CMP0089ΒΆ
New in version 3.15.
Compiler id for IBM Clang-based XL compilers is now XLClang
.
CMake 3.15 and above recognize that IBM's Clang-based XL compilers
that define __ibmxl__
are a new front-end distinct from xlc
with a different command line and set of capabilities.
CMake now prefers to present this to projects by setting the
CMAKE_<LANG>_COMPILER_ID
variable to XLClang
instead
of XL
. However, existing projects may assume the compiler id for
Clang-based XL is just XL
as it was in CMake versions prior to 3.15.
Therefore this policy determines for Clang-based XL compilers which
compiler id to report in the CMAKE_<LANG>_COMPILER_ID
variable after language <LANG>
is enabled by the project()
or enable_language()
command. The policy must be set prior
to the invocation of either command.
The OLD
behavior for this policy is to use compiler id XL
. The
NEW
behavior for this policy is to use compiler id XLClang
.
This policy was introduced in CMake version 3.15.
It may be set by cmake_policy()
or cmake_minimum_required()
.
If it is not set, CMake does not warn by default, and uses OLD
behavior.
See documentation of the
CMAKE_POLICY_WARNING_CMP0089
variable to control the warning.
Note
The OLD
behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.