From a95e8b80db1bb41844978f70cee93691b3c7206f Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sat, 30 Dec 2017 09:44:53 +0000
Subject: [PATCH] net/if.h requires sys/socket.h on OpenBSD

This led to a detection failure of this particular header.
---
 ext/standard/config.m4 | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ext/standard/config.m4 b/ext/standard/config.m4
index a4d6ccf1e6..a74df78a51 100644
--- a/ext/standard/config.m4
+++ b/ext/standard/config.m4
@@ -451,7 +451,14 @@ fi
 dnl
 dnl net_get_interfaces
 dnl
-AC_CHECK_HEADERS([net/if.h netdb.h])
+AC_CHECK_HEADERS([net/if.h],[], [],
+[
+  #ifdef HAVE_SYS_SOCKET_H
+  #include <sys/socket.h>
+  #endif
+  #include <net/if.h>
+])
+AC_CHECK_HEADERS([netdb.h])
 AC_MSG_CHECKING([for usable getifaddrs])
 AC_TRY_LINK([
   #include <sys/types.h>
-- 
2.50.1