From a924da830e0105c981bef650cb1391e9580e819d Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 17 Jul 2022 02:58:43 -0400
Subject: [PATCH] =?UTF-8?q?[libc]=20=E4=BF=AE=E5=A4=8Ddifftime=E5=87=BD?=
 =?UTF-8?q?=E6=95=B0=E5=9C=A8IAR=E4=B8=8B=E7=9A=84=E7=BC=96=E8=AF=91?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF?=
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---
 components/libc/compilers/common/ctime.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/libc/compilers/common/ctime.c b/components/libc/compilers/common/ctime.c
index 6cef1e222d..34d646ff9d 100644
--- a/components/libc/compilers/common/ctime.c
+++ b/components/libc/compilers/common/ctime.c
@@ -324,10 +324,12 @@ char* ctime(const time_t *tim_p)
 }
 RTM_EXPORT(ctime);
 
+#ifndef __ICCARM__
 double difftime(time_t time1, time_t time2)
 {
     return (double)(time1 - time2);
 }
+#endif /* __ICCARM__ */
 RTM_EXPORT(difftime);
 
 RTM_EXPORT(strftime); /* inherent in the toolchain */