diff --git a/components/libc/compilers/common/ctime.c b/components/libc/compilers/common/ctime.c
index 7ea5975b41..7c236f3da8 100644
--- a/components/libc/compilers/common/ctime.c
+++ b/components/libc/compilers/common/ctime.c
@@ -801,7 +801,7 @@ RTM_EXPORT(rt_timespec_to_tick);
 struct timer_obj
 {
     struct rt_ktime_hrtimer hrtimer;
-    void (*sigev_notify_function)(union sigval val);
+    void (*sigev_notify_func)(union sigval val);
     union sigval val;
     struct timespec interval;              /* Reload value */
     struct timespec value;                 /* Reload value */
@@ -903,7 +903,7 @@ static void rtthread_timer_wrapper(void *timerobj)
     }
 #ifdef RT_USING_SMART
     /* this field is named as tid in musl */
-    void *ptid = &timer->sigev_notify_function;
+    void *ptid = &timer->sigev_notify_func;
     int tid = *(int *)ptid;
     struct lwp_timer_event_param *data = rt_container_of(timer->work, struct lwp_timer_event_param, work);
     data->signo = timer->sigev_signo;
@@ -922,9 +922,9 @@ static void rtthread_timer_wrapper(void *timerobj)
     if (rt_work_submit(timer->work, 0))
         RT_ASSERT(0);
 #else
-    if(timer->sigev_notify_function != RT_NULL)
+    if(timer->sigev_notify_func != RT_NULL)
     {
-        (timer->sigev_notify_function)(timer->val);
+        (timer->sigev_notify_func)(timer->val);
     }
 #endif /* RT_USING_SMART */
 }
@@ -1012,7 +1012,7 @@ int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
 
     timer->work = work;
 #endif /* RT_USING_SMART */
-    timer->sigev_notify_function = evp->sigev_notify_function;
+    timer->sigev_notify_func = evp->sigev_notify_function;
     timer->val = evp->sigev_value;
     timer->interval.tv_sec = 0;
     timer->interval.tv_nsec = 0;
diff --git a/components/libc/compilers/musl/fcntl.h b/components/libc/compilers/musl/fcntl.h
index 9388f10de1..51387f7beb 100644
--- a/components/libc/compilers/musl/fcntl.h
+++ b/components/libc/compilers/musl/fcntl.h
@@ -22,18 +22,33 @@
 #define O_DSYNC      010000
 #define O_SYNC     04010000
 #define O_RSYNC    04010000
-#define O_DIRECTORY  040000
-#define O_NOFOLLOW  0100000
 #define O_CLOEXEC  02000000
 
 #define O_ASYNC      020000
-#define O_DIRECT    0200000
-#define O_LARGEFILE 0400000
 #define O_NOATIME  01000000
 #define O_PATH    010000000
-#define O_TMPFILE 020040000
 #define O_NDELAY O_NONBLOCK
 
+#ifndef O_LARGEFILE
+#define O_LARGEFILE   0400000
+#endif
+
+#ifndef O_DIRECT
+#define O_DIRECT   0200000
+#endif
+
+#ifndef O_TMPFILE
+#define O_TMPFILE   020040000
+#endif
+
+#ifndef O_NOFOLLOW
+#define O_NOFOLLOW 0100000
+#endif
+
+#ifndef O_DIRECTORY
+#define O_DIRECTORY 040000
+#endif
+
 #ifndef O_BINARY
 #define O_BINARY 00
 #endif
diff --git a/components/lwp/lwp_syscall.h b/components/lwp/lwp_syscall.h
index 1527a764f1..45c95262f1 100644
--- a/components/lwp/lwp_syscall.h
+++ b/components/lwp/lwp_syscall.h
@@ -32,7 +32,6 @@
 extern "C" {
 #endif
 
-typedef long suseconds_t;       /* microseconds (signed) */
 typedef uint32_t id_t;          /* may contain pid, uid or gid */
 
 /*