/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../lib/libgtest.a(gtest-all.cc.o): undefined reference to symbol 'pthread_key_delete@@GLIBC_2.2.5'
/lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
foreign/c/test/softc/CMakeFiles/foreign-softc-test.dir/build.make:335: recipe for target 'foreign/c/test/softc/foreign-softc-test' failed
make[2]: *** [foreign/c/test/softc/foreign-softc-test] Error 1
CMakeFiles/Makefile2:533: recipe for target 'foreign/c/test/softc/CMakeFiles/foreign-softc-test.dir/all' failed
make[1]: *** [foreign/c/test/softc/CMakeFiles/foreign-softc-test.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2