From 1bc574eafaa44bbb0f7ca2d6d93df4c4b7edeff7 Mon Sep 17 00:00:00 2001
From: DTB <trinity@trinity.moe>
Date: Mon, 25 Dec 2023 15:57:58 -0700
Subject: [PATCH] npc(1): without <sysexits.h> fall back to ANSI C

---
 src/npc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/npc.c b/src/npc.c
index c927d28..8a07f1e 100644
--- a/src/npc.c
+++ b/src/npc.c
@@ -18,9 +18,13 @@
 
 #include <stdio.h> /* fprintf(3), fputs(3), getc(3), putc(3), stdin, stdout,
                     * EOF */
+#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS */
 #include <unistd.h> /* getopt(3) */
-#if !defined EX_USAGE || !defined EX_OK
-#	include <sysexits.h>
+#if !defined EX_USAGE
+#	define EX_USAGE EXIT_FAILURE
+#endif
+#if !defined EX_OK
+#	define EX_OK EXIT_SUCCESS
 #endif
 
 int main(int argc, char *argv[]){