close.m4
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close.m4
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	# close.m4 serial 8
	dnl Copyright (C) 2008-2012 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_CLOSE],
	[
	AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
	AC_REQUIRE([gl_MSVC_INVAL])
	if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
	REPLACE_CLOSE=1
	fi
	m4_ifdef([gl_PREREQ_SYS_H_WINSOCK2], [
	gl_PREREQ_SYS_H_WINSOCK2
	if test $UNISTD_H_HAVE_WINSOCK2_H = 1; then
	dnl Even if the 'socket' module is not used here, another part of the
	dnl application may use it and pass file descriptors that refer to
	dnl sockets to the close() function. So enable the support for sockets.
	REPLACE_CLOSE=1
	fi
	])
	dnl Replace close() for supporting the gnulib-defined fchdir() function,
	dnl to keep fchdir's bookkeeping up-to-date.
	m4_ifdef([gl_FUNC_FCHDIR], [
	if test $REPLACE_CLOSE = 0; then
	gl_TEST_FCHDIR
	if test $HAVE_FCHDIR = 0; then
	REPLACE_CLOSE=1
	fi
	fi
	])
	])