Tasking: Add support for several compiler toolsets

Add support for the Tasking compiler toolset:

* TriCore Compiler Toolset 6.3 (with TriCore, ARM, MCS,
  8051 and PCP architecture compilers)
* SmartCode Compiler Toolset 10.1 (with TriCore, ARC, MCS,
  8051 architecture compilers)
* ARM Compiler 6.0
* MCS Complier 3.3
* 8051 Compiler 7.2

Fixes: #23756

4 files changed, 42 insertions, 0 deletions

diff --git a/Help/manual/cmake-variables.7.rst b/Help/manual/cmake-variables.7.rst
index 6533ca5..ebebc1a 100644
--- a/Help/manual/cmake-variables.7.rst
+++ b/Help/manual/cmake-variables.7.rst
@@ -510,6 +510,7 @@ Variables that Control the Build
    /variable/CMAKE_STATIC_LINKER_FLAGS_CONFIG
    /variable/CMAKE_STATIC_LINKER_FLAGS_CONFIG_INIT
    /variable/CMAKE_STATIC_LINKER_FLAGS_INIT
+   /variable/CMAKE_TASKING_TOOLSET
    /variable/CMAKE_TRY_COMPILE_CONFIGURATION
    /variable/CMAKE_TRY_COMPILE_NO_PLATFORM_VARIABLES
    /variable/CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
diff --git a/Help/release/dev/add_tasking_compiler.rst b/Help/release/dev/add_tasking_compiler.rst
new file mode 100644
index 0000000..705f923
--- /dev/null
+++ b/Help/release/dev/add_tasking_compiler.rst
@@ -0,0 +1,8 @@
+add_tasking_compiler
+--------------------
+
+ * Support for the `Tasking compiler toolsets`_ (SmartCode, TriCore,
+   Standalone: ARM, MCS, 8051) was added with compiler id ``Tasking``.
+   See the :variable:`CMAKE_TASKING_TOOLSET` variable.
+
+.. _`Tasking compiler toolsets`: https://tasking.com
diff --git a/Help/variable/CMAKE_LANG_COMPILER_ID.rst b/Help/variable/CMAKE_LANG_COMPILER_ID.rst
index f0534ba..0dbc0a0 100644
--- a/Help/variable/CMAKE_LANG_COMPILER_ID.rst
+++ b/Help/variable/CMAKE_LANG_COMPILER_ID.rst
@@ -44,6 +44,7 @@ Value                           Name
 ``XL``, ``VisualAge``, ``zOS``  IBM XL
 ``XLClang``                     IBM Clang-based XL
 ``IBMClang``                    IBM LLVM-based Compiler
+``Tasking``                     `Tasking Compiler Toolsets`_
 =============================== ===============================================
 
 This variable is not guaranteed to be defined for all compilers or
@@ -63,3 +64,4 @@ languages.
 .. _Open Watcom: https://open-watcom.github.io
 .. _Small Device C Compiler: http://sdcc.sourceforge.net
 .. _Tiny C Compiler: https://bellard.org/tcc
+.. _Tasking Compiler Toolsets: https://tasking.com
diff --git a/Help/variable/CMAKE_TASKING_TOOLSET.rst b/Help/variable/CMAKE_TASKING_TOOLSET.rst
new file mode 100644
index 0000000..430207e
--- /dev/null
+++ b/Help/variable/CMAKE_TASKING_TOOLSET.rst
@@ -0,0 +1,31 @@
+CMAKE_TASKING_TOOLSET
+---------------------
+
+.. versionadded:: 3.25
+
+Select the Tasking toolset which provides the compiler
+
+Architecture compilers are provided by different toolchains with
+incompatible versioning schemes.  Set this variable in a
+:variable:`toolchain file <CMAKE_TOOLCHAIN_FILE>` so CMake can detect
+the compiler and version correctly. If no toolset is specified,
+``Standalone`` is assumed.
+
+Projects, that can be build with different architectures and/or toolsets, must
+take :variable:`CMAKE_TASKING_TOOLSET` and
+:variable:`CMAKE_<LANG>_COMPILER_ARCHITECTURE_ID` into account to qualify
+:variable:`CMAKE_<LANG>_COMPILER_VERSION`.
+
+``TriCore``
+  Compilers are provided by the TriCore toolset.
+
+``SmartCode``
+  Compilers are provided by the SmartCode toolset.
+
+``Standalone``
+  Compilers are provided by the standalone toolsets.
+
+  .. note::
+
+    For the TriCore architecture, the compiler from the TriCore toolset is
+    selected as standalone compiler.