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