Although I can no longer install flang-7 on my Sid host since the upgrades to LLVM 8 and now non-default LLVM 9, the general situation described still applies to libomp-9-dev. If a user compiles with the -fopenmp=<lib> option (instead of simply -fopenmp), it's much better if <lib> doesn't change from version to version of the toolchain. It would still be helpful to have the libomp-<ver>-dev package install a symlink:
/usr/lib/<arch>/libomp.so -> libomp5.so The target libomp5.so is already maintained by libomp-<ver>-dev to point into the current /usr/lib/llvm-<ver> directory. I continue to keep that symlink in place as a workaround, so I'm not suffering myself so long as I remember to create it on new installations. Thanks for considering this request. -- James Ronald Lovell <ron163...@gmail.com> Huntsville, AL, USA