Thanks for the information regarding linking changes. As you assumed the structure of the call to gfortran was incorrect. Changing the Makefile instruction from
gfortran file.f90 -o program_name -llapack $(object_files) to gfortran file.f90 -o program_name $(object_files) -llapack fixed the issue. Thanks again for your help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1030952 Title: zgeevx undefined To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lapack/+bug/1030952/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs