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try_compile: Propagate platform variables in project-mode too

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Add policy CMP0137 to propagate both our builtin variables and those
listed by `CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` to `try_compile`
whole-project builds.

Inspired-by: Alexander Neumann <Alexander.Neumann@hamburg.de>
Fixes: #23219
This commit is contained in:
Brad King
2022-05-16 10:04:48 -04:00
parent 364fde65ee
commit 4843a37676
14 changed files with 83 additions and 2 deletions
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11
Help/command/try_compile.rst
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@@ -7,6 +7,8 @@ try_compile
Try building some code.
.. _`Try Compiling Whole Projects`:
Try Compiling Whole Projects
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -25,6 +27,15 @@ will not be deleted after this command is run. Specify ``<targetName>`` to
build a specific target instead of the ``all`` or ``ALL_BUILD`` target. See
below for the meaning of other options.
.. versionchanged:: 3.24
CMake variables describing platform settings, and those listed by the
:variable:`CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` variable, are propagated
into the project's build configuration. See policy :policy:`CMP0137`.
Previously this was only done by the
:ref:`source file <Try Compiling Source Files>` signature.
.. _`Try Compiling Source Files`:
Try Compiling Source Files
^^^^^^^^^^^^^^^^^^^^^^^^^^