From 266c4d52e17ca87dee6351b9668fc76cd4fa949d Mon Sep 17 00:00:00 2001
From: Brian Candler <b.candler@pobox.com>
Date: Thu, 14 Dec 2017 20:40:22 +0000
Subject: [PATCH] Add #include <unistd.h> to provide prototype for getopt()

Signed-off-by: Brian Candler <b.candler@pobox.com>
---
 examples/auth/crackcheck/crackcheck.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/auth/crackcheck/crackcheck.c b/examples/auth/crackcheck/crackcheck.c
index 0c997bb00b6..c3037756f42 100644
--- a/examples/auth/crackcheck/crackcheck.c
+++ b/examples/auth/crackcheck/crackcheck.c
@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <crack.h>
+#include <unistd.h>
 
 void usage(char *command) {
 	char *c, *comm;