?RCS: $Id: d_select.U 167 2013-05-08 17:58:00Z rmanfredi $
?RCS:
?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic License,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic License; a copy of which may be found at the root
?RCS: of the source tree for dist 4.0.
?RCS:
?RCS: $Log: d_select.U,v $
?RCS: Revision 3.0  1993/08/18  12:07:02  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:d_select: Trylink cat i_unistd i_systypes i_sysselct i_winsock2
?MAKE:	-pick add $@ %<
?S:d_select:
?S:	This variable conditionally defines HAS_SELECT if select() is
?S:	available to select active file descriptors. A <sys/time.h>
?S:	inclusion may be necessary for the timeout field.
?S:.
?C:HAS_SELECT:
?C:	This symbol, if defined, indicates that the select routine is
?C:	available to select active file descriptors. If the timeout field
?C:	is used, <sys/time.h> may need to be included.
?C:.
?H:#$d_select HAS_SELECT	/**/
?H:.
?LINT:set d_select
: see if select exists
$cat >try.c <<EOC
#$i_unistd I_UNISTD
#$i_systypes I_SYS_TYPES
#$i_sysselct I_SYS_SELECT
#$i_winsock2 I_WINSOCK2
?X: This is still required on some systems
#ifdef I_SYS_TYPES
#include <sys/types.h>
#endif
#ifdef I_UNISTD
#include <unistd.h>
#endif
#ifdef I_SYS_SELECT
#include <sys/select.h>
#endif
#ifdef I_WINSOCK2
#include <Winsock2.h>
#endif
int main(void)
{
	static int ret, n;
	static fd_set r, w, x;
	static struct timeval timeout;
	ret |= select(n, &r, &w, &x, &timeout);
	return ret ? 0 : 1;
}
EOC
cyn=select
set d_select '-lWs2_32'
eval $trylink