package/libebml: fix cmake 4 compatibility

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/libebml/0001-drop-CMake-older-than-3.5.patch

@@ -0,0 +1,29 @@
+From 6725c5f0169981cb0bd2ee124fbf0d8ca30b762d Mon Sep 17 00:00:00 2001
+From: Steve Lhomme <slhomme@matroska.org>
+Date: Sat, 24 Feb 2024 08:33:56 +0100
+Subject: [PATCH] drop CMake older than 3.5
+
+It generates a warning with newer versions of CMake.
+3.4 was released in 2015. We require C++17 with compilers only available in 2017/2018.
+If your CMake is older than your toolchain, you have a problem.
+
+There's no need to support legacy CMake going forward in libebml 2.
+
+Upstream: https://github.com/Matroska-Org/libebml/commit/6725c5f0169981cb0bd2ee124fbf0d8ca30b762d
+
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
+[backported to version 1.4.5]
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 11ee059a..c7b969a8 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 3.1.2)
++cmake_minimum_required(VERSION 3.5)
+ 
+ project(ebml VERSION 1.4.5)
+