2 dnl Copyright (C) 2011-2013 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_DUP],
9 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10 AC_REQUIRE([gl_MSVC_INVAL])
11 if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
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], [
18 if test $HAVE_FCHDIR = 0; then
24 # Prerequisites of lib/dup.c.
25 AC_DEFUN([gl_PREREQ_DUP], [:])