Try configure libfabric with --enable-direct=sockets​. You can pass the option directly to MPICH's configure and it should pass it down to libfabric -- Hui ________________________________ From: Marshall Tabetah via discuss <[email protected]> Sent: Friday, May 6, 2022 10:08 AM To: [email protected] <[email protected]> Cc: Marshall Tabetah <[email protected]> Subject: [mpich-discuss] libfabric failure during mpich install Hello, Team As I attempted to configure mpich-4.0.2 in my cygwin terminal, everything went on well until it failed to configure libfabric. The following error message was thus released upon termination. error: libfabric only builds on Linux, OS X, and FreeBSD. When I find out more information about libfabric, it seems it has support for Windows, so I do not surely know where the error comes from. Anyway, I hereby attach the files that communicate the status of the attempted configuration. Files that are not attached are those that were not produced. I appreciate further discussion/orientation. Cheers, Marshall