?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_dirfd: Trylink cat i_dirent
?MAKE:	-pick add $@ %<
?S:d_dirfd:
?S:	This variable conditionally defines HAS_DIRFD when dirfd() is
?S:	available to get the underlying file descriptor from opendir().
?S:.
?C:HAS_DIRFD:
?C:	This symbol, if defined, indicates that the dirfd() routine is
?C:	available to get the underlying file descriptor from a DIR *
?C:	opened by opendir().
?C:.
?H:#$d_dirfd HAS_DIRFD		/**/
?H:.
?LINT:set d_dirfd
: see if dirfd exists
$cat >try.c <<EOC
#include <sys/types.h>
#$i_dirent I_DIRENT
#ifdef I_DIRENT
#include <dirent.h>
#endif
int main(void)
{
	static DIR *dir;
	static int ret;
	ret = dirfd(dir);
	return ret ? 0 : 1;
}
EOC
cyn=dirfd
set d_dirfd
eval $trylink