw it, I thought I'd messed something up in my set up. So, I tried from a completely clean test program, built with the Cocos2D template that 0.9.0-Beta comes with. I'm still getting the exact same problem.

I've already tried deleting and re-adding the AudioToolbox, OpenAL, and AVFoundation frameworks.

Any ideas?

Posted 2 years ago #
Steve Oldmeadow
Administrator

^ did you try looking in the FAQ that I referred to above?

Posted 2 years ago #
mikejstein
Member

I've looked at the faq, but it hasn't helped me. I've got all the frameworks, and I don't see any doubly added classes.
And, again to be safe, I tried out a totally clean project using the provided Cocos2D template, and hit the same problem.

Posted 2 years ago #
Steve Oldmeadow
Administrator

Did you look at this link from the FAQ?

http://cowboyprogramming.com/2009/03/20/iphone-openal-linking-problem/

Also - if you want my help then follow the general troubleshooting steps that are detailed in the FAQ i.e the first step is to try to build the CocosDenshionDemo project.

Posted 2 years ago #

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