diff --git a/cmake/define.inc b/cmake/define.inc
index 4115dd0c4143535130b1bf8a132ee400d828d87d..52b0ead1a5309047e4649c3cf1e56881ef061196 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -138,7 +138,7 @@ IF (TD_DARWIN_64)
   ADD_DEFINITIONS(-D_REENTRANT -D__USE_POSIX -D_LIBC_REENTRANT)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "darwin64 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -Wno-missing-braces -fPIC -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-Wall -Werror -Wno-missing-braces -fPIC -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
   SET(DEBUG_FLAGS "-O0 -g3 -DDEBUG")
   SET(RELEASE_FLAGS "-Og")
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)
diff --git a/src/os/inc/osSemphone.h b/src/os/inc/osSemphone.h
index 2e2d432607bdc96de63edf5993345f9780452c1f..fe59095205010bef553413809706c62cd772a7e3 100644
--- a/src/os/inc/osSemphone.h
+++ b/src/os/inc/osSemphone.h
@@ -29,7 +29,7 @@ extern "C" {
 #else
   #define tsem_t sem_t
   #define tsem_init sem_init
-  int32_t tsem_wait(tsem_t* sem);
+  int tsem_wait(tsem_t* sem);
   #define tsem_post sem_post
   #define tsem_destroy sem_destroy
 #endif
diff --git a/src/os/src/darwin/dwEok.c b/src/os/src/darwin/dwEok.c
index c8e270214f0e876bc919ecee2951dc156ed8a4c4..22d92607635ab81793dd7c7d7e2303a8a9d76477 100644
--- a/src/os/src/darwin/dwEok.c
+++ b/src/os/src/darwin/dwEok.c
@@ -18,9 +18,9 @@
 // https://stackoverflow.com/questions/4393197/erlangs-let-it-crash-philosophy-applicable-elsewhere
 // experimentally, we follow log-and-crash here
 
-#include "osEok.h"
-
+#define _DEFAULT_SOURCE
 #include "os.h"
+#include "osEok.h"
 
 #include <sys/event.h>
 
diff --git a/src/os/src/darwin/dwSemphone.c b/src/os/src/darwin/dwSemphone.c
index 317611fa30c91348bcec3903e1b7e6f8928b0d15..898410647ad6e23428656f6f820504126268af07 100644
--- a/src/os/src/darwin/dwSemphone.c
+++ b/src/os/src/darwin/dwSemphone.c
@@ -20,8 +20,6 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include <stdint.h>
-
 #include <libproc.h>
 
 // #define SEM_USE_PTHREAD
@@ -38,7 +36,7 @@
 static pthread_t                 sem_thread;
 static pthread_once_t            sem_once;
 static task_t                    sem_port;
-static volatile int32_t          sem_inited = 0;
+static volatile int              sem_inited = 0;
 static semaphore_t               sem_exit;
 
 static void* sem_thread_routine(void *arg) {
@@ -56,7 +54,7 @@ static void* sem_thread_routine(void *arg) {
 }
 
 static void once_init(void) {
-  int32_t r = 0;
+  int r = 0;
   r = pthread_create(&sem_thread, NULL, sem_thread_routine, NULL);
   if (r) {
     fprintf(stderr, "==%s[%d]%s()==failed to create thread\n", basename(__FILE__), __LINE__, __func__);
@@ -82,10 +80,10 @@ struct tsem_s {
   dispatch_semaphore_t         sem;
 #endif // SEM_USE_PTHREAD
 
-  volatile unsigned int32_t        valid:1;
+  volatile unsigned int        valid:1;
 };
 
-int32_t tsem_init(tsem_t *sem, int32_t pshared, unsigned int32_t value) {
+int tsem_init(tsem_t *sem, int pshared, unsigned int value) {
   // fprintf(stderr, "==%s[%d]%s():[%p]==creating\n", basename(__FILE__), __LINE__, __func__, sem);
   if (*sem) {
     fprintf(stderr, "==%s[%d]%s():[%p]==already initialized\n", basename(__FILE__), __LINE__, __func__, sem);
@@ -98,7 +96,7 @@ int32_t tsem_init(tsem_t *sem, int32_t pshared, unsigned int32_t value) {
   }
 
