upgrade minimum cmake version (#255)

This will silence the following warning:

CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f18615e828b554f417e10d4c198b9efa05d730fe..67bd9fa70a5bd8329fcda683000eabbe62d8e686 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.0.0)
+cmake_minimum_required (VERSION 3.5)
 
 include (utils.cmake)