From b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 10 Apr 2024 22:25:44 +0200
Subject: Adding upstream version 1.21.4.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 m4/pipe2.m4 | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 m4/pipe2.m4

(limited to 'm4/pipe2.m4')

diff --git a/m4/pipe2.m4 b/m4/pipe2.m4
new file mode 100644
index 0000000..79de69c
--- /dev/null
+++ b/m4/pipe2.m4
@@ -0,0 +1,23 @@
+# pipe2.m4 serial 4
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PIPE2],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  dnl Persuade glibc <unistd.h> to declare pipe2().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  gl_CHECK_FUNCS_ANDROID([pipe2], [[#include <unistd.h>]])
+  if test $ac_cv_func_pipe2 != yes; then
+    HAVE_PIPE2=0
+    case "$gl_cv_onwards_func_pipe2" in
+      future*) REPLACE_PIPE2=1 ;;
+    esac
+  else
+    REPLACE_PIPE2=1
+  fi
+])
-- 
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