From f2c8de6b1b25d6a8d678bfa364501634d0b81590 Mon Sep 17 00:00:00 2001
From: jofrev <jonathan@vahlsing.de>
Date: Thu, 8 Dec 2022 22:29:01 +0000
Subject: [PATCH] Set errno in adjtime if newlib time funcs are not implemented

Other time functions (e.g. settimeofday) set errno to ENOSYS if
IMPL_NEWLIB_TIME_FUNCS is not set.
adjtime should probably do the same.
---
 components/newlib/time.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/newlib/time.c b/components/newlib/time.c
index 73fc04e5cc..638beb19a4 100644
--- a/components/newlib/time.c
+++ b/components/newlib/time.c
@@ -139,6 +139,7 @@ int adjtime(const struct timeval *delta, struct timeval *outdelta)
     }
     return 0;
 #else
+    errno = ENOSYS;
     return -1;
 #endif
 }