Merge branch 'balay/disable-python2' into 'main'

Balay/disable python2

See merge request petsc/petsc!5131

disable python2 support - now python3.4+ is required
- update CI tests to use python3
- continue to use python2 on MacOS CI [due to python3 issues on 10.15.7]

Merge branch 'jacobf/2021-10-20/configure-banner-length' into 'main'

Make the initial configure warning banners the same size as all the other configure banners

See merge request petsc/petsc!4481

- Standardize the configure banner length
- Make the main "configuring on you system" banner centered and use standard banner length
- Make the "error from configure arguments" banner centered and us

- Standardize the configure banner length
- Make the main "configuring on you system" banner centered and use standard banner length
- Make the "error from configure arguments" banner centered and use standard banner length
- Make the initial configure warning banners the same size as all the other configure banners

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Merge branch 'jacobf/2021-10-05/sunset-python2-configure/release' into 'main'

Deprecate python2 support in configure

See merge request petsc/petsc!4413

deprecate python2 support in configure and slate it for removal in 3.18

Merge branch 'jed/rm-distutils' into 'main'

config: remove distutils from build

See merge request petsc/petsc!4253

Python: drop support for Python-2.6, which reached EOL in Sep 2017

config: remove distutils from build

distutils is deprecated and will be removed in Python-3.12:

https://www.python.org/dev/peps/pep-0632/

Most features carry over readily with sysconfig (part of

config: remove distutils from build

distutils is deprecated and will be removed in Python-3.12:

https://www.python.org/dev/peps/pep-0632/

Most features carry over readily with sysconfig (part of minimal python,
unlike distutils, which is often an optional package). One exception is
distutils.sysconfig.parse_makefile, which is more full-featured than
sysconfig._parse_makefile (a private method that exists in python 2.7
and all tested python 3 versions). Specifically, _parse_makefile()
cannot handled lines continued with trailing backslash (\) and thus we
must forbid continuations for DIRS and SOURCE* lines -- just use a line
as long as it needs to be. This system will hopefully be renovated anyway.

Commit-type: portability

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Merge branch 'barry/2020-10-05/clean-configure' into 'master'

Barry/2020 10 05/clean configure

See merge request petsc/petsc!3311

No longer print the debug statement of what python is being used for configure.

Commit-type: configure
/spend 1m

Development Tools: Vim, Emacs, Eclipse

Merge remote-tracking branch 'origin/maint'

Merge branch 'balay/python-check-distutils/maint' into 'maint'

configure: add check for distutils - this is required for PETSc build

See merge request petsc/petsc!2831

configure: add check for distutils.sysconfig - this is required for PETSc build

Reported-by: Jose E. Roman <jroman@dsic.upv.es>
Reported-by: Pierre Jolivet <pierre.jolivet@enseeiht.fr>

Merge remote-tracking branch 'origin/maint'

Merge branch 'balay/configure-no-python-in-bin/maint' into 'maint'

configure: /usr/bin/python might not exist in newer distributions

See merge request petsc/petsc!2818

configure: /usr/bin/python might not exist in newer distributions

Reported-by: Jacob Faibussowitsch <jacob.fai@gmail.com>
Reported-by: Sajid Ali <sajidsyed2021@u.northwestern.edu>

Authored-by: Jaco

configure: /usr/bin/python might not exist in newer distributions

Reported-by: Jacob Faibussowitsch <jacob.fai@gmail.com>
Reported-by: Sajid Ali <sajidsyed2021@u.northwestern.edu>

Authored-by: Jacob Faibussowitsch <jacob.fai@gmail.com>
Authored-by: Jed Brown <jed@jedbrown.org>

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Merge branch 'balay/fix-old-python' into 'master'

python2.4/2.6 updates

See merge request petsc/petsc!2592

python2.4/2.6 updates

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

Merged petsc/petsc into master

Merge branch 'master' into jpusztay/feature-swarm-symplectic-example

Merge branch 'master' into jpustay/feature-swarm-example

Merged petsc/petsc into master

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (393 commits)
Bib: Update reference
Mat: Doc fix
Bib: Updated ref
PetscDS: Doc fixes
PC+LU: Do not try to refactor an

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (393 commits)
Bib: Update reference
Mat: Doc fix
Bib: Updated ref
PetscDS: Doc fixes
PC+LU: Do not try to refactor an already factored matrix
Mat: Small fix for checking and docs
Mat: Added MatSetFactorType() - Needed it when making a shell matrix look factored
PetscDS: Added PetscDSUpdateBoundary() - Lets the user change the boundary condition
single precision produces different convergence history
p4est: has a dependency on zlib - so handle it correctly
Add -mat_mffd_complex to use the Lyness complex number trick to compute J_u * v instead of differencing.
Replace VecWAXPY by VecAXPY if needed
Revert "Replace VecWAXPY by VecAXPY if needed"
Replace VecWAXPY by VecAXPY if needed
MatHermitianTransposeGetMat and MatCreateVecs
ex19: Updated test filter to avoid false positives.
DM: Improved Global-To-Natural docs Suggested-by: Josh L <ysjosh.lo@gmail.com>
Do not build shared openblas when doing static build
Upgrade OpenBLAS to 0.3.3
test: add alt output file for changes in OSX-10.14 and Xcode-10.0 [perhaps related to ML]
...

Conflicts:
src/vec/is/utils/vsectionis.c

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Merge branch 'jed/python3-futurize' [PR #1122]

Merge announces support for Python 3.4+ in changes/dev.html.

* jed/python3-futurize: (44 commits)
gmakegentest: avoid prefix matching in regex
dm

Merge branch 'jed/python3-futurize' [PR #1122]

Merge announces support for Python 3.4+ in changes/dev.html.

* jed/python3-futurize: (44 commits)
gmakegentest: avoid prefix matching in regex
dm tests ex23.c: fix test args: -one -two -three
gmakegentest: more fixes
gmakegentest: fix processing of arguments containing number followed by "-"
gmakegentest: always loop over nsize; Python-3 fixes
python3: add in a python-3.4 test
python: fix build on osx/opensolaris - where 'RANLIB=ranlib -c' i.e with a space..
python3: fix --download-ptscotch error
configure: glob() gets executed early - whereas we need to get file list later [after 'make all' or equivalent] so revert back to using shell to get file-list
python3: map() requires a list modifier for this usage.
python: replace ModuleNotFoundError a python3.6+ feature with ImportError
config: call setup to ensure that debugLevel is set
nightlies: switch linux-pkg-dbg-ftn-interfaces to python3
config: enable Python-3
config: urllib/urlparse updates for Python-3 compatibility
config fblaslapack: use isIBM instead of manual test
python: replace commands with subprocess
Fix LOCDIR paths
generateetags.py: switch from commands to subprocess; unicode fix
python: don't import commands when it isn't used
...

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