******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear all, I want to run a solver in parallel. I compile using MPI and enable the NEKTAR_USE_MPI option in the CMake configuration. unfortunately, I got this error when running make install: collect2: error: ld returned 1 exit status library/UnitTests/CMakeFiles/UnitTests.dir/build.make:558: recipe for target 'library/UnitTests/UnitTests-3.2.0' failed make[2]: *** [library/UnitTests/UnitTests-3.2.0] Error 1 CMakeFiles/Makefile2:639: recipe for target 'library/UnitTests/CMakeFiles/UnitTests.dir/all' failed make[1]: *** [library/UnitTests/CMakeFiles/UnitTests.dir/all] Error 2 Makefile:160: recipe for target 'all' failed make: *** [all] Error 2 Do you know what the problem is and how I should fix it? Best Regards, MohammadReza