diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
index 2fc88da71b..c312f50df5 100644
--- a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
+++ b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
@@ -63,12 +63,9 @@ typedef uintptr_t mem_ptr_t;
             in arch.h has been assigned to another error code. */
 #endif
 
-#if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
+/* LWIP_TIMEVAL_PRIVATE: provided by <sys/time.h> */
 #include <sys/time.h>
 #define LWIP_TIMEVAL_PRIVATE       0
-#else
-#define LWIP_TIMEVAL_PRIVATE       1
-#endif
 
 #if defined(__CC_ARM)   /* ARMCC compiler */
 #define PACK_STRUCT_FIELD(x) x
diff --git a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
index 09c436c53d..4829f5b2e5 100644
--- a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
@@ -54,12 +54,9 @@
             in arch.h has been assigned to another error code. */
 #endif
 
-#if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
+/* LWIP_TIMEVAL_PRIVATE: provided by <sys/time.h> */
 #include <sys/time.h>
 #define LWIP_TIMEVAL_PRIVATE       0
-#else
-#define LWIP_TIMEVAL_PRIVATE       1
-#endif
 
 #if defined(__CC_ARM)   /* ARMCC compiler */
 #define PACK_STRUCT_FIELD(x) x
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
index b7ef3e370a..8e98013412 100644
--- a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
@@ -54,12 +54,9 @@
             in arch.h has been assigned to another error code. */
 #endif
 
-#if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
+/* LWIP_TIMEVAL_PRIVATE: provided by <sys/time.h> */
 #include <sys/time.h>
 #define LWIP_TIMEVAL_PRIVATE       0
-#else
-#define LWIP_TIMEVAL_PRIVATE       1
-#endif
 
 #if defined(__CC_ARM)   /* ARMCC compiler */
 #define PACK_STRUCT_FIELD(x) x