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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_dirent_d_namlen: Trylink cat i_dirent
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines the HAS_DIRENT_D_NAMLEN symbol,
+?S: which indicates to the C program that struct dirent has an
+?S: integer member d_namlen. Better check for HAS_DIRENT_D_NAMLEN than
+?S: DIRNAMLEN since the latter has a weaker test not involving compilation.
+?C: This symbol, if defined, indicates that struct dirent has an
+?C: integer member d_namlen to hold the actual string length of d_name.
+?H:#$d_dirent_d_namlen HAS_DIRENT_D_NAMLEN /**/
+?LINT:set d_dirent_d_namlen
+: check whether struct dirent has a member d_namlen.
+$cat >try.c <<EOC
+#include <sys/types.h>
+#$i_dirent I_DIRENT
+#ifdef I_DIRENT
+#include <dirent.h>
+int main(void)
+ static struct dirent dir_entry;
+ dir_entry.d_namlen |= 1;
+ return 0;
+cyn="whether struct dirent has a d_namlen member"
+set d_dirent_d_namlen
+eval $trylink