diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5ac4a2f95..de0bb3a5e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -392,9 +392,9 @@ else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DGTEST_HAS_TR1_TUPLE=0")
   endif()
   if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_C_COMPILER_VERSION VERSION_LESS 4.8))
-    set(DEBUG_FLAGS "-g3 -Og")
+    set(DEBUG_FLAGS "-g3 -Og -Wall -fprofile-arcs -ftest-coverage --coverage")
   else()
-    set(DEBUG_FLAGS "-g3 -O0")
+    set(DEBUG_FLAGS "-g3 -O0 -Wall -fprofile-arcs -ftest-coverage --coverage")
   endif()
 
   if(NOT DEFINED USE_LTO_DEFAULT)