rsadowski e8035d4760 Update CMake to 4.1.2 ...

Major update from 3.31.8 to 4.1.2.

CMake 4.0 introduces a breaking change: compatibility with versions older than
3.5 has been removed. Projects calling cmake_minimum_required() or
cmake_policy() with versions < 3.5 now error out.

To maintain compatibility with existing ports during the transition, the cmake
module now provides MODCMAKE_POLICY_VERSION_OVERRIDE (idea from sthen@)
support:

- MODCMAKE_POLICY_VERSION_OVERRIDE ?= No
- MODCMAKE_POLICY_VERSION_OVERRIDE_VER ?= 3.5

When MODCMAKE_POLICY_VERSION_OVERRIDE is set to "yes", CMake is instructed to
accept policy versions down to the specified minimum (default 3.5) via
-DCMAKE_POLICY_VERSION_MINIMUM. This allows older ports to build while
acknowledging they may use deprecated features.

https://cmake.org/cmake/help/latest/release/4.0.html
https://cmake.org/cmake/help/latest/release/4.1.html

OK sthen@

2026-02-13 12:02:13 +00:00

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