?RCS: $Id: d_shmctl.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_shmctl.U,v $
?RCS: Revision 3.0  1993/08/18  12:07:18  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:d_shmctl: Trylink cat
?MAKE:	-pick add $@ %<
?S:d_shmctl:
?S:	This variable conditionally defines the HAS_SHMCTL symbol, which
?S:	indicates to the C program that the shmctl() routine is available.
?S:.
?C:HAS_SHMCTL:
?C:	This symbol, if defined, indicates that the shmctl() routine is
?C:	available to perform shared memory control operations.
?C:.
?H:#$d_shmctl HAS_SHMCTL		/**/
?H:.
?LINT:set d_shmctl
: see if shmctl exists
$cat >try.c <<EOC
#include <sys/shm.h>
int main(void)
{
	static int ret, id;
	static struct shmid_ds *buf;
	ret |= shmctl(id, IPC_STAT, buf);
	ret |= shmctl(id, IPC_SET, buf);
	ret |= shmctl(id, IPC_RMID, buf);
	return ret ? 0 : 1;
}
EOC
cyn=shmctl
set d_shmctl
eval $trylink