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Help: Add 4.0 release note about file path case sensitivity on Windows

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Since KWSys commit `4feb470ab` (SystemTools: Remove GetActualCaseForPath
from CollapseFullPath, 2024-10-23), imported by commit ede7f2afa6 (KWSys
2024-10-24 (e1acde2e), 2024-10-24, v4.0.0-rc1~589^2~1^2), the KWSys
`CollapseFullPath` function that we use to normalize source file paths
no longer looks up the on-disk case of file paths.  This change was
intentionally made to reduce unnecessary disk accesses.  The change may
affect Windows-only projects that were never built on a case sensitive
filesystem.  Call out the change in the 4.0 release notes.

Issue: #26854
This commit is contained in:
Brad King
2025-04-10 17:21:13 -04:00
parent ee515b2aa8
commit 1fb7067b6e
1 changed files with 7 additions and 0 deletions
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Help/release/4.0.rst
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@@ -241,6 +241,13 @@ Other Changes
installed in ``/usr/local`` should pass ``-DCMAKE_OSX_SYSROOT=macosx``,
or ``export SDKROOT=macosx``, when not building with Homebrew tools.
* On Windows, file paths named in project code, e.g., in ``CMakeLists.txt``,
are no longer automatically converted to their on-disk upper/lower case.
Projects are expected to spell source file paths consistently using
their canonical case, e.g., in calls to :command:`add_library`,
:command:`set_property(SOURCE)`, or :command:`set_source_files_properties`.
This matches the behavior on platforms with case-sensitive filesystems.
* On AIX, ``SHARED`` library targets now produce a shared library archive
by default. See policy :policy:`CMP0182`.