New in version 3.23.
Compiler id for MCST LCC compilers is now
CMake 3.23 and above recognize MCST LCC compiler as a different from
with its own command line and set of capabilities.
CMake now prefers to present this to projects by setting the
CMAKE_<LANG>_COMPILER_ID variable to
GNU. However, existing projects may assume the compiler id for
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 after language
<LANG> is enabled by the
enable_language() command. The policy must be set prior
to the invocation of either command.
OLD behavior for this policy is to use compiler id
GNU (and set
CMAKE_<LANG>_COMPILER_VERSION to the supported GNU compiler version.)
NEW behavior for this policy is to use compiler id
LCC, and set
CMAKE_<LANG>_SIMULATE_VERSION to the supported GNU compiler version.
This policy was introduced in CMake version 3.23. Use the
cmake_policy() command to set this policy to
Unlike most policies, CMake version 3.24.2 does not warn
by default when this policy is not set and simply uses
See documentation of the
variable to control the warning.
OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.