From de47c2253dfc39f5a2e26b64a47afb538f602a13 Mon Sep 17 00:00:00 2001
From: Ezra Peisach <epeisach@mit.edu>
Date: Fri, 21 Jun 2002 19:21:44 +0000
Subject: [PATCH] 	* fake-addrinfo.h: If IPv6 support is compiled in, but
 the OS does 	not provide in6addr_any in libc, provide a static copy.

	* configure.in: If IPv6 support is compiled in, test for existence
	of in6addr_any in libc.

Irix 6.5.16 declares it, and some libraries appear to depend on it, but
it is not defined in any libraries that I could find.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@14555 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/include/ChangeLog       |  8 ++++++++
 src/include/configure.in    | 27 +++++++++++++++++++++++++++
 src/include/fake-addrinfo.h |  5 +++++
 3 files changed, 40 insertions(+)

diff --git a/src/include/ChangeLog b/src/include/ChangeLog
index 88770e313..9a5e5639a 100644
--- a/src/include/ChangeLog
+++ b/src/include/ChangeLog
@@ -1,3 +1,11 @@
+2002-06-21  Ezra Peisach  <epeisach@bu.edu>
+
+	* fake-addrinfo.h: If IPv6 support is compiled in, but the OS does
+	not provide in6addr_any in libc, provide a static copy.
+
+	* configure.in: If IPv6 support is compiled in, test for existence
+	of in6addr_any in libc.
+
 2002-06-21  Ken Raeburn  <raeburn@mit.edu>
 
 	* port-sockets.h [!_WIN32 && !HAVE_MACSOCK_H]: Include
diff --git a/src/include/configure.in b/src/include/configure.in
index 56f5baea1..a702a2acc 100644
--- a/src/include/configure.in
+++ b/src/include/configure.in
@@ -74,6 +74,33 @@ AC_CHECK_HEADERS(stdlib.h string.h stddef.h unistd.h sys/types.h sys/file.h sys/
 AC_HEADER_STDARG
 KRB5_AC_INET6
 dnl
+dnl If compiling with IPv6 support, test if in6addr_any functions.
+dnl Irix 6.5.16 defines it, but lacks support in the C library.
+if test $krb5_cv_inet6 = yes ; then
+AC_CACHE_CHECK([For in6addr_any definition in library], 
+  krb5_cv_var_in6addr_any,
+[AC_TRY_LINK([
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_MACSOCK_H
+#include <macsock.h>
+#else
+#include <sys/socket.h>
+#endif
+#include <netinet/in.h>
+#include <netdb.h>
+],[
+  struct sockaddr_in6 in;
+  in.sin6_addr = in6addr_any;
+],krb5_cv_var_in6addr_any=yes, krb5_cv_var_in6addr_any=no)])
+  if test $krb5_cv_var_in6addr_any = no; then
+    AC_DEFINE(NEED_INSIXADDR_ANY,1,[Define if in6addr_any is not defined in libc])
+  fi
+fi
+
+dnl
+dnl
 dnl check for ANSI stdio, esp "b" option to fopen().  This (unfortunately)
 dnl requires a run check...
 dnl
diff --git a/src/include/fake-addrinfo.h b/src/include/fake-addrinfo.h
index 5003becd2..8a937c192 100644
--- a/src/include/fake-addrinfo.h
+++ b/src/include/fake-addrinfo.h
@@ -893,6 +893,11 @@ int getnameinfo (const struct sockaddr *sa, socklen_t len,
 
 #endif /* WRAP_GETADDRINFO || WRAP_GETNAMEINFO */
 
+#if defined(KRB5_USE_INET6) && defined(NEED_INSIXADDR_ANY) 
+/* If compiling with IPv6 support and C library does not define in6addr_any */
+static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+#endif
+
 #ifdef ADDRINFO_UNDEF_INLINE
 # undef inline
 # undef ADDRINFO_UNDEF_INLINE
-- 
2.26.2