Configure fails if --with-ft=none is used

[TiborGY]

Background information

What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash, etc.)

5.0.7

Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)

Not installed yet (trying to build the tarball from the OMPI website)

Please describe the system on which you are running

• Operating system/version: Ubuntu 20.04
• Computer hardware: Older workstation-like PC (i9-10940X, no fancy networking)
• Network type: 1 GbE (irrelevant, only want intra-node)

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Details of the problem

Trying to run the configure script of OpenMPI with --with-ft=none (which is supposedly supported according to https://docs.open-mpi.org/en/main/installing-open-mpi/configure-cli-options/misc.html ) results in this error:

configure: ===== done with 3rd-party/prrte configure =====
checking for internal PRRTE RST files... not found
checking for prte.h... no

*** Fault tolerance
checking if want fault tolerance... Unrecognized FT TYPE: none
configure: error: Cannot continue

Please find attached the entire configure output.

config.txt

[bosilca]

The documentation is incorrect, there is no --with-ft=none support, but you can use --with-ft=no or just don't add FT to your configure line.

[jsquyres]

Oops! Typo in the docs -- thanks for bringing it to our attention. I filed #13233 to fix it.