Import dist_3.5-236.orig.tar.gz

[dgit import orig dist_3.5-236.orig.tar.gz]

1 files changed, 48 insertions, 0 deletions

diff --git a/mcon/U/d_preadv.U b/mcon/U/d_preadv.U
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+++ b/mcon/U/d_preadv.U
@@ -0,0 +1,48 @@
+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, 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:
+?RCS: $Log: d_preadv.U,v $
+?RCS:
+?MAKE:d_preadv: Trylink cat i_unistd
+?MAKE:	-pick add $@ %<
+?S:d_preadv:
+?S:	This variable conditionally defines the HAS_PREADV symbol, which
+?S:	indicates to the C program that the preadv() routine is available.
+?S:.
+?C:HAS_PREADV :
+?C:	This symbol, if defined, indicates that the preadv routine is
+?C:	available to perform vectored reads on a file descriptor at a
+?C: given offset.
+?C:.
+?H:#$d_preadv HAS_PREADV		/**/
+?H:.
+?LINT:set d_preadv
+: see if preadv exists
+$cat >try.c <<EOC
+#include <sys/types.h>
+#include <sys/uio.h>
+#$i_unistd I_UNISTD
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+int main(void)
+{
+	static ssize_t ret;
+	static int fd, iovcnt;
+	static struct iovec iov;
+	static off_t offset;
+	ret |= preadv(fd, &iov, iovcnt, offset);
+	return ret ? 0 : 1;
+}
+EOC
+cyn=preadv
+set d_preadv
+eval $trylink
+