diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ba93bcdd..7d874d53f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2384,6 +2384,11 @@ foreach(_OPT ${ALLOPTIONS})
   string(RANDOM LENGTH ${_PADLEN} ALPHABET " " _PADDING)
   message_tested_option(${_OPT} ${_PADDING})
 endforeach()
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+  message(STATUS "")
+  message(STATUS " CMAKE_C_FLAGS_DEBUG:   ${CMAKE_C_FLAGS_DEBUG}")
+  message(STATUS " CMAKE_CXX_FLAGS_DEBUG: ${CMAKE_CXX_FLAGS_DEBUG}")
+endif()
 message(STATUS "")
 message(STATUS " CFLAGS:        ${CMAKE_C_FLAGS}")
 message(STATUS " EXTRA_CFLAGS:  ${EXTRA_CFLAGS}")