diff --git a/components/cplusplus/crt_init.c b/components/cplusplus/crt_init.c
index ebcc4af37d48c1319699b0ea42069ec9cd55c220..12c92dc6fbaabed2fb5cc45ccc2b27279d38cb2b 100755
--- a/components/cplusplus/crt_init.c
+++ b/components/cplusplus/crt_init.c
@@ -44,11 +44,11 @@ void _fini()
 {
 }
 
-WEAK void *__dso_handle = 0;
+RT_WEAK void *__dso_handle = 0;
 
 #endif
 
-WEAK
+RT_WEAK
 int cplusplus_system_init(void)
 {
 #if defined(__GNUC__) && !defined(__CC_ARM)
diff --git a/components/dfs/filesystems/romfs/romfs.c b/components/dfs/filesystems/romfs/romfs.c
index ff4b35305929e7adf44955005cc1d3cd02d5fd8e..a571c36ec691ac32ab3eb15668995ed35bf3aedb 100644
--- a/components/dfs/filesystems/romfs/romfs.c
+++ b/components/dfs/filesystems/romfs/romfs.c
@@ -39,13 +39,13 @@ const static unsigned char _dummy_txt[] =
     0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x61,0x20,0x66,0x69,0x6c,0x65,0x21,0x0d,0x0a,
 };
 
-const struct romfs_dirent WEAK _root_dirent[] =
+const struct romfs_dirent RT_WEAK _root_dirent[] =
 {
     {ROMFS_DIRENT_DIR, "dummy", (rt_uint8_t *)_dummy, sizeof(_dummy)/sizeof(_dummy[0])},
     {ROMFS_DIRENT_FILE, "dummy.txt", _dummy_txt, sizeof(_dummy_txt)},
 };
 
-const struct romfs_dirent WEAK romfs_root =
+const struct romfs_dirent RT_WEAK romfs_root =
 {
     ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_root_dirent, sizeof(_root_dirent)/sizeof(_root_dirent[0])
 };
diff --git a/components/net/lwip-2.0.0/src/arch/sys_arch.c b/components/net/lwip-2.0.0/src/arch/sys_arch.c
index 7db873f1308a889ca29bcec6563d99a6cd5be268..c5b4dbbf47f246270f54033e60e24648031f1172 100644
--- a/components/net/lwip-2.0.0/src/arch/sys_arch.c
+++ b/components/net/lwip-2.0.0/src/arch/sys_arch.c
@@ -600,7 +600,7 @@ u32_t sys_now(void)
     return rt_tick_get() * (1000 / RT_TICK_PER_SECOND);
 }
 
-WEAK
+RT_WEAK
 void mem_init(void)
 {
 }
diff --git a/components/net/lwip-2.0.2/src/arch/sys_arch.c b/components/net/lwip-2.0.2/src/arch/sys_arch.c
index 6bfcf8067ea5c1ce4ccee148dcc9e44a9b184729..bb809ac6ad9119391d288e15749c0666c68eb22d 100644
--- a/components/net/lwip-2.0.2/src/arch/sys_arch.c
+++ b/components/net/lwip-2.0.2/src/arch/sys_arch.c
@@ -602,7 +602,7 @@ u32_t sys_now(void)
 }
 
 
-WEAK
+RT_WEAK
 void mem_init(void)
 {
 }
diff --git a/include/rtdef.h b/include/rtdef.h
index 005c6b846c03e886539681afdf422c8abc86bafd..e44f39fdd86f4372d483abf8c69c388e485fd418 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -97,7 +97,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
-    #define WEAK                        __weak
+    #define RT_WEAK                     __weak
     #define rt_inline                   static __inline
     /* module compiling */
     #ifdef RT_USING_MODULE
@@ -113,7 +113,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_USED                     __root
     #define PRAGMA(x)                   _Pragma(#x)
     #define ALIGN(n)                    PRAGMA(data_alignment=n)
-    #define WEAK                        __weak
+    #define RT_WEAK                     __weak
     #define rt_inline                   static inline
     #define RTT_API
 
@@ -133,7 +133,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
-    #define WEAK                        __attribute__((weak))
+    #define RT_WEAK                     __attribute__((weak))
     #define rt_inline                   static __inline
     #define RTT_API
 #elif defined (__ADSPBLACKFIN__)        /* for VisualDSP++ Compiler */
@@ -142,7 +142,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
-    #define WEAK                        __attribute__((weak))
+    #define RT_WEAK                     __attribute__((weak))
     #define rt_inline                   static inline
     #define RTT_API
 #elif defined (_MSC_VER)
@@ -151,7 +151,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_UNUSED
     #define RT_USED
     #define ALIGN(n)                    __declspec(align(n))
-    #define WEAK
+    #define RT_WEAK
     #define rt_inline                   static __inline
     #define RTT_API
 #elif defined (__TI_COMPILER_VERSION__)
@@ -164,7 +164,7 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
     #define RT_USED
     #define PRAGMA(x)                   _Pragma(#x)
     #define ALIGN(n)
-    #define WEAK
+    #define RT_WEAK
     #define rt_inline                   static inline
     #define RTT_API
 #else
diff --git a/src/kservice.c b/src/kservice.c
index c694037dd20c45bc52906824a55c08a9e110b307..4ffccaf341ce5ac2d08787e310dd3188275a70ea 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -1101,7 +1101,7 @@ rt_device_t rt_console_set_device(const char *name)
 RTM_EXPORT(rt_console_set_device);
 #endif
 
-WEAK void rt_hw_console_output(const char *str)
+RT_WEAK void rt_hw_console_output(const char *str)
 {
     /* empty console output */
 }