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# dup.m4 serial 3
dnl Copyright (C) 2011-2015 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_FUNC_DUP],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([gl_MSVC_INVAL])
if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
REPLACE_DUP=1
fi
dnl Replace dup() for supporting the gnulib-defined fchdir() function,
dnl to keep fchdir's bookkeeping up-to-date.
m4_ifdef([gl_FUNC_FCHDIR], [
gl_TEST_FCHDIR
if test $HAVE_FCHDIR = 0; then
REPLACE_DUP=1
fi
])
])
# Prerequisites of lib/dup.c.
AC_DEFUN([gl_PREREQ_DUP], [:])
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