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annotate m4/getaddrinfo.m4 @ 6646:c8acef83bf3f

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* sys_socket_h.m4 (gl_HEADER_SYS_SOCKET): Don't attempt using winsock2.h or ws2tcpip.h when sys/socket.h is present. Fixes 'present but cannot compile' warnings on cygwin. * socklen.m4 (gl_TYPE_SOCKLEN_T): Use gl_HEADER_SYS_SOCKET. Don't use ws2tcpip.h if sys/socket.h works. * getaddrinfo.m4 (gl_PREREQ_GETADDRINFO): Use gl_HEADER_SYS_SOCKET. (gl_GETADDRINFO): Don't use ws2tcpip.h when sys/socket.h is present.
author Simon Josefsson <simon@josefsson.org>
date Thu, 16 Feb 2006 09:48:07 +0000
parents 29248383a0c7
children f9e910a182f7
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6646
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1 # getaddrinfo.m4 serial 8
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2 dnl Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 AC_DEFUN([gl_GETADDRINFO],
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8 [
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9 AC_MSG_NOTICE([checking how to do getaddrinfo])
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10
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11 AC_SEARCH_LIBS(getaddrinfo, [nsl socket])
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12 AC_CHECK_FUNCS(getaddrinfo,, [
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13 AC_CACHE_CHECK(for getaddrinfo in ws2tcpip.h and -lws2_32,
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14 gl_cv_w32_getaddrinfo, [
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15 gl_cv_w32_getaddrinfo=no
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16 am_save_LIBS="$LIBS"
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17 LIBS="$LIBS -lws2_32"
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18 AC_TRY_LINK([
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19 #ifdef HAVE_WS2TCPIP_H
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20 #define WINVER 0x0501
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21 #include <ws2tcpip.h>
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22 #endif
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23 ], [getaddrinfo(0, 0, 0, 0);], gl_cv_w32_getaddrinfo=yes)
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24 LIBS="$am_save_LIBS"
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25 if test "$gl_cv_w32_getaddrinfo" = "yes"; then
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26 LIBS="$LIBS -lws2_32"
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27 else
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28 AC_LIBOBJ(getaddrinfo)
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29 fi
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30 ])])
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31
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32 AC_REPLACE_FUNCS(gai_strerror)
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33 gl_PREREQ_GETADDRINFO
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34 ])
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35
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36 # Prerequisites of lib/getaddrinfo.h and lib/getaddrinfo.c.
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37 AC_DEFUN([gl_PREREQ_GETADDRINFO], [
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38 AC_SEARCH_LIBS(gethostbyname, [inet nsl])
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39 AC_SEARCH_LIBS(getservbyname, [inet nsl socket xnet])
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40 AC_REQUIRE([gl_C_RESTRICT])
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41 AC_REQUIRE([gl_SOCKET_FAMILIES])
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42 AC_REQUIRE([gl_HEADER_SYS_SOCKET])
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43 AC_REQUIRE([AC_C_INLINE])
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44 AC_REQUIRE([AC_GNU_SOURCE])
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45 AC_CHECK_HEADERS_ONCE(netinet/in.h netdb.h)
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46 AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror],,,[
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47 /* sys/types.h is not needed according to POSIX, but the
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48 sys/socket.h in i386-unknown-freebsd4.10 and
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49 powerpc-apple-darwin5.5 required it. */
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50 #include <sys/types.h>
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51 #ifdef HAVE_SYS_SOCKET_H
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52 #include <sys/socket.h>
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53 #endif
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54 #ifdef HAVE_NETDB_H
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55 #include <netdb.h>
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56 #endif
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57 #ifdef HAVE_WS2TCPIP_H
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58 #define WINVER 0x0501
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59 #include <ws2tcpip.h>
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60 #endif
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61 ])
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62 AC_CHECK_TYPES([struct addrinfo],,,[
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63 #include <sys/types.h>
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64 #ifdef HAVE_SYS_SOCKET_H
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65 #include <sys/socket.h>
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66 #endif
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67 #ifdef HAVE_NETDB_H
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68 #include <netdb.h>
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69 #endif
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70 #ifdef HAVE_WS2TCPIP_H
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71 #define WINVER 0x0501
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72 #include <ws2tcpip.h>
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73 #endif
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74 ])
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75 ])