 #ifdef SEM_USE_PTHREAD
-  int32_t r = pthread_mutex_init(&p->lock, NULL);
+  int r = pthread_mutex_init(&p->lock, NULL);
   do {
     if (r) break;
     r = pthread_cond_init(&p->cond, NULL);
@@ -125,7 +123,7 @@ int32_t tsem_init(tsem_t *sem, int32_t pshared, unsigned int32_t value) {
     p->sem = sem_open(name, O_CREAT|O_EXCL, pshared, value);
     p->id  = id;
     if (p->sem!=SEM_FAILED) break;
-    int32_t e = errno;
+    int e = errno;
     if (e==EEXIST) continue;
     if (e==EINTR) continue;
     fprintf(stderr, "==%s[%d]%s():[%p]==not created[%d]%s\n", basename(__FILE__), __LINE__, __func__, sem, e, strerror(e));
@@ -159,7 +157,7 @@ int32_t tsem_init(tsem_t *sem, int32_t pshared, unsigned int32_t value) {
   return 0;
 }
 
-int32_t tsem_wait(tsem_t *sem) {
+int tsem_wait(tsem_t *sem) {
   if (!*sem) {
     fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
     abort();
@@ -195,7 +193,7 @@ int32_t tsem_wait(tsem_t *sem) {
 #endif // SEM_USE_PTHREAD
 }
 
-int32_t tsem_post(tsem_t *sem) {
+int tsem_post(tsem_t *sem) {
   if (!*sem) {
     fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
     abort();
@@ -231,7 +229,7 @@ int32_t tsem_post(tsem_t *sem) {
 #endif // SEM_USE_PTHREAD
 }
 
-int32_t tsem_destroy(tsem_t *sem) {
+int tsem_destroy(tsem_t *sem) {
   // fprintf(stderr, "==%s[%d]%s():[%p]==destroying\n", basename(__FILE__), __LINE__, __func__, sem);
   if (!*sem) {
     // fprintf(stderr, "==%s[%d]%s():[%p]==not initialized\n", basename(__FILE__), __LINE__, __func__, sem);
@@ -265,9 +263,9 @@ int32_t tsem_destroy(tsem_t *sem) {
 #elif defined(SEM_USE_POSIX)
   char name[NAME_MAX-4];
   snprintf(name, sizeof(name), "/t%ld", p->id);
-  int32_t r = sem_unlink(name);
+  int r = sem_unlink(name);
   if (r) {
-    int32_t e = errno;
+    int e = errno;
     fprintf(stderr, "==%s[%d]%s():[%p]==unlink failed[%d]%s\n", basename(__FILE__), __LINE__, __func__, sem, e, strerror(e));
     abort();
   }
@@ -285,7 +283,7 @@ int32_t tsem_destroy(tsem_t *sem) {
 
 bool taosCheckPthreadValid(pthread_t thread) {
   uint64_t id = 0;
-  int32_t r = pthread_threadid_np(thread, &id);
+  int r = pthread_threadid_np(thread, &id);
   return r ? false : true;
 }
 
diff --git a/src/os/src/darwin/dwSysInfo.c b/src/os/src/darwin/dwSysInfo.c
index 6e70043779d01be361f66a67b16608b56a9285ed..b3c9bd528e9459a8d5798a2ff6ca4a1664503a90 100644
--- a/src/os/src/darwin/dwSysInfo.c
+++ b/src/os/src/darwin/dwSysInfo.c
@@ -22,7 +22,6 @@
 #include <errno.h>
 #include <libproc.h>
 
-
 static void taosGetSystemTimezone() {
   SGlobalCfg *cfg_timezone = taosGetConfigOption("timezone");
   if (cfg_timezone == NULL) return;
diff --git a/src/os/src/detail/osTimer.c b/src/os/src/detail/osTimer.c
index 6ce1b73703abc74ad8f3563ff70db2b09585870a..b054f08c7842ed405f818b26be6040c543fa7644 100644
--- a/src/os/src/detail/osTimer.c
+++ b/src/os/src/detail/osTimer.c
@@ -18,7 +18,7 @@
 #include "ttimer.h"
 #include "tulog.h"
 
-#if !(defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32))
+#if !(defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32) || defined(_TD_DARWIN_64))
 
 static void taosDeleteTimer(void *tharg) {
   timer_t *pTimer = tharg;