You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
1.2 KiB
31 lines
1.2 KiB
CMP0138
|
|
-------
|
|
|
|
.. versionadded:: 3.24
|
|
|
|
:module:`CheckIPOSupported` uses flags from calling project.
|
|
|
|
The :module:`CheckIPOSupported` module :command:`check_ipo_supported`
|
|
command compiles a test project to determine whether the toolchain
|
|
supports :prop_tgt:`INTERPROCEDURAL_OPTIMIZATION`. CMake 3.23 and
|
|
below run the check with the default values of the
|
|
:variable:`CMAKE_<LANG>_FLAGS` and :variable:`CMAKE_<LANG>_FLAGS_<CONFIG>`
|
|
variables for the current environment and toolchain settings.
|
|
However, some projects may modify these flag variables to add
|
|
flags that affect availability of the toolchain's IPO features.
|
|
CMake 3.24 and above prefer to honor the calling project's values
|
|
for these variables. This policy provides compatibility for projects
|
|
that have not been updated to expect this behavior.
|
|
|
|
The ``OLD`` behavior for this policy is to ignore the calling
|
|
project's values of :variable:`CMAKE_<LANG>_FLAGS` and
|
|
:variable:`CMAKE_<LANG>_FLAGS_<CONFIG>`. The ``NEW`` behavior
|
|
for this policy is to use the values of those variables as
|
|
compiler flags in the test project.
|
|
|
|
.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.24
|
|
.. |WARNS_OR_DOES_NOT_WARN| replace:: does *not* warn
|
|
.. include:: STANDARD_ADVICE.txt
|
|
|
|
.. include:: DEPRECATED.txt
|