[gmx-developers] pthreads missing when attempting to link with libgtest.so

[Gernot Ziegler]

Being a newbie to Gromacs compilation (but not Linux source compilation in general), I just stumbled over the following when trying to compile a Gromacs freshly pulled via git:

localhost gromacs # cmake -DGMX_OPENMM=ON
[...]

localhost gromacs # make
[  0%] Generating version information
[  0%] Built target gmx_version
[ 72%] Built target libgromacs
[ 72%] Built target template
[ 73%] Built target testutils
Linking CXX executable testutils-test
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.6/../../../../lib64/libgtest.so: undefined reference to `pthread_key_create'
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.6/../../../../lib64/libgtest.so: undefined reference to `pthread_getspecific'
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.6/../../../../lib64/libgtest.so: undefined reference to `pthread_key_delete'
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.6/../../../../lib64/libgtest.so: undefined reference to `pthread_setspecific'
collect2: ld returned 1 exit status
make[2]: *** [src/testutils/tests/testutils-test] Error 1
make[1]: *** [src/testutils/tests/CMakeFiles/testutils-test.dir/all] Error 2
make: *** [all] Error 2

The system is Gentoo Linux AMD64, using gcc 4.4.6, CMake cache as follows:

All hints welcomed! And let me know if you need more information :-)

/Gernot


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