[Buildroot] [PATCH 1/1] package/libfreeglut: override minimum CMake version for CMake 4 compatibility

[Fiona Klute]

From: "Fiona Klute (WIWA)" <fiona.klute at gmx.de>

With CMake 4 building package/libfreeglut 3.4.0 fails, because
CMAKE_MINIMUM_REQUIRED is set to 3.0.0:

CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.

Overriding the minimum version allows the package to build.

Signed-off-by: Fiona Klute (WIWA) <fiona.klute at gmx.de>
---
Tested with CMake version 4.1.1. Generally freeglut upstream seems to
try for wide CMake version compatibility, see the changes to
CMakeLists.txt since 3.4.0:

* increase requirement to 3.1:
  https://github.com/freeglut/freeglut/commit/f44eb886a513009b9b0c169ea274369c4dac9a04
* increase requirement to 3.11 (still significantly older than package/cmake):
  https://github.com/freeglut/freeglut/commit/cd60d728b807c590b16884387ace17d334f364e2
* restore backwards-compatibility with 3.1:
  https://github.com/freeglut/freeglut/commit/a9219b1cbf752bb1e963257ab04f3c70c0829c2e
* add 3.5 as supported minimum: https://github.com/freeglut/freeglut/commit/2294389397912c9a6505a88221abb7dca0a4fb79

Should make it safe to assume 3.5 is expected to work.

 package/libfreeglut/libfreeglut.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/libfreeglut/libfreeglut.mk b/package/libfreeglut/libfreeglut.mk
index 09309aeceb..7c27113331 100644
--- a/package/libfreeglut/libfreeglut.mk
+++ b/package/libfreeglut/libfreeglut.mk
@@ -17,7 +17,8 @@ LIBFREEGLUT_DEPENDENCIES = \
 	xlib_libXrandr \
 	xlib_libXxf86vm
 
-LIBFREEGLUT_CONF_OPTS = -DFREEGLUT_BUILD_DEMOS=OFF
+LIBFREEGLUT_CONF_OPTS = -DFREEGLUT_BUILD_DEMOS=OFF \
+	-DCMAKE_POLICY_VERSION_MINIMUM=3.5
 
 # package depends on X.org which depends on !BR2_STATIC_LIBS
 ifeq ($(BR2_SHARED_LIBS),y)
-- 
2.51.0