I decided to make a separate target for my development app using Xcode 4.1. I duplicated the target, changed the bundle ID, made a new scheme. The original target was called "xxx" and the new one is "xxxDev".
The app builds, runs and debugs (sort of) correctly on the iPhone/iPad. Both versions; Dev and non-dev are on the iPhone. Only two problems:
1) when debugging, every so often xCode is not able to attach to the process it just launched.
2) I always get the warning
warning: Unable to read symbols for /Users/jon/Library/Developer/Xcode/DerivedData/xxx-eesunloavphkaraezppecayjklqw/Build/Products/Debug-iphoneos/xxx.app/xxxDev (file not found).
The file is correctly built under
/Users/jon/Library/Developer/Xcode/DerivedData/xxx-eesunloavphkaraezppecayjklqw/Build/Products/Debug-iphoneos/xxxDev.app/xxxDev
For some reason when running the debugger it is somehow holding on to the old build directory "xxx.app" and I can't find how I can change this. The scheme I am using points to the xxxDev.app executable.
I've grepped every possible file in the various directories and found nothing.
Does anyone have any ideas?
Got the same thing with XCode 4.2b5 last week-end. Reinstalling XCode did the trick for me.
I am getting the following error in my iPhone application:
warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found).
I found another stack overflow question which had a solution. So, I performed the following, as per that solution:
cd /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols
sudo ln -s ../../4.3.3\ \(8J2\)/Symbols/Developer/ Developer
And, the terminal returns:
ln: Developer: File exists
So the file exists? Or doesn't? Why am I getting this error in my iPhone application?
If you are running your app on a device, simply try uninstalling your app from your device, then turning off your device, then back on again. It just worked for me. :)
Uninstall the app and/or reset simulator.
I have spent quite a while on this issue. I haven't found a proper answer.
I upgraded my Xcode to 4.0.2 and sdk to 4.3. When I run my application on Device, 2 warnings appeared:
warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/System/Library/Frameworks/IOKit.framework/IOKit (file not found).
warning: Tried to remove a non-existent library: /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/System/Library/Frameworks/IOKit.framework/IOKit
I have tried to remove the entire directory of 4.3.3 (8j2) and re-fetched again in Organizer. However it didn't help at all.
I have IOKit file under /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/System/Library/Frameworks/IOKit.framework/Versions/A, after I copied the IOKit from directory "A" to IOKit.framework , the first warning gone, but the 2nd one still remained, and i do not think it is the proper way to solve this issue.
Anyone got any clue?
Thanks a lot!
It's just the debugger complaining, and unlikely to affect your debugging unless you're working with IOKit directly.
This won't stop the code from working, but I would report a bug to Apple.
This is the first time I've used the newest xcode (3.2.5) and the new iOS (4.2.1) and I'm getting the following run time error as soon as I run my application on my device:
Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found).
Does anyone have a cohesive answer to fix this? And yes I know there is another post on this topic, but it has not made any progress and there is not a clear cut answer.
Thanks!
What I just did to solve this problem was:
cd /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols
and created the symlink was missing:
ln -s ../../4.2\ \(8C134\)/Symbols/Developer/ Developer
It solves my problem.
I'll post it in the other question also.
I'm not sure what you've done to try to solve it, but here's what I'd do, retrying between each step:
If you have that path but don't have the file, get it from someone (I'll volunteer). I'm guessing it's not that easy, though. :)
Delete and reinstall Xcode.
Go to the Xcode Organizer and plug in your device, and let it authorize and download the 4.2.1 stuff.
Do you even have a directory like that? I don't have those subdirectories (I don't have a 4.2.1 (8C148) directory but I do have 4.2.1 (8C148a)) there. Under DeviceSupport/Latest/ I have those subdirectories and files.
Probably a silly question. When running my project on the Device in the debug mode I get a lot of warnings al having the following string:
warning: Unable to read symbols for
/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1
(8C148a)/Symbols/System/Library/PrivateFrameworks/
I think its due to the space between "4.2.1" and "(8C148a)". How can i get rid of it? It must be a setting somewhere in Xcode.
