nektar++ 4.4.1 make (verbose) Tester

[  2%] Linking CXX executable Tester
cd /home/mikkel/nektar/nektar++-4.4.1/build/tests && /usr/bin/cmake -E cmake_link_script CMakeFiles/Tester.dir/link.txt --verbose=1
/usr/bin/c++  -O3 -DNDEBUG  -rdynamic CMakeFiles/Tester.dir/Metric.cpp.o CMakeFiles/Tester.dir/MetricEigenvalue.cpp.o CMakeFiles/Tester.dir/MetricFile.cpp.o CMakeFiles/Tester.dir/MetricL2.cpp.o CMakeFiles/Tester.dir/MetricLInf.cpp.o CMakeFiles/Tester.dir/MetricPrecon.cpp.o CMakeFiles/Tester.dir/MetricRegex.cpp.o CMakeFiles/Tester.dir/TestData.cpp.o CMakeFiles/Tester.dir/Tester.cpp.o CMakeFiles/Tester.dir/sha1.cpp.o  -o Tester  -L/home/mikkel/nektar/nektar++-4.4.1/build/ThirdParty/dist/lib -Wl,-rpath,/home/mikkel/nektar/nektar++-4.4.1/build/ThirdParty/dist/lib:::::: -lboost_filesystem -lboost_system -lboost_regex -lboost_program_options -lboost_thread -ltinyxml -lrt
/usr/bin/ld: CMakeFiles/Tester.dir/Metric.cpp.o: undefined reference to symbol 'pthread_condattr_setclock@@GLIBC_2.3.3'
/usr/bin/ld: /usr/lib/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[2]: *** [tests/CMakeFiles/Tester.dir/build.make:225: tests/Tester] Error 1
make[2]: Leaving directory '/home/mikkel/nektar/nektar++-4.4.1/build'
make[1]: *** [CMakeFiles/Makefile2:4777: tests/CMakeFiles/Tester.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....