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+/* Create a pipe.
+ Copyright (C) 2009-2020 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Native Windows API. */
+
+/* Get _pipe(). */
+# include <io.h>
+
+/* Get _O_BINARY. */
+# include <fcntl.h>
+
+int
+pipe (int fd[2])
+{
+ /* Mingw changes fd to {-1,-1} on failure, but this violates
+ http://austingroupbugs.net/view.php?id=467 */
+ int tmp[2];
+ int result = _pipe (tmp, 4096, _O_BINARY);
+ if (!result)
+ {
+ fd[0] = tmp[0];
+ fd[1] = tmp[1];
+ }
+ return result;
+}
+
+#else
+
+# error "This platform lacks a pipe function, and Gnulib doesn't provide a replacement. This is a bug in Gnulib."
+
+#endif