CMP0129

.. versionadded:: 3.23

Compiler id for MCST LCC compilers is now LCC, not GNU.

CMake 3.23 and above recognize MCST LCC compiler as a different from GNU, with its own command line and set of capabilities. CMake now prefers to present this to projects by setting the :variable:CMAKE_<LANG>_COMPILER_ID variable to LCC instead of GNU. However, existing projects may assume the compiler id for LCC is GNU as it was in CMake versions prior to 3.23. Therefore this policy determines for MCST LCC compiler which compiler id to report in the :variable:CMAKE_<LANG>_COMPILER_ID variable after language <LANG> is enabled by the :command:project or :command:enable_language command. The policy must be set prior to the invocation of either command.

The OLD behavior for this policy is to use compiler id GNU (and set :variable:CMAKE_<LANG>_COMPILER_VERSION to the supported GNU compiler version.) NEW behavior for this policy is to use compiler id LCC, and set :variable:CMAKE_<LANG>_SIMULATE_ID to GNU, and :variable:CMAKE_<LANG>_SIMULATE_VERSION to the supported GNU compiler version.

.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.23 .. |WARNS_OR_DOES_NOT_WARN| replace:: does not warn by default .. include:: include/STANDARD_ADVICE.rst

See documentation of the :variable:CMAKE_POLICY_WARNING_CMP0129 <CMAKE_POLICY_WARNING_CMP<NNNN>> variable to control the warning.

.. include:: include/DEPRECATED.rst