-#serial 3
+#serial 4
dnl Copyright (C) 2002, 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_DEFUN([gl_FUNC_DUP2],
[
AC_REPLACE_FUNCS(dup2)
- if test $ac_cv_func_dup2 = no; then
- gl_PREREQ_DUP2
- fi
-])
-
-# Prerequisites of lib/dup2.c.
-AC_DEFUN([gl_PREREQ_DUP2], [
- AC_CHECK_HEADERS_ONCE(unistd.h)
])