Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetC

Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetCtx ctx)

See merge request petsc/petsc!8956

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Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now t

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now the standard for passing in contexts
- PetscCtxRt ctx is the standard for passing out contexts, including context destroy routines based on PetscCtxDestroyFn

Both of these are typedef to void*

Also removed most use of user and userctx for context arguments now consistently named ctx

Improved documentation on PetscCtx and PetscCtxRt and on how to use contexts (including getting them) from Fortran

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Merge branch 'jolivet/adddefine-in-addpost' into 'main'

configure: let addPost automatically addDefine('HAVE_pkgname')

See merge request petsc/petsc!8780

configure: remove useless Makefile variables

configure: let addPost automatically addDefine('HAVE_pkgname')

Merge branch 'jolivet/remove-unneeded-define' into 'main'

configure: remove unneeded addDefine for packages used directly by PETSc

See merge request petsc/petsc!8779

configure: remove unneeded addDefine for packages used directly by PETSc

Packages with `self.useddirectly = 1` (default value) automatically define `PETSC_HAVE_pkgname`

Reported-by: Steven Dargavil

configure: remove unneeded addDefine for packages used directly by PETSc

Packages with `self.useddirectly = 1` (default value) automatically define `PETSC_HAVE_pkgname`

Reported-by: Steven Dargaville @stevendargaville

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Merge branch 'balay/hypre-3.0' into 'main'

configure: HYPRE v3.0 and compatible MFEM

See merge request petsc/petsc!8688

configure: HYPRE 3.0 and compatible MFEM

Merge branch 'barry/2025-07-30/fix-matshellsetoperationarg' into 'main'

Complete usage of PetscVoidFn and PetscErrorCodeFn and introduce PetscFortranCallbackFn

See merge request petsc/petsc!8615

Change use of void (*)(void) and void (**)(void) in the PETSc API to PetscVoidFn * and PetscVoidFn ** or PetscErrorCodeFn * or PetscErrorCodeFn **

Merge branch 'jeremy/bump-ceed' into 'main'

Update libCEED version

See merge request petsc/petsc!8652

rename - libceed -> libCEED

Merge branch 'jolivet/feature-mumps-blk' into 'main'

MATSOLVERMUMPS: add support for -mat_mumps_icntl_15 1

See merge request petsc/petsc!8537

configure: update Open MPI/OpenBLAS/SLEPc/SuiteSparse

Merge branch 'jolivet/proper-capitalization' into 'main'

configure: fix capitalization of multiple packages and PETSc itself

See merge request petsc/petsc!8597

configure: fix capitalization of multiple packages and PETSc itself

Merge branch 'barry/2025-05-21/fix-post-build-install' into 'main'

Rework handling in configure/build handling of building/installing of packages...

See merge request petsc/petsc!8434

Rework handling in configure/build handling of building/installing of packages that must be built after PETSc

Add package.addPost() to register compile/install of external software to be done after

Rework handling in configure/build handling of building/installing of packages that must be built after PETSc

Add package.addPost() to register compile/install of external software to be done after PETSc is compiled/installed

Add package.addMakeCheck() to register make check for external software

Can now removed hardwired listing of rules for bamg, hpddm, etc from the PETSc makefiles

Much easier to add new packages that require post compiler/install makes

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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 'lindad/update-mfem-hash' into 'main'

Update mfem hash

See merge request petsc/petsc!8047

Update mfem hash

This pulls in https://github.com/mfem/mfem/pull/4510 such that
we can build MFEM when PETSc has been configured with 64-bit indices

Merge branch 'lindad/more-mfem-config-options' into 'main'

MFEM: add in Superlu_DIST and NetCDF as optional dependencies

See merge request petsc/petsc!7836

MFEM: add in Superlu_DIST and NetCDF as optional dependencies