[Docs] accelerators are built as DSOs by default, docs still say otherwise

[minrk]

Background information

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

v5.0.5

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

conda, but this is a docs issue, not relevant.

Please describe the system on which you are running

• Operating system/version: mac
• Computer hardware: m1
• Network type: N/A

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Details of the problem

It looks like CUDA components are built as DSOs by default starting with #12036 (this is our experience packaging for conda-forge, and I think a great default!). But the docs on DSO configuration and building with CUDA haven't been updated to reflect this, so give the false impression of what's required or what will be done by default.

In particular, these places all discuss --enable-mca-dso and have inaccurate statements with respect to the new defaults and should probably get an update:

• installation options still states that the default is to build all components as static
• Building accelerator support as DSOs should probably reflect that the recommendation there is now the default behavior
• networking/cuda covers some of the same points, stating that options are required that are not.

[hppritcha]

@jsquyres are you working on this?

[jsquyres]

I have not had an opportunity to do so -- if you have a few cycles, please feel free to update the docs.

[hppritcha]

okay i'll do it. i'll open a pr and ping you for review - probably not till after thanksgiving though!