From 189f6f8db256bca8ef63683104247e4b85c81f93 Mon Sep 17 00:00:00 2001
From: Andrey Volk <andywolk@gmail.com>
Date: Fri, 28 May 2021 21:26:56 +0300
Subject: [PATCH] [apr] error: use of undeclared identifier 'NSIG'

---
 libs/apr/include/apr_general.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libs/apr/include/apr_general.h b/libs/apr/include/apr_general.h
index 42eec83ce4..3a956288e3 100644
--- a/libs/apr/include/apr_general.h
+++ b/libs/apr/include/apr_general.h
@@ -29,6 +29,10 @@
 #include "apr_pools.h"
 #include "apr_errno.h"
 
+#if !defined(_ANSI_SOURCE) && defined(_DARWIN_C_SOURCE)
+#define NSIG __DARWIN_NSIG
+#endif
+
 #if APR_HAVE_SIGNAL_H
 #include <signal.h>
 #endif