Help/policy/CMP0047.rst
.. |REMOVED_IN_CMAKE_VERSION| replace:: 4.0 .. include:: include/REMOVED_PROLOGUE.rst
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.
.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.0 .. |WARNED_OR_DID_NOT_WARN| replace:: did not warn by default .. include:: include/REMOVED_EPILOGUE.rst
See documentation of the
:variable:CMAKE_POLICY_WARNING_CMP0047 <CMAKE_POLICY_WARNING_CMP<NNNN>>
variable to control the warning in CMake versions before 4.0.