From 9d71a24ebf57e7157888af1ca587eafe914bf96f Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Wed, 17 Oct 2018 10:09:33 +0200
Subject: [PATCH] arch/async_posix.h: improve portability.

{make|swap|get|set}context are removed in POSIX.1-2008, but glibc
apparently keeps providing it.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7420)
---
 crypto/async/arch/async_posix.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/async/arch/async_posix.h b/crypto/async/arch/async_posix.h
index b07c2cb01b..62449fe60e 100644
--- a/crypto/async/arch/async_posix.h
+++ b/crypto/async/arch/async_posix.h
@@ -17,7 +17,8 @@
 
 # include <unistd.h>
 
-# if _POSIX_VERSION >= 200112L
+# if _POSIX_VERSION >= 200112L \
+     && (_POSIX_VERSION < 200809L || defined(__GLIBC__))
 
 # include <pthread.h>
 
-- 
2.34.1