Require a more modern CMake

So it works with CMake 4

See #391

Author: joto

CMakeLists.txt

@@ -6,7 +6,7 @@
 #
 #-----------------------------------------------------------------------------
 
-cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.10.0 FATAL_ERROR)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 
 
@@ -36,14 +36,7 @@ set(CMAKE_CONFIGURATION_TYPES "Debug;Release;RelWithDebInfo;MinSizeRel;Dev;Cover
 #
 #-----------------------------------------------------------------------------
 
-project(libosmium)
-
-set(LIBOSMIUM_VERSION_MAJOR 2)
-set(LIBOSMIUM_VERSION_MINOR 22)
-set(LIBOSMIUM_VERSION_PATCH 0)
-
-set(LIBOSMIUM_VERSION
-    "${LIBOSMIUM_VERSION_MAJOR}.${LIBOSMIUM_VERSION_MINOR}.${LIBOSMIUM_VERSION_PATCH}")
+project(libosmium VERSION 2.22.0 LANGUAGES CXX C)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)