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-) The ld(8) output seems to indicate that libpthread is pulled in, but points to something else than a fully functioning library. $ ls -l /lib/libpthread* -rwxr-xr-x 1 root root 135326 Dec 2 19:28 /lib/libpthread-2.14.1.so lrwxrwxrwx 1 root root 20 Dec 2 19:28 /lib/libpthread.so.0 -> libpthread-2.14.1.so $ nm /lib/libpthread.so.0 |g mutex.try -:0000000000009f40 T __pthread_mutex_trylock -:0000000000009f40 T pthread_mutex_trylock Philipp, what's the output of these commands at your place? clemens
