| CMP0089 |
| ------- |
| |
| .. versionadded:: 3.15 |
| |
| Compiler id for IBM Clang-based XL compilers is now ``XLClang``. |
| |
| CMake 3.15 and above recognize that IBM's Clang-based XL compilers |
| that define ``__ibmxl__`` are a new front-end distinct from ``xlc`` |
| with a different command line and set of capabilities. |
| CMake now prefers to present this to projects by setting the |
| :variable:`CMAKE_<LANG>_COMPILER_ID` variable to ``XLClang`` instead |
| of ``XL``. However, existing projects may assume the compiler id for |
| Clang-based XL is just ``XL`` as it was in CMake versions prior to 3.15. |
| Therefore this policy determines for Clang-based XL compilers 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 ``XL``. The |
| ``NEW`` behavior for this policy is to use compiler id ``XLClang``. |
| |
| .. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.15 |
| .. |WARNS_OR_DOES_NOT_WARN| replace:: does *not* warn by default |
| .. include:: STANDARD_ADVICE.txt |
| |
| See documentation of the |
| :variable:`CMAKE_POLICY_WARNING_CMP0089 <CMAKE_POLICY_WARNING_CMP<NNNN>>` |
| variable to control the warning. |
| |
| .. include:: DEPRECATED.txt |
