Re: Linking issue, glibc weirdness?

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On 10/12/11 08:36, clemens fischer wrote:
> Allan McRae wrote:
> 
>> 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?
>>>
>>> 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
> 
> I think you're both wrong  8-)
> 

Nope....

Read the first change with binutils-2.22:
http://sourceware.org/cgi-bin/cvsweb.cgi/~checkout~/src/ld/NEWS?rev=1.121&content-type=text/plain&cvsroot=src&only_with_tag=binutils-binutils-2_22

Then read the link to the Fedora wiki I gave above.

Allan



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