diff --git a/.gitignore b/.gitignore
index 558b09f1e48beb5f2bc36fedafcec8d97a664a89..87595dcd32961c7fa0caaa43b0ffd9ed82f92221 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,6 +43,11 @@ ncscope.*
 #ctag files
 tags
 
+#gtag files
+GPATH
+GRTAGS
+GTAGS
+
 .idea
 .vscode
 *.code-workspace
diff --git a/bsp/imx6ul/rtconfig.h b/bsp/imx6ul/rtconfig.h
index e71a36b7c59059f05adfc70218c52eb62916b337..600d5521445079a4b810cde5a69f4b3ba5c92ac2 100644
--- a/bsp/imx6ul/rtconfig.h
+++ b/bsp/imx6ul/rtconfig.h
@@ -9,6 +9,7 @@
 /* RT-Thread Kernel */
 
 #define RT_NAME_MAX 8
+#define RT_CPUS_NR 1
 #define RT_ALIGN_SIZE 8
 #define RT_THREAD_PRIORITY_32
 #define RT_THREAD_PRIORITY_MAX 32
@@ -49,6 +50,7 @@
 #define RT_CONSOLEBUF_SIZE 128
 #define RT_CONSOLE_DEVICE_NAME "uart1"
 #define RT_VER_NUM 0x50002
+#define RT_BACKTRACE_LEVEL_MAX_NR 32
 #define RT_USING_CACHE
 #define RT_USING_HW_ATOMIC
 #define RT_USING_CPU_FFS
diff --git a/components/libc/compilers/common/ctime.c b/components/libc/compilers/common/ctime.c
index 44822ec3799eb80732a8860f1f0218def87dfbd1..ffa4d150a35c4483cf463d7242a58dd1e085a4d9 100644
--- a/components/libc/compilers/common/ctime.c
+++ b/components/libc/compilers/common/ctime.c
@@ -771,7 +771,7 @@ RTM_EXPORT(rt_timespec_to_tick);
 struct timer_obj
 {
     struct rt_ktime_hrtimer hrtimer;
-    void (*sigev_notify_function)(union sigval val);
+    void (*sigev_notify_function_t)(union sigval val);
     union sigval val;
     struct timespec interval;              /* Reload value */
     struct timespec value;                 /* Reload value */
@@ -874,7 +874,7 @@ static void rtthread_timer_wrapper(void *timerobj)
     }
 #ifdef RT_USING_SMART
     /* this field is named as tid in musl */
-    int tid = *(int *)&timer->sigev_notify_function;
+    int tid = *(int *)&timer->sigev_notify_function_t;
     struct lwp_timer_event_param *data = rt_container_of(timer->work, struct lwp_timer_event_param, work);
     data->signo = timer->sigev_signo;
 
@@ -892,9 +892,9 @@ 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_function_t != RT_NULL)
     {
-        (timer->sigev_notify_function)(timer->val);
+        (timer->sigev_notify_function_t)(timer->val);
     }
 #endif /* RT_USING_SMART */
 }
@@ -982,7 +982,7 @@ 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_function_t = evp->sigev_notify_function;
     timer->val = evp->sigev_value;
     timer->interval.tv_sec = 0;
     timer->interval.tv_nsec = 0;