https://github.com/scheme/scsh/pull/50.patch

From edced224436fa70cd7d885fe65996b9c3cfd33d7 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Mon, 28 Apr 2025 22:40:31 +0100
Subject: [PATCH] c/syscalls.c: add missing `<time.h>` icnlude

Without the change the build fails for me as:

    c/syscalls.c: In function 'sleep_until':
    c/syscalls.c:711:18: error: implicit declaration of function 'time' [-Wimplicit-function-declaration]
      711 |     time_t now = time(0);
          |                  ^~~~
    c/syscalls.c:41:1: note: 'time' is defined in header '<time.h>'; this is probably fixable by adding '#include <time.h>'
       40 | #include "syscalls.h"
      +++ |+#include <time.h>
       41 |
---
 c/syscalls.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/c/syscalls.c b/c/syscalls.c
index fe11e81..2be25a8 100644
--- a/c/syscalls.c
+++ b/c/syscalls.c
@@ -5,6 +5,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h> /* for time() */
 #include <sys/signal.h>
 #include <signal.h>
 #include <sys/types.h>