From beea6b0260e8d0b4689d16dc7dc80f07fd854768 Mon Sep 17 00:00:00 2001
From: Sam Roberts <vieuxtech@gmail.com>
Date: Mon, 18 Mar 2013 10:33:07 -0700
Subject: Check for socklen_t (suggested by g.esp and Stefanos Harhalakis)

---
 libnet/configure.ac     | 13 +++++++++++++
 libnet/src/libnet_raw.c |  6 +++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/libnet/configure.ac b/libnet/configure.ac
index 2688469..9108740 100644
--- a/libnet/configure.ac
+++ b/libnet/configure.ac
@@ -30,6 +30,19 @@ AC_TYPE_UINT16_T
 AC_TYPE_UINT32_T
 AC_TYPE_UINT64_T
 
+AC_MSG_CHECKING(for socklen_t)
+AC_TRY_COMPILE([
+        #include <sys/types.h>
+        #include <sys/socket.h>
+        ],
+        [ socklen_t x; ],
+        have_socklen_t=yes,
+        have_socklen_t=no)
+if test "x$have_socklen_t" = "xyes"; then
+        AC_DEFINE(HAVE_SOCKLEN_T, 1, [define if socklen_t is defined])
+fi
+AC_MSG_RESULT($have_socklen_t)
+
 dnl
 dnl And some custom things
 dnl
diff --git a/libnet/src/libnet_raw.c b/libnet/src/libnet_raw.c
index c8cfe16..98917f7 100644
--- a/libnet/src/libnet_raw.c
+++ b/libnet/src/libnet_raw.c
@@ -32,6 +32,10 @@
 
 #include "common.h"
 
+#ifndef HAVE_SOCKLEN_T
+typedef int socklen_t
+#endif
+
 /* TODO this doesn't make any sense, the code in the #else branch is littered
    with conditionals on __WIN32__ that are never reachable, what happened?
    */
@@ -63,7 +67,7 @@ libnet_close_raw6(libnet_t *l)
 int
 libnet_open_raw4(libnet_t *l)
 {
-    int len; /* now supposed to be socklen_t, but maybe old systems used int? */
+    socklen_t len;
 
 #if !(__WIN32__)
      int n = 1;
-- 
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