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Help: Add 3.30 release notes for project variable updates

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Add a 3.30.3 release note for commit c1ece78d11 (project: non cache
<project> prefix variables are also created, 2024-08-27, v3.30.3~2^2).
Prepare a 3.30.4 release note for commit 86ad7cc886 (project: Only
define non-cache vars if already defined, 2024-09-15).
This commit is contained in:
Brad King
2024-09-26 09:38:30 -04:00
parent 3c2605dece
commit 73a8f944b2
1 changed files with 17 additions and 0 deletions
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Help/release/3.30.rst
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@@ -258,8 +258,25 @@ Changes made since CMake 3.30.0 include the following.
3.30.3
------
* The :command:`project(<PROJECT-NAME>)` command now sets
:variable:`<PROJECT-NAME>_SOURCE_DIR`, :variable:`<PROJECT-NAME>_BINARY_DIR`,
and :variable:`<PROJECT-NAME>_IS_TOP_LEVEL` as normal variables in addition
to setting them as cache entries. This is needed to preserve support for
some :module:`FetchContent` use cases under policy :policy:`CMP0169`'s
NEW behavior.
* The :module:`FindPython` and :module:`FindPython3` modules now define,
respectively, the ``Python_DEFINITIONS`` and ``Python3_DEFINITIONS``
variables on Windows to support development with the free threaded
version of Python. The :prop_tgt:`INTERFACE_COMPILE_DEFINITIONS` target
property is also defined for the various targets provided by these modules.
.. 3.30.4 (unreleased)
* The :command:`project(<PROJECT-NAME>)` command now sets
:variable:`<PROJECT-NAME>_SOURCE_DIR`, :variable:`<PROJECT-NAME>_BINARY_DIR`,
and :variable:`<PROJECT-NAME>_IS_TOP_LEVEL` as normal variables only if they
are already set as normal variables when :command:`project` is invoked.
Cache entries by the same names are always set as before.
This refines 3.30.3's behavior change to restore behavior of nested
directories that call :command:`project` with the same project name.