Please refer to an earlier post in this thread: Compile OpenMPI with PBSpro 14.1.10 - #5 by mkaro
You’ll need to customize the script so that the --libs parameter returns “/opt/pbs/lib/libpbs.a -lpthread -lcrypto”
The autotools macros used to detect PBS are not very sophisticated and rely on this script being present. If you look for files in the OpenMPI tree that end with check_tm.m4 you’ll see how they rely on the script being present.
The only other option I see would be to update the macros in the OpenMPI tree and (hopefully) contribute them back to the community.