added "-ggdb3" to GCC flags in Debug configuratin. Hopefully, it will solve...

added "-ggdb3" to GCC flags in Debug configuratin. Hopefully, it will solve problems with tracing code with debuggers

CMakeLists.txt

@@ -946,7 +946,7 @@ if(CMAKE_COMPILER_IS_GNUCXX)
     #endif()
 
     set(EXTRA_C_FLAGS_RELEASE "${EXTRA_C_FLAGS_RELEASE} -DNDEBUG")
-    set(EXTRA_C_FLAGS_DEBUG "${EXTRA_C_FLAGS_DEBUG} -O0 -DDEBUG -D_DEBUG")
+    set(EXTRA_C_FLAGS_DEBUG "${EXTRA_C_FLAGS_DEBUG} -O0 -ggdb3 -DDEBUG -D_DEBUG")
 endif()
 
 # Extra link libs if the user selects building static libs: