From 4ea016761ad4502819b2271d54b52ec98c7325af Mon Sep 17 00:00:00 2001
From: Marius Vollmer <mvo@zagadka.de>
Date: Mon, 6 May 2002 19:11:00 +0000
Subject: [PATCH] Include <sys/types.h> before <netinet/in.h> when checking vor
 IPv6. This is for NetBSD 1.5.  Thanks to Greg Troxel!

---
 configure.in | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/configure.in b/configure.in
index 09033fc7a..5913e3c53 100644
--- a/configure.in
+++ b/configure.in
@@ -349,7 +349,11 @@ fi
 
 AC_MSG_CHECKING(for working IPv6 support)
 AC_CACHE_VAL(guile_cv_have_ipv6,
-[AC_TRY_COMPILE([#include <netinet/in.h>
+[AC_TRY_COMPILE([
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#include <netinet/in.h>
 #include <sys/socket.h>],
 [struct sockaddr_in6 a;  a.sin6_family = AF_INET6;],
 guile_cv_have_ipv6=yes, guile_cv_have_ipv6=no)])
@@ -361,7 +365,11 @@ fi
 # included in rfc2553 but not in older implementations, e.g., glibc 2.1.3.
 AC_MSG_CHECKING(whether sockaddr_in6 has sin6_scope_id)
 AC_CACHE_VAL(guile_cv_have_sin6_scope_id,
-[AC_TRY_COMPILE([#include <netinet/in.h>],
+[AC_TRY_COMPILE([
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#include <netinet/in.h>],
 [struct sockaddr_in6 sok;  sok.sin6_scope_id = 0;],
 guile_cv_have_sin6_scope_id=yes, guile_cv_have_sin6_scope_id=no)])
 AC_MSG_RESULT($guile_cv_have_sin6_scope_id)