?RCS: $Id$
?RCS:
?RCS: Copyright (c) 2006, Christian Biere
?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:
?MAKE:d_closefrom: Trylink cat i_unistd
?MAKE:	-pick add $@ %<
?S:d_closefrom:
?S:	This variable conditionally defines the HAS_CLOSEFROM symbol, which
?S:	indicates to the C program that closefrom() support is available.
?S:.
?C:HAS_CLOSEFROM:
?C:	This symbol is defined when closefrom() can be used.
?C:.
?H:#$d_closefrom HAS_CLOSEFROM
?H:.
?LINT: set d_closefrom
: can we use closefrom?
$cat >try.c <<EOC
#include <sys/types.h>
#include <stdlib.h>
#$i_unistd I_UNISTD
#ifdef I_UNISTD
#include <unistd.h>
#endif
int main(void)
{
  static const int fd = 1;
  /*
   * On Solaris it returns nothing
   * On NetBSD it's equivalent to fcntl(fd, F_CLOSEM)
   */
  closefrom(fd);	
  return 0;
}
EOC
cyn=closefrom
set d_closefrom
eval $trylink