Merge branch 'jczhang/2026-02-16/change-cpp-to-cxx' into 'main'

Change *.cpp to *.cxx

See merge request petsc/petsc!9043

Change *.cpp to *.cxx

Merge branch 'jczhang/2025-09-19/precision-mumps' into 'main'

Support different precisions with MUMPS

See merge request petsc/petsc!8715

Config: add support of multiple OR'ed values on a #requires<key> line

Merge branch 'rmills/feature-ml-petscregressor' into 'main'

Add basic PetscRegressor component with support for a few linear regressors

See merge request petsc/petsc!7709

Add initial version PetscRegressor, part of the planned machine learning (ML) toolkit

Co-authored-by: Mr. Hong Zhang <hongzhang@anl.gov>
Co-authored-by: Hansol Suh <hsuh@anl.gov>
Co-authored-by: Bar

Add initial version PetscRegressor, part of the planned machine learning (ML) toolkit

Co-authored-by: Mr. Hong Zhang <hongzhang@anl.gov>
Co-authored-by: Hansol Suh <hsuh@anl.gov>
Co-authored-by: Barry Smith <bsmith@petsc.dev>
Co-authored-by: Toby Isaac <toby.isaac@gmail.com>
Co-authored-by: Satish Balay <balay@mcs.anl.gov>

Mr. Hong Zhang developed the petsc4py interface and examples.
Hansol Suh provided extensive help with updating the code to the latest PETSc coding guidelines and APIs, some documentation development, getting documentation to build correctly, getting new tests into the test harness, and numerous big fixes plus minor changes.
Barry Smith provided extensive feedback and code to get the Fortran interfaces and documentation build working.
Toby Isaac provided a fix to prevent breakage with complex-arithmetic builds.
Satish Balay provided important help with fixing builds.

Thanks-to: Pierre Jolivet <pierre@joliv.et>
Thanks-to: Jed Brown <jed@jedbrown.org>
Thanks-to: Jose Roman <jroman@dsic.upv.es>
Thanks-to: Stefano Zampini <stefano.zampini@gmail.com>

Pierre, Jed, Jose, and Stefano provided extremely helpful feedback and suggestions during the merge review process.

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Merge branch 'barry/2025-03-20/minor-fortran-cleanup' into 'main'

Minor cleanup of Fortran binding stuff to simplify future maintainance

See merge request petsc/petsc!8218

Minor cleanup of Fortran binding stuff to simplify future maintainance

There is no distinction between F90 and non-F90 code so combine ftn-custom and f90-custom directories and fortranimpl.h and f90

Minor cleanup of Fortran binding stuff to simplify future maintainance

There is no distinction between F90 and non-F90 code so combine ftn-custom and f90-custom directories and fortranimpl.h and f90impl.h files. Also move uses of f90 to ftn when simple

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Merge branch 'barry/2024-04-29/add-fortran-enums' into 'main'

Major updates to Fortran interface

See merge request petsc/petsc!7517

Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous ve

Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous versions!
- also clean up inconsistent PETSc code detected by new Fortran generation tools
- drop use of bfort
- automatically generate all the Fortran PETSc objects, enums etc from the include files
- generate most of the Fortran interface definitions and functions from the source code
- simplify the number and organization of Fortran modules

Co-authored-by: Jose E. Roman <jroman@dsic.upv.es>

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Merge branch 'balay/configure-fix-for-python-3.13' into 'main'

configure: python-3.13 does no have xdrlib, _parse_makefile in sysconfig

Closes #1604

See merge request petsc/petsc!7790

configure: python-3.13 does no have xdrlib, _parse_makefile in sysconfig

Fixes #1604

Thanks-to: https://gitlab.com/sagitter

Merge branch 'libpetsc-repro' into 'main'

gmakegen: sort source files

See merge request petsc/petsc!7339

gmakegen: sort source files

This makes libpetsc.so reproducible. Without this fix the order of
symbols in libpetsc.so is different between builds.

Follow-up on !893.

Merge branch 'barry/2023-10-18/rm-dirs-from-makefiles' into 'main'

Remove use of and the DIRS variables from the makefiles

See merge request petsc/petsc!6945

Remove use of DIRS in gmakegen.py to generate list of compiled code

Merge branch 'barry/2023-06-28/fix-test-harness-for-other-packages' into 'main'

add support for using the test harness for application code

See merge request petsc/petsc!6645

fix bugs in testharness that effect using it for other packages and document how to use it

Merge branch 'barry/2023-06-22/-add-out-of-place-fortran-stubs' into 'main'

Add support for generating fortran stubs out of the source directory and into PETSC_ARCH

See merge request petsc/petsc!66

Merge branch 'barry/2023-06-22/-add-out-of-place-fortran-stubs' into 'main'

Add support for generating fortran stubs out of the source directory and into PETSC_ARCH

See merge request petsc/petsc!6627

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Fix for gmakegen.py required by SLEPc in the case of prefix builds

Allow generatefortranstubs.py to generate the stubs and module files in the PETSC_ARCH directory

Merge branch 'barry/2023-06-15/add-fortran-file-viewer' into 'main'

Allow one to attach a PETSCVIEWERASCII to a Fortran file unit

See merge request petsc/petsc!6607

HAVE_FORTRAN should be USE_FORTRAN_BINDINGS since it is about generating the Fortran bindings, not about if the Fortran compiler exists

Merge branch 'jose/release/gmakegen-fix' into 'release'

Fix gmakegen.py for /build in pkg_dir when pkg_dir != petsc_dir

See merge request petsc/petsc!6661

Fix gmakegen.py for /build in pkg_dir when pkg_dir != petsc_dir