replied on petsc-maint xcode-15 changed considerably, (fixes are in petsc-3.20) that its not easy to backport all needed patches to 3.17.0 So best bet for petsc-3.19 and older is to use linux (remotely or via VM) - or downgrade to xcode-14. Satish On Mon, 20 Nov 2023, Jan Izak C. Vermaak via petsc-users wrote:

Hi all,

I am in the process of upgrading our petsc version to 3.20.1 but I really need our current version to work with 3.17.0.

I am having install issues. Attached is the config log. Command Line Tools 15.0 (CLT 15.0) used to be the source of my problems with the previous OS version for which the solution was to install the old CLT 14.3, however, CLT 14.3 is not compatible with macOS Sonoma (which INL is requiring us to have).

Any help will be appreciated.

Regards, Jan

Jan Vermaak, Ph.D. Senior Nuclear Multiphysics Engineer | Reactor Physics Methods and Analysis Department (C110) Reactor Systems Design and Analysis Division | Nuclear Science & Technology Directorate [email protected]<mailto:[email protected]> | M 979-739-0789 Idaho National Laboratory | 1955 Fremont Ave. | Idaho Falls, ID | 83415 _______________________________

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