diff --git a/CMakeLists.txt b/CMakeLists.txt
index f2024d27..aa029b75 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,10 +7,9 @@
 
 #https://cmake.org/cmake-tutorial/
 #https://cmake.org/cmake/help/v3.3/module/CMakeDependentOption.html?highlight=cmakedependentoption
-# use CACHE FORCE  or set(USE_meganz_mingw_std_threads ON) or delete CMakecache.txt or the entirely build dir
+# use CACHE FORCE  or set(ENABLE_MINGW_STD_THREADS_WITH_MEGANZ ON) or delete CMakecache.txt or the entirely build dir
 # if your changes don't execute
-option(USE_meganz_mingw_std_threads "replaced boost.thread with meganz's mingw-std-threads." OFF)
-option(USE_UNICODE "Use Unicode Character Set" ON)
+option(ENABLE_MINGW_STD_THREADS_WITH_MEGANZ "replaced boost.thread with meganz's mingw-std-threads." OFF)
 option(ENABLE_PNG "Enable the use of PNG" OFF)
 option(LIBPNG_FROM_OS "Use libpng from operating system." ON)
 option(ENABLE_JPEG "Enable the use of JPEG" OFF)
@@ -18,15 +17,12 @@ option(LIBJPEG_FROM_OS "Use libjpeg from operating system." ON)
 option(CMAKE_VERBOSE_PREPROCESSOR "Show annoying debug messages during compilation." OFF)
 option(CMAKE_STOP_VERBOSE_PREPROCESSOR "Stop compilation after showing the annoying debug messages." ON)
 option(BUILD_NANA_DEMOS "Build all the demos form the nana_demo repository." OFF)
-option(CMAKE_STD_make_unique_NOT_SUPPORTED "Add support for make_unique<>()." OFF)
-#set(CMAKE_STD_make_unique_NOT_SUPPORTED OFF)
 
 # set compile  flags
 if(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall")
 endif(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
 
-
 # move this to the end ??
 if(BIICODE)
     # prepare BII_LIB_SRC
@@ -40,6 +36,7 @@ endif(BIICODE)
 project(nana)
 cmake_minimum_required(VERSION 2.8)
 
+add_definitions(-DNANA_IGNORE_CONF)
 
 if(WIN32)
     add_definitions(-DWIN32)
@@ -54,22 +51,13 @@ if(WIN32)
 	endif(MSVC)
 
     if(MINGW)
-        add_definitions(-DMINGW)
-        #Find PNG
-        if(USE_meganz_mingw_std_threads)
-            add_definitions(-DUSE_github_com_meganz_mingw_std_threads)
-            # remove_definitions()
-        endif(USE_meganz_mingw_std_threads)
+        if(ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
+            add_definitions(-DNANA_ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
+        endif(ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
     endif(MINGW)
-
 endif(WIN32)
 
 
-#Unicode
-if(USE_UNICODE)
-    add_definitions(-DNANA_UNICODE)
-endif(USE_UNICODE)
-
 if(APPLE)
     add_definitions(-DAPPLE)
     include_directories(/opt/X11/include/)
@@ -117,11 +105,6 @@ if(CMAKE_VERBOSE_PREPROCESSOR)
     add_definitions(-DVERBOSE_PREPROCESSOR)
 endif(CMAKE_VERBOSE_PREPROCESSOR)
 
-# STD_make_unique_NOT_SUPPORTED
-if(CMAKE_STD_make_unique_NOT_SUPPORTED)
-    add_definitions(-DSTD_make_unique_NOT_SUPPORTED)
-endif(CMAKE_STD_make_unique_NOT_SUPPORTED)
-
 
 set(NANA_SOURCE_DIR ${CMAKE_SOURCE_DIR}/source)
 set(NANA_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/include)
diff --git a/include/nana/c++defines.hpp b/include/nana/c++defines.hpp
index d22c5bcc..a2cf5e0e 100644
--- a/include/nana/c++defines.hpp
+++ b/include/nana/c++defines.hpp
@@ -34,10 +34,6 @@
  *	- STD_NUMERIC_CONVERSIONS_NOT_SUPPORTED  (MinGW with GCC < 4.8.1)
  *	- STD_NUMERIC_CONVERSIONS_NOT_SUPPORTED (MinGW with GCC < 4.8.1)
  *	- STD_TO_STRING_NOT_SUPPORTED (MinGW with GCC < 4.8)
- *	- VERBOSE_PREPROCESSOR, STOP_VERBOSE_PREPROCESSOR
- *	- STD_make_unique_NOT_SUPPORTED  (MinGW with GCC < 4.8.1)
- *	  or __cpp_lib_make_unique
- *	http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0096r0.html#detail.cpp14.n3656
  */
 
 #ifndef NANA_CXX_DEFINES_INCLUDED
@@ -172,13 +168,4 @@
 	#endif
 #endif
 
-#if !defined(VERBOSE_PREPROCESSOR)
-    //#define VERBOSE_PREPROCESSOR
-#endif
-
-#if !defined(STOP_VERBOSE_PREPROCESSOR)
-	#define STOP_VERBOSE_PREPROCESSOR
-#endif
-
-
 #endif  // NANA_CXX_DEFINES_INCLUDED
diff --git a/include/nana/config.hpp b/include/nana/config.hpp
index 27b1a087..194f0b9a 100644
--- a/include/nana/config.hpp
+++ b/include/nana/config.hpp
@@ -14,6 +14,9 @@
  *	External libraries:
  *	- NANA_LIBPNG, USE_LIBPNG_FROM_OS
  *	- NANA_LIBJPEG, USE_LIBJPEG_FROM_OS
+ *
+ *	messages:
+ *	- VERBOSE_PREPROCESSOR, STOP_VERBOSE_PREPROCESSOR
  */
 
 #ifndef NANA_CONFIG_HPP
@@ -21,6 +24,10 @@
 
 #include "c++defines.hpp"
 
+//The basic configurations are ignored when NANA_IGNORE_CONF is defined.
+//The NANA_IGNORE_CONF may be specified by CMake generated makefile.
+#ifndef NANA_IGNORE_CONF
+
 // Here defines some flags that tell Nana what features will be supported.
 
 
@@ -60,5 +67,13 @@
 	#endif
 #endif
 
+#if !defined(VERBOSE_PREPROCESSOR)
+//#define VERBOSE_PREPROCESSOR
+#endif
 
+#if !defined(STOP_VERBOSE_PREPROCESSOR)
+#define STOP_VERBOSE_PREPROCESSOR
+#endif
+
+#endif  // NANA_IGNORE_CONFIG
 #endif  // NANA_CONFIG_HPP