| CMP0047 | |
| ------- | |
| Use ``QCC`` compiler id for the qcc drivers on QNX. | |
| CMake 3.0 and above recognize that the QNX qcc compiler driver is | |
| different from the GNU compiler. | |
| CMake now prefers to present this to projects by setting the | |
| :variable:`CMAKE_<LANG>_COMPILER_ID` variable to ``QCC`` instead | |
| of ``GNU``. However, existing projects may assume the compiler id for | |
| QNX qcc is just ``GNU`` as it was in CMake versions prior to 3.0. | |
| Therefore this policy determines for QNX qcc 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 the ``GNU`` compiler id | |
| for the qcc and QCC compiler drivers. The NEW behavior for this policy | |
| is to use the ``QCC`` compiler id for those drivers. | |
| This policy was introduced in CMake version 3.0. Use the | |
| :command:`cmake_policy` command to set this policy to OLD or NEW explicitly. | |
| Unlike most policies, CMake version |release| does *not* warn | |
| by default when this policy is not set and simply uses OLD behavior. | |
| See documentation of the | |
| :variable:`CMAKE_POLICY_WARNING_CMP0047 <CMAKE_POLICY_WARNING_CMP<NNNN>>` | |
| variable to control the warning. | |
| .. include:: DEPRECATED.txt |