Bruno Haible wrote:
The function is not present on any other system, I checked.
It was introduced in OpenBSD 5.6 and was added to FreeBSD in 11.1.
Hmm, the NetBSD man page says it's available in NetBSD 8 in the _OPENBSD_SOURCE
namespace, which is news to me. This means the extensions module needs to define
yet another symbol (and the proposed module should depend on the extensions
module). I installed the attached to do the extensions-module part of this.
From 36ddcbbea36a2a110dd05ffc3611ab020905e94e Mon Sep 17 00:00:00 2001
From: Paul Eggert <[email protected]>
Date: Tue, 8 Aug 2017 11:07:06 -0700
Subject: [PATCH] extensions: add _OPENBSD_SOURCE
* m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Define _OPENBSD_SOURCE.
---
ChangeLog | 5 +++++
m4/extensions.m4 | 7 ++++++-
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index bd7eb1f..6c418df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-08-08 Paul Eggert <[email protected]>
+
+ extensions: add _OPENBSD_SOURCE
+ * m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Define _OPENBSD_SOURCE.
+
2017-08-06 Reuben Thomas <[email protected]>
Bruno Haible <[email protected]>
diff --git a/m4/extensions.m4 b/m4/extensions.m4
index c60f537..0c16bb8 100644
--- a/m4/extensions.m4
+++ b/m4/extensions.m4
@@ -1,4 +1,4 @@
-# serial 15 -*- Autoconf -*-
+# serial 16 -*- Autoconf -*-
# Enable extensions on systems that normally disable them.
# Copyright (C) 2003, 2006-2017 Free Software Foundation, Inc.
@@ -68,6 +68,10 @@ dnl configure.ac when using autoheader 2.62.
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
+/* Enable OpenBSD extensions on NetBSD. */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
@@ -128,6 +132,7 @@ dnl configure.ac when using autoheader 2.62.
AC_DEFINE([_ALL_SOURCE])
AC_DEFINE([_DARWIN_C_SOURCE])
AC_DEFINE([_GNU_SOURCE])
+ AC_DEFINE([_OPENBSD_SOURCE])
AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__])
AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__])
--
2.7.4
