From 2a3cca7c5671483081779054d8a90a94a6d019d7 Mon Sep 17 00:00:00 2001
From: Glenn Strauss <gstrauss@gluelogic.com>
Date: Sun, 10 Oct 2021 14:09:12 -0400
Subject: [PATCH] [core] earlier macOS need define for errno_t (fixes #3107)

Earlier macOS need _DARWIN_C_SOURCE defined for errno_t from sys/types.h

Alternatively, define __STDC_WANT_LIB_EXT1__ >= 1 before include errno.h

x-ref:
  "error: unknown type name 'errno_t' (macOS 10.13.6)"
  https://redmine.lighttpd.net/issues/3107
---
 src/ck.h    | 5 +++++
 src/first.h | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/src/ck.h b/src/ck.h
index c8ab4b4e..4389d746 100644
--- a/src/ck.h
+++ b/src/ck.h
@@ -12,6 +12,11 @@
 #ifndef __STDC_WANT_LIB_EXT1__ /*(enable C11 Annex K ext1 *_s functions)*/
 #define __STDC_WANT_LIB_EXT1__ 1
 #endif
+#if defined(__APPLE__) && defined(__MACH__)
+#ifndef _DARWIN_C_SOURCE
+#define _DARWIN_C_SOURCE
+#endif
+#endif
 #include "first.h"
 #ifdef __FreeBSD__
 #ifndef _RSIZE_T_DEFINED /* expecting __EXT1_VISIBLE 1 and _RSIZE_T_DEFINED */
diff --git a/src/first.h b/src/first.h
index 9f8380f4..defd1989 100644
--- a/src/first.h
+++ b/src/first.h
@@ -13,6 +13,12 @@
 #define _DEFAULT_SOURCE
 #endif
 
+#if defined(__APPLE__) && defined(__MACH__)
+#ifndef _DARWIN_C_SOURCE
+#define _DARWIN_C_SOURCE
+#endif
+#endif
+
 #ifndef __STDC_WANT_LIB_EXT1__
 #define __STDC_WANT_LIB_EXT1__ 1
 #endif