I dont have these warnings on the simulator.
thanks in advance, Christian
I was getting:
warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/usr/lib/info/dns.so (file not found).
Version 4.2.1 does not include 'info/dns.so'. At least that was the case for me. However, it does exist in the 4.2 directory and is pointed to by the /DeviceSupport/Latest shortcut. I simply copy-pasted 'info/dns.so' to where the debugger was looking for it and that seemed to fix the warning.
I had this issue with 4.2.1 (8C148a), which I believe is caused by differing DeviceSupport files on the phone and in XCode. I tried many things, but eventually resolved it by deleting this folder:
/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148a)/
After this I plugged in my iOS device and was asked to connect and restore the symbol files from the device, and it worked normally again.
When you plug an iOS device (iPad) with a slightly newer OS than the the ones in the SDK, a button to download new symbols should appear in the Organizer window of Xcode. Hit it and wait.
I've seen errors like that when my device wasn't on the same version as what I was building for. Are you sure you're not on a 4.2 beta?
I don't think 8C148a is "final"; final builds numbers never seem to end in a letter (my phone is reporting "4.2.1 (8C148)"). I haven't debugged apps on it yet (I got bored waiting for it to extract symbols and went home).
4.2 GM was 8C134, so you're certainly running newer software, but something somewhere is getting the build number wrong.
But I digress.
What directories are in /Developer/Platforms/iPhoneOS.platform/DeviceSupport? If "4.2.1 (8C148a)" doesn't exist but "4.2.1" does, you might have luck doing something like this in Terminal:
cd /Developer/Platforms/iPhoneOS.platform/DeviceSupport
ln -s "4.2.1" "4.2.1 (8C134a)"
Equivalently, if "4.2.1 (8C148)" exists, do something like this instead:
ln -s "4.2.1 (8C148)" "4.2.1 (8C148a)"
You can generally use this trick to get Xcode to talk to a beta device without installing a beta SDK; this is useful if your company has some people running the beta (for testing purposes) and other people on the latest "final" (for release purposes).
There's a mismatch at the moment, where the released version of 4.2.1 is ahead of the SDK version 4.2
#Khrob's comment fixed it for me though!
Until they provide a solid SDK, a cool workaround is to :
1 - select the Executable ( In 'Executables' in the project browser ),
2 - get info and turn off "Break on Debugger() and DebugStr()"*
Cheers, and best wishes for 2011.
T
This does not disable NSLog.
I have 4.2.1 on an iPhone 3G and Xcode 3.2.5 running on a MacBook Pro with 10.6.6. After a clean install of Xcode, I was getting the prompt to download symbols for 4.2.1 after plugging in my iPhone. After the transfer, I would no longer get the prompt when attaching the iPhone, but I was getting tons of "unable to read symbols" messages.
First, what did not work for me:
Creating symbolic link to '4.2 (8C134)' with the name '4.2.1 (8C148)'
Creating symbolic link inside directory '4.2.1 (8C148)' like there is in '4.2 (8C134)' to the ../../Developer/SDKs/iPhoneOS4.2.sdk
Both of the above caused the 'UUID mismatch' errors for several libraries. GDB would start but appear to hang.
Finally, what is currently working for me:
% cd /Developer/Platforms/iPhoneOS.platform/DeviceSupport
% mkdir '4.2.1 (8C148)' # if it does not exist
% cd '4.2.1 (8C148)'
% cp ../4.2\ \(8C134\)/DeveloperDiskImage.dmg* .
% cp -r ../../Developer/SDKs/iPhoneOS4.2.sdk Symbols
Attempt to run debug session for an application and watch the Console. For each warning about a UUID mismatch, remove the file indicated in the log message (I had AudioToolbox, CoreMedia, and some others)
Stop GDB and try again, hopefully with success
At least for my application under development, everything now works fine. Hopefully, Xcode 4.0 will clear this up.