Description: increase minimal requested version of cmake (-> cmake4)
Index: libbtbb/CMakeLists.txt
===================================================================
--- libbtbb.orig/CMakeLists.txt	2025-10-18 19:38:32.097582315 +0200
+++ libbtbb/CMakeLists.txt	2025-10-18 19:42:48.428030663 +0200
@@ -20,7 +20,7 @@
 #
 #top level cmake project for libbtbb lib + tools
 
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.12)
 project(libbtbb_all)
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/modules)