diff --git a/components/finsh/finsh_api.h b/components/finsh/finsh_api.h
index 6bbe410b0bc88c43fc43779a0ef3860f524d62c6..3b7c77de2ae7e2a437c82080d00e4bbee9171f59 100644
--- a/components/finsh/finsh_api.h
+++ b/components/finsh/finsh_api.h
@@ -102,20 +102,20 @@ struct finsh_syscall* finsh_syscall_lookup(const char* name);
                 };
 
         #else
-            #define FINSH_FUNCTION_EXPORT_CMD(name, cmd, desc)      \
-                const char __fsym_##cmd##_name[] SECTION(".rodata.name") = #cmd;   \
-                const char __fsym_##cmd##_desc[] SECTION(".rodata.name") = #desc;  \
-                const struct finsh_syscall __fsym_##cmd SECTION("FSymTab")= \
+            #define FINSH_FUNCTION_EXPORT_CMD(name, cmd, desc)                      \
+                const char __fsym_##cmd##_name[] SECTION(".rodata.name") = #cmd;    \
+                const char __fsym_##cmd##_desc[] SECTION(".rodata.name") = #desc;   \
+                RT_USED const struct finsh_syscall __fsym_##cmd SECTION("FSymTab")= \
                 {                           \
                     __fsym_##cmd##_name,    \
                     __fsym_##cmd##_desc,    \
                     (syscall_func)&name     \
                 };
 
-            #define FINSH_VAR_EXPORT(name, type, desc)              \
-                const char __vsym_##name##_name[] SECTION(".rodata.name") = #name; \
-                const char __vsym_##name##_desc[] SECTION(".rodata.name") = #desc; \
-                const struct finsh_sysvar __vsym_##name SECTION("VSymTab")= \
+            #define FINSH_VAR_EXPORT(name, type, desc)                              \
+                const char __vsym_##name##_name[] SECTION(".rodata.name") = #name;  \
+                const char __vsym_##name##_desc[] SECTION(".rodata.name") = #desc;  \
+                RT_USED const struct finsh_sysvar __vsym_##name SECTION("VSymTab")= \
                 {                           \
                     __vsym_##name##_name,   \
                     __vsym_##name##_desc,   \
@@ -139,10 +139,10 @@ struct finsh_syscall* finsh_syscall_lookup(const char* name);
             #define FINSH_VAR_EXPORT(name, type, desc)              \
                 const char __vsym_##name##_name[] = #name;          \
                 __declspec(allocate("VSymTab")) const struct finsh_sysvar __vsym_##name = \
-                {                           \
-                    __vsym_##name##_name,   \
-                    type,                   \
-                    (void*)&name            \
+                {                                                                         \
+                    __vsym_##name##_name,                                                 \
+                    type,                                                                 \
+                    (void*)&name                                                          \
                 };
 
         #elif defined(__TI_COMPILER_VERSION__)
@@ -159,28 +159,28 @@ struct finsh_syscall* finsh_syscall_lookup(const char* name);
                 __TI_FINSH_EXPORT_VAR(__vsym_##name);               \
                 const char __vsym_##name##_name[] = #name;          \
                 const struct finsh_sysvar __vsym_##name =           \
-                {                           \
-                    __vsym_##name##_name,   \
-                    type,                   \
-                    (void*)&name            \
+                {                                                   \
+                    __vsym_##name##_name,                           \
+                    type,                                           \
+                    (void*)&name                                    \
                 };
 
         #else
-            #define FINSH_FUNCTION_EXPORT_CMD(name, cmd, desc)      \
-                const char __fsym_##cmd##_name[] = #cmd;            \
-                const struct finsh_syscall __fsym_##cmd SECTION("FSymTab")= \
-                {                           \
-                    __fsym_##cmd##_name,    \
-                    (syscall_func)&name     \
+            #define FINSH_FUNCTION_EXPORT_CMD(name, cmd, desc)                      \
+                const char __fsym_##cmd##_name[] = #cmd;                            \
+                RT_USED const struct finsh_syscall __fsym_##cmd SECTION("FSymTab")= \
+                {                                                                   \
+                    __fsym_##cmd##_name,                                            \
+                    (syscall_func)&name                                             \
                 };
 
-            #define FINSH_VAR_EXPORT(name, type, desc)              \
-                const char __vsym_##name##_name[] = #name;          \
-                const struct finsh_sysvar __vsym_##name SECTION("VSymTab")= \
-                {                           \
-                    __vsym_##name##_name,   \
-                    type,                   \
-                    (void*)&name            \
+            #define FINSH_VAR_EXPORT(name, type, desc)                              \
+                const char __vsym_##name##_name[] = #name;                          \
+                RT_USED const struct finsh_sysvar __vsym_##name SECTION("VSymTab")= \
+                {                                                                   \
+                    __vsym_##name##_name,                                           \
+                    type,                                                           \
+                    (void*)&name                                                    \
                 };
 
         #endif
diff --git a/include/rtdef.h b/include/rtdef.h
index d18ced3a6f597c29a49395e8339ae2d18936cd61..c37f90be2d84145f85ec07697613b7c9ec406c09 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -189,13 +189,13 @@ typedef int (*init_fn_t)(void);
             const char* fn_name;
             const init_fn_t fn;
         };
-        #define INIT_EXPORT(fn, level)          \
-            const char __rti_##fn##_name[] = #fn; \
-            const struct rt_init_desc __rt_init_desc_##fn SECTION(".rti_fn."level) = \
+        #define INIT_EXPORT(fn, level)                                                       \
+            const char __rti_##fn##_name[] = #fn;                                            \
+            RT_USED const struct rt_init_desc __rt_init_desc_##fn SECTION(".rti_fn."level) = \
             { __rti_##fn##_name, fn};
     #else
-        #define INIT_EXPORT(fn, level)  \
-            const init_fn_t __rt_init_##fn SECTION(".rti_fn."level) = fn
+        #define INIT_EXPORT(fn, level)                                                       \
+            RT_USED const init_fn_t __rt_init_##fn SECTION(".rti_fn."level) = fn
     #endif
 #endif
 #else