# Gromacs 2021.3 installation error **URL:** \ **Category:** User discussions\ **Tags:** installation-error\ **Created:** [September 4, 2021, 5:08am UTC](https://gromacs.bioexcel.eu/t/gromacs-2021-3-installation-error/2762 "2021-09-04T05:08:52Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ABMMKI](https://avatars.discourse-cdn.com/v4/letter/a/ecae2f/32.png) [@ABMMKI](https://gromacs.bioexcel.eu/u/ABMMKI)\ **Post date:** [September 4, 2021, 5:08am UTC](https://gromacs.bioexcel.eu/t/gromacs-2021-3-installation-error/2762/1 "2021-09-04T05:08:53Z")
GROMACS version: 2021.3 GROMACS modification: No Here post your question # I was trying to install gromacs new version 2021.3 (also same for 2021.2 same error) in cluster with CENTOS 7. Version of other tools: CMAKE = 3.2 GCC = 11.2 Python = 3.9 cmake .. -DGMX\_BUILD\_OWN\_FFTW=ON -DREGRESSIONTEST\_DOWNLOAD=ON -DCMAKE\_INSTALL\_PREFIX=/home/khademul/bin/gromacs -DCMAKE\_C\_COMPILER=/home/khademul/bin/gcc11/bin/gcc -DCMAKE\_CXX\_COMPILER=/home/khademul/bin/gcc11/bin/g++ # make … … … [100%] Built target nblib [100%] Building CXX object api/nblib/samples/CMakeFiles/argon-forces-integration.dir/argon-forces-integration.cpp.o [100%] Linking CXX executable ../../../bin/argon-forces-integration /home/khademul/bin/gromacs-2021.2/build/lib/libgromacs.so.6: undefined reference to `GOMP_loop_nonmonotonic_dynamic_next@GOMP_4.5' /home/khademul/bin/gromacs-2021.2/build/lib/libgromacs.so.6: undefined reference to `GOMP\_loop\_nonmonotonic\_dynamic\_start@GOMP\_4.5’ collect2: error: ld returned 1 exit status make[2]: \*\*\* [bin/argon-forces-integration] Error 1 make[1]: \*\*\* [api/nblib/samples/CMakeFiles/argon-forces-integration.dir/all] Error 2 make: \*\*\* [all] Error 2 # Can anyone help how to fix ---
**Author:** ![hess](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/hess/32/416_2.png) [@hess](https://gromacs.bioexcel.eu/u/hess)\ **Post date:** [September 7, 2021, 7:39am UTC](https://gromacs.bioexcel.eu/t/gromacs-2021-3-installation-error/2762/2 "2021-09-07T07:39:33Z")
This looks like you are using an incompatible linker. What is CMAKE\_LINKER set to? You can check in CMakeCache.txt. Try setting that to, I guess, /home/khademul/bin/gcc11/bin/ld ---
**Author:** ![ABMMKI](https://avatars.discourse-cdn.com/v4/letter/a/ecae2f/32.png) [@ABMMKI](https://gromacs.bioexcel.eu/u/ABMMKI)\ **Post date:** [September 10, 2021, 2:40pm UTC](https://gromacs.bioexcel.eu/t/gromacs-2021-3-installation-error/2762/3 "2021-09-10T14:40:45Z")
Hi, Many thanks for your response. # CMAKE\_LINKER was CMAKE\_LINKER:FILEPATH= **/usr/bin/ld** # Then I have changed it to, as you suggested (though here is no ld file) CMAKE\_LINKER:FILEPATH= **/home/khademul/bin/gcc11/bin/ld** //ADVANCED property for variable: CMAKE\_LINKER CMAKE\_LINKER-ADVANCED:INTERNAL=1 # However the problem persists and remains the same. cmake .. -DGMX\_BUILD\_OWN\_FFTW=ON -DREGRESSIONTEST\_DOWNLOAD=ON -DMPI\_C\_COMPILER=mpicc -DGMX\_MPI=on -DCMAKE\_INSTALL\_PREFIX=/home/khademul/bin/gromacs -DCMAKE\_C\_COMPILER=/home/khademul/bin/gcc11/bin/gcc -DCMAKE\_CXX\_COMPILER=/home/khademul/bin/gcc11/bin/g++ **-DCMAKE\_LINKER** =/home/khademul/bin/gcc11/bin/ld … … make … … [98%] Built target nblib [98%] Building CXX object api/nblib/samples/CMakeFiles/argon-forces-integration.dir/argon-forces-integration.cpp.o [100%] Linking CXX executable ../../../bin/argon-forces-integration /home/khademul/bin/gromacs-2021.3/build/lib/libgromacs\_mpi.so.6: undefined reference to `GOMP_loop_nonmonotonic_dynamic_next@GOMP_4.5' /home/khademul/bin/gromacs-2021.3/build/lib/libgromacs_mpi.so.6: undefined reference to `GOMP\_loop\_nonmonotonic\_dynamic\_start@GOMP\_4.5’ collect2: error: ld returned 1 exit status make[2]: \*\*\* [bin/argon-forces-integration] Error 1 make[1]: \*\*\* [api/nblib/samples/CMakeFiles/argon-forces-integration.dir/all] Error 2 make: \*\*\* [all] Error 2 ## I do not have root permission and CMAKE, GCC etc installed locally. (default things are tool old version) module load openmpi-1.8-x86\_64 module load tools/openBLAS-0.2.18 module load lib/OpenBLAS-0.3.9 module load compilers/python-3.6.2-gcc # cmake version 3.20.0-rc4 # gcc version 11.2.0 thanks, # any more suggestions? ---
**Author:** ![bgrokm](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/bgrokm/32/1027_2.png) [@bgrokm](https://gromacs.bioexcel.eu/u/bgrokm)\ **Post date:** [September 10, 2021, 2:59pm UTC](https://gromacs.bioexcel.eu/t/gromacs-2021-3-installation-error/2762/4 "2021-09-10T14:59:07Z")
Perhaps try without MPI and if that works, build MPI with the same gcc compiler you are using.