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