1 files changed, 25 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index d29091e9e..a99860334 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.70 2002/06/25 00:24:48 djm Exp $
+# $Id: configure.ac,v 1.71 2002/06/25 03:22:04 mouring Exp $
 
 AC_INIT
 AC_CONFIG_SRCDIR([ssh.c])
@@ -574,6 +574,30 @@ AC_CHECK_FUNCS(arc4random b64_ntop bcopy bindresvport_sa \
         socketpair strerror strlcat strlcpy strmode strsep sysconf tcgetpgrp \
         truncate utimes vhangup vsnprintf waitpid __b64_ntop _getpty)
 
+if test $ac_cv_func_mmap = yes ; then
+AC_MSG_CHECKING([for mmap anon shared])
+AC_TRY_RUN(
+        [
+#include <stdio.h>
+#include <sys/mman.h>
+#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
+#define MAP_ANON MAP_ANONYMOUS
+#endif
+main() { char *p;
+p = (char *) mmap(NULL, 10, PROT_WRITE|PROT_READ, MAP_ANON|MAP_SHARED, -1, 0);
+if (p == (char *)-1)
+        exit(1);
+exit(0);
+}
+        ],
+        [
+                AC_MSG_RESULT(yes)
+                AC_DEFINE(HAVE_MMAP_ANON_SHARED)
+        ],
+        [ AC_MSG_RESULT(no) ] 
+)
+fi
+
 dnl IRIX and Solaris 2.5.1 have dirname() in libgen
 AC_CHECK_FUNCS(dirname, [AC_CHECK_HEADERS(libgen.h)] ,[
         AC_CHECK_LIB(gen, dirname,[