Enable HIP and SYCL configuration

This adds support for HIP and SYCL configuration.

HIP is both a compiler (hipcc) and a package to be searched for
(hipblas, hipsparse) similar to CUDA.
Language:

Enable HIP and SYCL configuration

This adds support for HIP and SYCL configuration.

HIP is both a compiler (hipcc) and a package to be searched for
(hipblas, hipsparse) similar to CUDA.
Language: HIP; Compiler: HIPCC (even though it is C++)

SYCL is currently implemented for searching only the dpcpp compiler.
Because Intel's oneAPI is very similar to MKL, Blas/Lapack is handled by
those packages.
Language: SYCL; Compiler: SYCLCXX

Although it is a C++ compiler, both hipcc and dpcpp are very slow.
Currently using the .hip.cpp and .sycl.cxx extensions although more work
will be needed for testings. See the kokkos work.

This includes preliminary changes for pipeline testing
The HIP_PLATFORM is an environment variable that chooses the backend.
So one configuration file, but the platform is specified in
.gitlab-ci.yml.

This includes beta versions of configuration files for what could be used on
Frontier. This is both the HIP version and CUDA versions for enabling
comparisons.

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Merge branch 'barry/2020-06-13/fix-init-fptrap' into 'master'

Bug fix for initialization of _trapmode on Linux and MacOS when exception...

See merge request petsc/petsc!2877

Bug fix for initialization of _trapmode on Linux and MacOS when exception handling of divide by zero is enabled

Cleanup and extension of floating point exception handling.
Now properly turns

Bug fix for initialization of _trapmode on Linux and MacOS when exception handling of divide by zero is enabled

Cleanup and extension of floating point exception handling.
Now properly turns off floating point trapping for Lapack when Fortran linker turns on divide by zero trapping

Commit-type: error-checking, bug-fix, portability-fix, feature, documentation
Reported-by: Sanjay Govindjee <s_g@berkeley.edu>

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Merge branch 'MR--config-lowercase-pkgname' into 'master'

config: pkg-config: default to lowercase file.pc

See merge request petsc/petsc!2754

config: modernize DumpPkgconfig

pkg-config: switch to lowercase convention

Lowercase petsc.pc (versus PETSc.pc) is a more common convention.
We'll keep the uppercase variant (on filesystems that support it) for
backward compatibil

pkg-config: switch to lowercase convention

Lowercase petsc.pc (versus PETSc.pc) is a more common convention.
We'll keep the uppercase variant (on filesystems that support it) for
backward compatibility, but recommend using petsc.pc in new code.

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Merge remote-tracking branch 'origin/maint'

Merge branch 'mg/lowercase-direct-h' into 'maint'

Fix detection of `direct.h` header file

See merge request petsc/petsc!2721

Fix case of `windows.h` header

Fix detection of `direct.h` header file

On case-sensitive filesystems the capitalisation of the file is important and
the header file is correctly called `direct.h`, with lowercase `d`, see
https://

Fix detection of `direct.h` header file

On case-sensitive filesystems the capitalisation of the file is important and
the header file is correctly called `direct.h`, with lowercase `d`, see
https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/mkdir-wmkdir?view=vs-2019#requirements

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ci: fixes for vermin python syntax checker

vermin -vv --backport argparse -t=2.6- -t=3.4- config

Merge branch 'balay/ci-vermin/maint' into 'master'

Balay/ci vermin/maint

See merge request petsc/petsc!2686

ci: fixes for vermin python syntax checker

vermin -vv --backport argparse -t=2.6- -t=3.4- config

Merge remote-tracking branch 'origin/balay/ftn-updates'

Balay/ftn updates

See merge request petsc/petsc!2528

Merge remote-tracking branch 'origin/maint'

Merge branch 'jolivet/fix-mingw-toolchain' into 'maint'

Fix MinGW toolchain errors

See merge request petsc/petsc!2521

Fix MinGW toolchain errors

more f90 fixes: remove PETSC_USING_F90 usage

Merge remote-tracking branch 'origin/maint'

Merge remote-tracking branch 'origin/barry/2020-02-13/fix-separate-spelling' into maint

git grep -l "seperate" | xargs sed -i '' -e 's/seperate/separate/g'

See merge request petsc/petsc!2522

git grep -l "seperate" | xargs sed -i '' -e 's/seperate/separate/g'

Commit-type: spelling-fix
Reported-by: Pierre JOLIVET <Pierre.Jolivet@enseeiht.fr>

Merge remote-tracking branch 'origin/maint'

Merge branch 'balay/fix-CXXPPFLAGS-usage' into 'maint'

build: fix usage of preprocessor flags across languages

See merge request petsc/petsc!2159

build: fix usage of preprocessor flags across languages
- consistently set flags CPP_FLAGS, FPP_FLAGS, CXXPP_FLAGS, PCPP_FLAGS
- add PPPFLAGS, PFLAGS to map user-make-flags CFLAGS/CXXFLAGS or CPPFL

build: fix usage of preprocessor flags across languages
- consistently set flags CPP_FLAGS, FPP_FLAGS, CXXPP_FLAGS, PCPP_FLAGS
- add PPPFLAGS, PFLAGS to map user-make-flags CFLAGS/CXXFLAGS or CPPFLAGS/CXXPPFLAGS correctly to the PCC compile targets
- use PCPP_FLAGS with PCC targets and CXXPP_FLAGS with CXX targets

Notes
- CFLAGS/CPPFLAGS [API] for makefile does not override the the same variables specified to configure.
[CFLAGS/CPPFAGS to configure are saved in CC_FLAGS, CPP_FLAGS]
- For some reason CPPFLAGS gets added to both CC_FLAGS [via self.setCompilers.getCompilerFlags()] and CPP_FLAGS. Its not clear if one can be remoted
- We do not have a clean C compile target like we have for Cxx - due to --with-clanguage [hence PCC etc intertwined with PETSC_COMPILE..]

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Merge branch 'barry/2019-07-27/error-check-mpiexec' into 'master'

Large number of fixes, optimizations for configure, speeds up the configure

See merge request petsc/petsc!2046