1# dup.m4 serial 3
2dnl Copyright (C) 2011-2014 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_DUP],
8[
9  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10  AC_REQUIRE([gl_MSVC_INVAL])
11  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
12    REPLACE_DUP=1
13  fi
14  dnl Replace dup() for supporting the gnulib-defined fchdir() function,
15  dnl to keep fchdir's bookkeeping up-to-date.
16  m4_ifdef([gl_FUNC_FCHDIR], [
17    gl_TEST_FCHDIR
18    if test $HAVE_FCHDIR = 0; then
19      REPLACE_DUP=1
20    fi
21  ])
22])
23
24# Prerequisites of lib/dup.c.
25AC_DEFUN([gl_PREREQ_DUP], [:])
26