xSDK policies compatibility

[aprokop]

Compatibility with v0.6. Template taken from here.

xSDK Community Policy Compatibility for ArborX

Website: https://github.com/arborx/ArborX

Mandatory Policies

Policy	Support	Notes
M1. Support portable installation through Spack.	Full	ArborX is a spack package: https://github.com/spack/spack/blob/develop/var/spack/repos/builtin/packages/arborx/package.py
M2. Provide a comprehensive test suite for correctness of installation verification.	Full	ArborX uses CTest for running comprehensive tests.
M3. Employ user-provided MPI communicator (no MPI_COMM_WORLD). Don't assume a full MPI 3 implementation without checking. Provide an option to prevent any changes to MPI error-handling if it is changed by default.	Full	Only user-provided communicators are used.
M4. Give best effort at portability to key architectures (standard Linux distributions, GNU, Clang, vendor compilers, and target machines at ALCF, NERSC, OLCF).	Full	ArborX requires C++14 and supports all upcoming backends (CUDA, HIP, OpenMPTarget, and SYCL)
M5. Provide a documented, reliable way to contact the development team.	Full	https://github.com/arborx/ArborX/blob/master/CONTRIBUTING.md
M6. Respect system resources and settings made by other previously called packages (e.g. signal handling).	Full	ArborX doesn't interfere with that.
M7. Come with an open source (BSD style) license.	Full	BSD 3-Clause
M8. Provide a runtime API to return the current version number of the software.	Full	ArborX::version() and ArborX::gitCommitHash()
M9. Use a limited and well-defined symbol, macro, library, and include file name space.	Full	All ArborX functionality is wrapped in the ArborX namespace, macros start with ARBORX_, header files have the format ArborX_*.
M10. Provide an xSDK team accessible repository (not necessarily publicly available).	Full	https://github.com/arborX/ArborX
M11. Have no hardwired print or IO statements that cannot be turned off.	Full	ArborX doesn't use any IO statements.
M12. For external dependencies, allow installing, building, and linking against an outside copy of external software.	Full	All dependencies have to be provided externally.
M13. Install headers and libraries under <prefix>/include and <prefix>/lib.	Full	Yes, the install path is chosen via CMAKE_INSTALL_PREFIX.
M14. Be buildable using 64 bit pointers. 32 bit is optional.	Full	Yes, whatever the compiler uses.
M15. All xSDK compatibility changes should be sustainable.	Full	The xSDK compatibility requirements are fulfilled by the default branch.
M16. Any xSDK-compatible package that compiles code should have a configuration option to build in Debug mode.	Full	Via CMake.

Recommended Policies

Policy	Support	Notes
R1. Have a public repository.	Full	https://github.com/arborX/ArborX
R2. Possible to run test suite under valgrind in order to test for memory corruption issues.	None
R3. Adopt and document consistent system for error conditions/exceptions.	Full	We use assert() for critical errors.
R4. Free all system resources acquired as soon as they are no longer needed.	Full	ArborX requires Kokkos which needs to be initialized and finalized at before using ArborX resp. after using ArborX
R5. Provide a mechanism to export ordered list of library dependencies.	Full	Via CMake.
R6. Document versions of packages that it works with or depends upon, preferably in machine-readable form.	Full	Via CMake.
R7. Have README, SUPPORT, LICENSE, and CHANGELOG files in top directory.	Partial	https://github.com/arborx/ArborX/blob/master/README.md, https://github.com/arborx/ArborX/blob/master/LICENSE.
R8. Each xSDK member package should have sufficient documentation to support use and further development.	Full	https://github.com/arborx/ArborX/wiki

[aprokop]

xsdk released a version 0.5.0 of policies on June 29. Need to update the list. Updated.

[aprokop]

Needs to be updated to 0.6.0 version of policies, released on 10/12/2020. Template is here. Updated.

[aprokop]

Corresponding xsdk-project/xsdk-policy-compatibility#34 submitted. Closing this issue.