?RCS:
?RCS: Copyright (c) 2015 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:
?MAKE:d_fchdir: Trylink cat i_unistd
?MAKE:	-pick add $@ %<
?S:d_fchdir:
?S:	This variable conditionally defines HAS_FCHDIR if fchdir() is
?S:	available to change the directory to that of an opened directory.
?S:.
?C:HAS_FCHDIR:
?C:	This symbol, if defined, indicates that the fchdir routine is
?C:	available to change the working directory to that of the opened
?C:	directory whose file descriptor is given.
?C:.
?H:#$d_fchdir HAS_FCHDIR	/**/
?H:.
?LINT:set d_fchdir
: see if fchdir exists
$cat >try.c <<EOC
#$i_unistd I_UNISTD
#ifdef I_UNISTD
#include <unistd.h>
#endif
int main(void)
{
	static int fd, ret;
	ret |= fchdir(fd);
	return ret ? 0 : 1;
}
EOC
cyn=fchdir
set d_fchdir
eval $trylink