diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ccb2e9de..207b1ec1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -407,25 +407,32 @@ if(NOT (CMAKE_VERSION VERSION_LESS "3.1"))
     set(CMAKE_CXX_EXTENSIONS OFF)
 else()
     add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,C>:-std=gnu11>")
+    set(CMAKE_C_STANDARD 11)   # set variable just for reporting
     if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU") AND NOT WIN32)
         if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "6.1.1")
             add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++11>")
+            set(CMAKE_CXX_STANDARD 11)   # set variable just for reporting
         else()
             add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++14>")
+            set(CMAKE_CXX_STANDARD 14)   # set variable just for reporting
         endif()
     endif()
     if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
         if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
             if(CLANG_VERSION VERSION_LESS "600")
                 add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++11>")
+                set(CMAKE_CXX_STANDARD 11)
             else()
                 add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++14>")
+                set(CMAKE_CXX_STANDARD 14)
             endif()
         else()
             if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.5.0")
                 add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++11>")
+                set(CMAKE_CXX_STANDARD 11)
             else()
                 add_compile_options("$<$<STREQUAL:$<TARGET_PROPERTY:LINKER_LANGUAGE>,CXX>:-std=c++14>")
+                set(CMAKE_CXX_STANDARD 14)
             endif()
         endif()
     endif()