?RCS: $Id$
?RCS:
?RCS: Copyright (c) 2001, Jarkko Hietaniemi
?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 3.0.
?RCS:
?RCS:
?MAKE:d_dirfd: Compile cat rm Setvar i_dirent i_sysdir i_sysndir i_systypes i_stdlib
?MAKE:	-pick add $@ %<
?S:d_dirfd:
?S:	This variable conditionally defines the HAS_DIRFD constant,
?S:	which indicates to the C program that dirfd() is available
?S:	to return the file descriptor of a directory stream.
?S:.
?C:HAS_DIRFD:
?C:	This manifest constant lets the C program know that dirfd
?C:	is available.
?C:.
?H:#$d_dirfd HAS_DIRFD		/**/
?H:.
?LINT:set d_dirfd
?X: Can't use Inlibc because dirfd() might be a macro.
: Look for dirfd
echo " "
$cat >dirfd.c <<EOM
#include <stdio.h>
#$i_stdlib I_STDLIB
#ifdef I_STDLIB
#include <stdlib.h>
#endif
#$i_dirent I_DIRENT		/**/
#$i_sysdir I_SYS_DIR		/**/
#$i_sysndir I_SYS_NDIR		/**/
#$i_systypes I_SYS_TYPES	/**/
#if defined(I_SYS_TYPES)
#include <sys/types.h>
#endif
#if defined(I_DIRENT)
#include <dirent.h>
#else
#ifdef I_SYS_NDIR
#include <sys/ndir.h>
#else
#ifdef I_SYS_DIR
#ifdef hp9000s500
#include <ndir.h>	/* may be wrong in the future */
#else
#include <sys/dir.h>
#endif
#endif
#endif
#endif
int main() {
	DIR *dirp = opendir(".");
	if (dirfd(dirp) >= 0)
		exit(0);
	else
		exit(1);
}
EOM
val=$undef
set dirfd
if eval $compile; then
	val="$define"
fi
case "$val" in
$define)	echo "dirfd() found." >&4	;;
*)		echo "dirfd() NOT found." >&4	;;
esac
set d_dirfd
eval $setvar
$rm -f dirfd*