On Fri, Dec 09, 2011 at 08:25:51PM +0100, Philipp wrote: > 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 I just compiled and linked jmeter on an up-to-date system using the upstream (which is me) Makefile and it works OK. Why are you changing the linker options ? Ciao, -- FA Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl.