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1AC_DEFUN([AC_HAVE_INADDR_NONE],
2[AC_CACHE_CHECK([whether INADDR_NONE is defined], ac_cv_have_inaddr_none,
3 [AC_TRY_COMPILE([
4#ifdef HAVE_SYS_TYPES_H
5#include <sys/types.h>
6#endif
7#ifdef HAVE_SYS_SOCKET_H
8#include <sys/socket.h>
9#endif
10#ifdef HAVE_NETINET_IN_H
11#include <netinet/in.h>
12#endif
13#ifdef HAVE_ARPA_INET_H
14#include <arpa/inet.h>
15#endif
16],[
17unsigned long foo = INADDR_NONE;
18],
19 ac_cv_have_inaddr_none=yes,
20 ac_cv_have_inaddr_none=no)])
21 if test $ac_cv_have_inaddr_none != yes; then
22 AC_DEFINE(INADDR_NONE, 0xffffffff, [Define to value of INADDR_NONE if not provided by your system header files.])
23 fi])

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