Platform support (#152)

docs: add platform support for SIL Kit

Issues: SILKIT-1645

---------

Signed-off-by: Jan Kraemer <jan.kraemer@vector.com>

README.rst

@@ -17,7 +17,7 @@ The Vector SIL Kit
 .. |WinBadge| image:: https://github.com/vectorgrp/sil-kit/actions/workflows/build-win.yml/badge.svg
    :target: https://github.com/vectorgrp/sil-kit/actions/workflows/build-win.yml
 | |ReleaseBadge| |LicenseBadge| |DocsBadge| 
-| |AsanBadge| |UbsanBadge| |TsanBadge| |WinBadge| 
+| |AsanBadge| |UbsanBadge| |TsanBadge| |WinBadge|
 
 The Vector SIL Kit is an open-source library for connecting Software-in-the-Loop Environments.
 This README is intended to provide you with quick start on how to build the Vector SIL Kit.
@@ -30,6 +30,8 @@ The SIL Kit source and documentation is licensed under a permissible open
 source license, see LICENSE file. For licenses of third party dependencies,
 see `ThirdParty/LICENSES.rst`.
 
+For supported platforms, see `Developer Guide <docs/for-developers/developers.rst>`_
+
 Related Projects
 ----------------
 

docs/for-developers/developers.rst

@@ -159,3 +159,109 @@ The final simulation setup can be run through the following commands:
 The complete source code of this sample can be found here: :download:`CMakeLists.txt<../code-samples/simple/CMakeLists.txt>`
 :download:`simple.cpp<../code-samples/simple/simple.cpp>` :download:`simple.yaml<../code-samples/simple/simple.yaml>`
 
+Platform support
+-----------------------
+
+SIL Kit provides three tiers of platform support
+
+.. list-table:: Support Tiers
+   :widths: 15 85
+
+   * - Tier 1
+     - Essential targets. Continuously tested and
+       official binary packages are provided.
+   * - Tier 2
+     - Officially supported targets. Continuously tested
+       but NO binary packages are provided
+   * - Tier 3
+     - | Targets for which we have (limited) build support but which
+       | are not continuously tested and no packages are provided
+
+A platform is hereby defined by the combination of the used operating system (OS), the CPU architecture (eg. x86 or ARM64) and the compiler/toolchain used.
+For example,  `Ubuntu 20.04 x86_64 Clang 10`.
+
+SIL Kit should compile and run on
+any POSIX platform. If you have feedback for different targets or platforms not listed here,
+please report them using GitHub Issues. Thanks!
+
+A target may be upgraded to
+`Tier 1` once we have continuous testing for it in place and we have binary
+packages available for it.
+
+
+Tier 1: Official Packages
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Essential targets. Automatically tested and provided as official binary packages.
+
+.. list-table:: Platform Support
+   :header-rows: 1
+
+   * - OS
+     - Architecture
+     - Notes
+   * - Windows
+     - 64bit (x86_64)
+     - MSVC 19 with Toolset 14.1
+   * - Windows
+     - 32bit (x86)
+     - MSVC 19 with Toolset 14.1
+   * - Ubuntu 18.04
+     - amd64
+     - GCC 8
+   * - Ubuntu 20.04
+     - amd64
+     - Clang 10, `.deb`
+
+Tier 2: CI Support
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Officially supported and automatically tested. NO binary packages provided
+
+.. list-table:: Platform Support
+   :header-rows: 1
+
+   * - Platform
+     - Architecture
+     - Notes
+   * - Windows
+     - 64bit (x86_64)
+     - MSYS2/Mingw: GCC 14
+   * - Ubuntu 22.04
+     - amd64
+     - | GCC 11/Clang 18
+       | + Address Sanitizer
+       | + Undefined Behaviour Sanitizer
+       | + Thread Sanitizer
+   * - Ubuntu 22.04
+     - ARM64
+     - Clang 18
+   * - MAC OS
+     - ARM64/M1
+     - AppleClang 15
+
+Tier 3: Known to build
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Build and tested by individual contributors or users.
+Since these are not part of the CI pipeline, compatibility with these platforms can be broken at any time!
+
+.. list-table:: Platform Support
+   :header-rows: 1
+
+   * - Platform
+     - Architecture
+     - Notes
+   * - Ubuntu 24.04
+     - amd64
+     - | GCC 13
+       | Clang 18
+   * - QNX 7.1 RTOS
+     - X86 64bit
+     - QNX GCC 8
+   * - FreeBSD 14
+     - X86 64bit
+     - FreeBSD Clang 18
+   * - Android
+     - ARM64
+     - NDK builds with default compiler, libc++_shared