-# pipe.m4 serial 2
-dnl Copyright (C) 2004, 2008 Free Software Foundation, Inc.
+# pipe.m4 serial 4
+dnl Copyright (C) 2004, 2008, 2009, 2010 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_PIPE],
[
- dnl Prerequisites of lib/pipe.h.
- AC_CHECK_HEADERS_ONCE(unistd.h)
dnl Prerequisites of lib/pipe.c.
AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([AC_TYPE_MODE_T])
- AC_REQUIRE([AC_FUNC_FORK])
- AC_CHECK_FUNC([posix_spawn],
- [gl_POSIX_SPAWN_WORKS
- case "$gl_cv_func_posix_spawn_works" in
- *yes)
- AC_DEFINE([HAVE_POSIX_SPAWN], 1,
- [Define if you have the posix_spawn() function and it works.])
- ;;
- esac
- ])
])