petsc: update to 3.21.2; slepc: update to 3.21.1, fix the port

[barracuda156]

Description

slepc does not build since it is too old. Update both ports.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.6
Xcode 3.2

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL in commit message?
• checked your Portfile with port lint --nitpick?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@MarcusCalhoun-Lopez for port petsc, slepc.

[barracuda156]

CI on macOS-13 is MPICH-related, we cannot do anything about that here.

[ryandesign]

CI on macOS-13 is MPICH-related, we cannot do anything about that here.

Really? It says:

*********************************************************************************************
           UNABLE to CONFIGURE with GIVEN OPTIONS (see configure.log for details):
---------------------------------------------------------------------------------------------
  C compiler you provided with -CC=/opt/local/bin/mpicc-mpich-mp cannot be found or does
  not work.
  If the above linker messages do not indicate failure of the compiler you can rerun with
  the option --ignoreLinkOutput=1
*********************************************************************************************

We can't fix that?

[barracuda156]

@ryandesign Admittedly I did not download logs, but given it builds on macOS-14 and macOS-12, but specifically fails on macOS-13, this looks exactly like a breaking flag in MPICH PG, which breaks CI for every port using it.

I recall I have submitted a patch which fixed the problem, but there was no enthusiasm to merge it, so perhaps that PR was closed.

[barracuda156]

@ryandesign Squashed and rebased now with your change.