path: root/mcon/U/d_dirfd.U
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+?RCS: Copyright (c) 2015 Raphael Manfredi
+?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.
+?MAKE:d_dirfd: Trylink cat i_dirent
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines HAS_DIRFD when dirfd() is
+?S: available to get the underlying file descriptor from opendir().
+?C: This symbol, if defined, indicates that the dirfd() routine is
+?C: available to get the underlying file descriptor from a DIR *
+?C: opened by opendir().
+?H:#$d_dirfd HAS_DIRFD /**/
+?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>
+int main(void)
+ static DIR *dir;
+ static int ret;
+ ret = dirfd(dir);
+ return ret ? 0 : 1;
+set d_dirfd
+eval $trylink