| CMP0025 | |
| ------- | |
| Compiler id for Apple Clang is now ``AppleClang``. | |
| CMake 3.0 and above recognize that Apple Clang is a different compiler | |
| than upstream Clang and that they have different version numbers. | |
| CMake now prefers to present this to projects by setting the | |
| :variable:`CMAKE_<LANG>_COMPILER_ID` variable to ``AppleClang`` instead | |
| of ``Clang``. However, existing projects may assume the compiler id for | |
| Apple Clang is just ``Clang`` as it was in CMake versions prior to 3.0. | |
| Therefore this policy determines for Apple Clang 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 ``Clang``. The | |
| ``NEW`` behavior for this policy is to use compiler id ``AppleClang``. | |
| .. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.0 | |
| .. |WARNS_OR_DOES_NOT_WARN| replace:: does *not* warn by default | |
| .. include:: STANDARD_ADVICE.txt | |
| See documentation of the | |
| :variable:`CMAKE_POLICY_WARNING_CMP0025 <CMAKE_POLICY_WARNING_CMP<NNNN>>` | |
| variable to control the warning. | |
| .. include:: DEPRECATED.txt | |