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 |