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+?RCS: $Id: d_madvise.U 167 2013-05-08 17:58:00Z rmanfredi $
+?RCS: Copyright (c) 2006, Christian Biere
+?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_madvise: Trylink cat i_sysmman
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines the HAS_MADVISE symbol, which
+?S: indicates to the C program that the madvise() routine is available.
+?C: This symbol, if defined, indicates that the madvise routine is
+?C: available.
+?H:#$d_madvise HAS_MADVISE /**/
+?LINT:set d_madvise
+: see if madvise exists
+$cat >try.c <<EOC
+#include <sys/types.h>
+#$i_sysmman I_SYS_MMAN
+#ifdef I_SYS_MMAN
+#include <sys/mman.h>
+int main(void)
+ static int ret;
+ static void *p;
+ size_t len = 1024;
+ ret |= madvise(p, len, 1);
+ return ret ? 0 : 1;
+set d_madvise
+eval $trylink