obudpst: fix compatibility with CMake 4

CMake 4 has dropped compatibility with old versions < 3.5, and will
drop compatibility for < 3.10 in the future. Update the minimum required
CMake version accordingly.

Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>

obudpst/patches/500-cmake-fix-compatibility-with-CMake-4.patch

@@ -0,0 +1,31 @@
+From dac144fb25e4aaaf4e965f066113dc265d0ee524 Mon Sep 17 00:00:00 2001
+From: Andreas Gnau <andreas.gnau@iopsys.eu>
+Date: Mon, 15 Dec 2025 09:02:10 +0100
+Subject: [PATCH] cmake: fix compatibility with CMake 4
+
+CMake 4 has dropped compatibility with old versions < 3.5, and will drop
+compatibility for < 3.10 in the future. Update the minimum required
+CMake version accordingly so that both old and new versions will work.
+
+Upstream-Status: Submitted [https://github.com/BroadbandForum/obudpst/pull/23]
+Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 83bee0290741..cb66227aa62f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -27,7 +27,7 @@
+ # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ # POSSIBILITY OF SUCH DAMAGE.
+ project(OB-UDPST)
+-cmake_minimum_required(VERSION 3.0)
++cmake_minimum_required(VERSION 3.0...3.10)
+ if(${CMAKE_VERSION} VERSION_GREATER "3.3.0")
+         cmake_policy(SET CMP0057 NEW)
+ endif()
+-- 
+2.52.0
+