Re: Linking issue, glibc weirdness?

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On 10/12/11 07:29, Ionut Biru wrote:
> On 12/09/2011 09:25 PM, Philipp wrote:
>> Hi there,
>> I have linking issues with one of the programs I maintain in AUR and I
>> don't quite understand the issue. Here's the output:
>>
>> g++ -Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu
>> -L/usr/X11R6/lib -o jmeters jmeters.o styles.o mainwin.o jclient.o
>> mkimage.o meterwin.o -lsndfile -lclxclient -lclthreads -ljack -lpng
>> -lXft -lX11 -lrt
>> /usr/bin/ld: jmeters.o: undefined reference to symbol
>> 'pthread_mutex_trylock@@GLIBC_2.2.5'
>> /usr/bin/ld: note: 'pthread_mutex_trylock@@GLIBC_2.2.5' is defined in
>> DSO /lib/libpthread.so.0 so try adding it to the linker command line
>> /lib/libpthread.so.0: could not read symbols: Invalid operation
>> collect2: ld returned 1 exit status
>> make: *** [jmeters] Error 1
>>
>> The program is jmeters
>> (https://aur.archlinux.org/packages.php?ID=25711).
>>
>> It depends on clthreads (https://aur.archlinux.org/packages.php?ID=3627)
>> which handles the threading stuff.
>>
>> I wonder where this problem comes from. Needles to say that it worked
>> fine in the past. Any ideas?
>>
>> Regards,
>> Philipp
>>
> 
> sounds like you don't have a fully up to date toolchain
> 

Actually, it sounds like he does have a fully up-to-date toolchain:
http://fedoraproject.org/wiki/UnderstandingDSOLinkChange

The output also gives the fix...
>> /usr/bin/ld: note: 'pthread_mutex_trylock@@GLIBC_2.2.5' is defined in
>> DSO /lib/libpthread.so.0 so try adding it to the linker command line

Allan


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