I am stuck into errors when using codeTimestamp classes to checkout speed of my code.
But these classes are working on any other project. I don't know what happen to this.
Errors are:
Undefined symbols for architecture armv7:
"__Z25LogTimestampChunkInMethodPKciaa", referenced from:
-[EAGLView renderFrameQCAR] in EAGLView.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Thanks in advance for help, have a great day.
You know you have to set the -fno-obj-arc flag on that file, right?
Look in your EAGLView source file, and find where you use LogTimestampStartChunk. Is that the only file you added LogTimestampStartChunk to? If so then for whatever reason, the CodeTimeStamp.o is not being added to your Target. If you do have the LogTimestampStartChunk used in other files, comment it out of EAGLView and see if you can get it to build.
Ultimately, if you cannot use this macro in even one file and get the project to build, then you never included the CodeTimeStamp.o file. If you can get it to build otherwise, then its something about EAGLView.
Related
I'm trying to build a project that has ResearchKit in it, and whenever I build and run on a physical device (or the simulator, for that matter) it works fine. But when I attempt to Archive it, I get the following error:
Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_ORKVisualConsentStep", referenced from:
objc-class-ref in InformedConsent.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I followed the installation guidelines on the ResearchKit GitHub, and made sure to check that researchKit.framework was under the Frameworks, Libraries and Embedded Content section as well as the "Link Binary With Libraries" section of the build phases tab (as was described in this link as well as a couple others: Xcode build failure "Undefined symbols for architecture x86_64") but still nothing.
Is there something I'm doing wrong, or another setting I might be able to change?
UPDATE:
I noticed that the element that was throwing the error - ORKVisualConsentStep - was deprecated a few iOS versions ago. So by taking that out, I was able to get the project to archive.
I didn't want to put this as the accepted answer, though, because I wanted to see if there was a better solution than just deleting code.
Thanks for your help!
I want to use "springboard" framework , I have added that framework by drag and drop in xcode downloading from github.com , but when I want to run it I got some error :
Undefined symbols for architecture i386:
"_SBSCopyLocalizedApplicationNameForDisplayIdentifier", referenced
from:
-[ViewController getActiveApps] in ViewController.old: symbol(s) not found for architecture i386 clang: error: linker command
failed with exit code 1 (use -v to see invocation)
why this error any one have any idea. I think have some issue in "headersearch path" setting any one kindly say how to set this .
Thanks.
Having the headers is not enough, you have to link to the springboard binary as well.
However, I'm pretty sure the springboard is not available inside an application, so even if you get it to link, I'm pretty sure calling any springboard method will fail.
What you need to do to use springboard's methods is to make a mobile substrate extension.
I have the following failed code when i run my application on iPhone 5.1 simulator. My app runs smoothly before i add in the Facebook Connect into my application.
Undefined symbols for architecture i386:
"_FBCreateNonRetainingArray", referenced from:
-[FBSession initWithKey:secret:getSessionProxy:] in FBSession.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
May I know what can i do to get rid of this?
Thanks
2 things that usually get rid of that error.
1) go to: target > build phases > link binary with library -- make sure you've added the correct framework
2) go to: target > build phases > compile sources -- add any implementation files that are in your program but do not appear in that list.
Those two steps usually fix that kind of error.
I'm not sure exactly why i'm getting this. It usually comes because of a missing framework, except its mentioning a class I already have in my project, and imported into the file it's saying the error is on. It says...
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_ELCImagePickerController", referenced from:
objc-class-ref in JCreateViewController.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
JCreateViewController.m had this in the imports:
#import "ELCImagePickerController.h"
So i don't really know why it's giving me this error.
Any ideas?
In the interest of providing an acceptable answer, from the comments:
Make sure ELCImagePickerController is included in your project's Compile Sources build phase.
you can add resources to your projects build phases by simple select and add see this link
I am trying to build a simple torch application for iOS 5 as described in http://developer.apple.com/library/mac/releasenotes/AudioVideo/RN-AVFoundation/_index.html#//apple_ref/doc/uid/TP40010717-CH1-DontLinkElementID_17 but i am getting "Apple Match-O Linker Error:
Undefined symbols for architecture armv7:
"_AVMediaTypeVideo", referenced from:
-[FirstViewController viewDidLoad] in FirstViewController.o
"_OBJC_CLASS_$_AVCaptureDevice", referenced from:
objc-class-ref in FirstViewController.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Any help appreciated
Anybody ?
Additionally: it only happens when running the project, no errors if i just clean & Build, and the code completion detects the library.
Thanks
You might need to link your project with the AVFoundation framework first.
If you're already doing that, make sure you're building for armv7 and not just armv6.
Check it in your project settings > Target > Build Settings > Architecture
As simple as this:
Linker errors like this indicate that a symbol is missing when the app is being linked. Most system symbols like these, come from system frameworks. So, I was missing a framework in my project that contains AVCaptureDevice and AVMediaTypeVideo.
To solve it, i just added the AVFoundation framework following this tutorial: http://www.thinketg.com/Company/Blogs/11-03-20/Xcode_4_Tips_Adding_frameworks_to_your_project.aspx
Now it runs !