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- 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
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