message: Fix build on Android (CMake < 3.7).
  VERSION_GREATER_EQUAL is not available on older CMake versions.
diff: cmake_minimum_required(VERSION 3.0)
  -if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.15)
  +if (CMAKE_VERSION VERSION_GREATER 3.15 OR CMAKE_VERSION VERSION_EQUAL 3.15)
  cmake_policy(SET CMP0091 NEW) # Enables use of MSVC_RUNTIME_LIBRARY
  cmake_policy(SET CMP0092 NEW) # Enables clean /W4 override for MSVC
  endif()
  