diff --git a/bsp/at91sam9260/rtconfig.h b/bsp/at91sam9260/rtconfig.h
index 176c84c0a0..4a4b08d0ab 100755
--- a/bsp/at91sam9260/rtconfig.h
+++ b/bsp/at91sam9260/rtconfig.h
@@ -64,7 +64,7 @@
 
 /* SECTION: the runtime libc library */
 /* the runtime libc library */
-#define RT_USING_NEWLIB
+#define RT_USING_LIBC
 #define RT_USING_PTHREADS
 
 /* Using Module System */
diff --git a/bsp/mini2440/rtconfig.h b/bsp/mini2440/rtconfig.h
index 2e4c05bbce..b85996ab24 100644
--- a/bsp/mini2440/rtconfig.h
+++ b/bsp/mini2440/rtconfig.h
@@ -87,8 +87,8 @@
 // </section>
 
 // <section name="LIBC" description="C Runtime library setting" default="always" >
-// <bool name="RT_USING_NEWLIB" description="Using newlib library, only available under GNU GCC" default="true" />
-#define RT_USING_NEWLIB
+// <bool name="RT_USING_LIBC" description="Using C library" default="true" />
+#define RT_USING_LIBC
 // <bool name="RT_USING_PTHREADS" description="Using POSIX threads library" default="true" />
 #define RT_USING_PTHREADS
 // </section>
diff --git a/bsp/stm32f0x/rtconfig.h b/bsp/stm32f0x/rtconfig.h
index c96e27df30..f72cdfa6d3 100644
--- a/bsp/stm32f0x/rtconfig.h
+++ b/bsp/stm32f0x/rtconfig.h
@@ -87,20 +87,7 @@
 #define FINSH_USING_DESCRIPTION
 
 /* SECTION: libc management */
-#ifdef __CC_ARM
-/* #define RT_USING_MINILIBC */
-/* #define RT_USING_NEWLIB */
-#endif
-
-#ifdef __ICCARM__
-/* #define RT_USING_MINILIBC */
-/* #define RT_USING_NEWLIB */
-#endif
-
-#ifdef __GNUC__
-/* #define RT_USING_MINILIBC */
-#define RT_USING_NEWLIB
-#endif
+#define RT_USING_LIBC
 
 /* SECTION: device filesystem */
 /* #define RT_USING_DFS */
diff --git a/bsp/zynq7000/rtconfig.h b/bsp/zynq7000/rtconfig.h
index bc015321d0..bf078f7045 100644
--- a/bsp/zynq7000/rtconfig.h
+++ b/bsp/zynq7000/rtconfig.h
@@ -103,8 +103,8 @@
 // </section>
 
 // <section name="LIBC" description="C Runtime library setting" default="always" >
-// <bool name="RT_USING_NEWLIB" description="Using newlib library, only available under GNU GCC" default="true" />
-#define RT_USING_NEWLIB
+// <bool name="RT_USING_LIBC" description="Using C library" default="true" />
+#define RT_USING_LIBC
 // <bool name="RT_USING_PTHREADS" description="Using POSIX threads library" default="true" />
 #define RT_USING_PTHREADS
 // </section>