Add debug message

Author: BDoignies

CMakeLists.txt

@@ -28,9 +28,9 @@ message(STATUS "DGtal found.")
 
 
 
- # -----------------------------------------------------------------------------
- # CPP17
- # -----------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
+# CPP20
+# -----------------------------------------------------------------------------
 set(DGTALTOOLS_CMAKE_CXX_STANDARD_MIN_REQUIRED 20)
  if(NOT CMAKE_CXX_STANDARD)
    set(CMAKE_CXX_STANDARD ${DGTALTOOLS_CMAKE_CXX_STANDARD_MIN_REQUIRED})
@@ -44,7 +44,7 @@ endif()
 if(NOT CMAKE_CXX_STANDARD_REQUIRED)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
-
+message(STATUS "C++ standard set to ${CMAKE_CXX_STANDARD}")