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annotate m4/sockets.m4 @ 11386:23f58a4ffca0

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Followup to 2008-12-22: Remove unnecessary AC_FUNC_MBRTOWC invocations.
author Bruno Haible <bruno@clisp.org>
date Tue, 10 Mar 2009 01:19:40 +0100
parents de8c1000fcee
children 56ceeef91c22
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1 # sockets.m4 serial 5
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2 dnl Copyright (C) 2008, 2009 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_SOCKETS],
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8 [
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9 AC_REQUIRE([AC_C_INLINE])
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10
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11 gl_PREREQ_SYS_H_WINSOCK2 dnl for HAVE_WINSOCK2_H
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12 LIBSOCKET=
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13 if test $HAVE_WINSOCK2_H = 1; then
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14 dnl Native Windows API (not Cygwin).
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15 AC_CACHE_CHECK([if we need to call WSAStartup in winsock2.h and -lws2_32],
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16 [gl_cv_func_wsastartup], [
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17 gl_save_LIBS="$LIBS"
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18 LIBS="$LIBS -lws2_32"
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19 AC_TRY_LINK([
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20 #ifdef HAVE_WINSOCK2_H
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21 # include <winsock2.h>
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22 #endif], [
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23 WORD wVersionRequested = MAKEWORD(1, 1);
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24 WSADATA wsaData;
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25 int err = WSAStartup(wVersionRequested, &wsaData);
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26 WSACleanup ();],
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27 gl_cv_func_wsastartup=yes, gl_cv_func_wsastartup=no)
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28 LIBS="$gl_save_LIBS"
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29 ])
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30 if test "$gl_cv_func_wsastartup" = "yes"; then
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31 AC_DEFINE([WINDOWS_SOCKETS], [1], [Define if WSAStartup is needed.])
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32 LIBSOCKET='-lws2_32'
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33 fi
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34 else
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35 dnl Unix API.
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36 dnl Solaris has most socket functions in libsocket.
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37 dnl Haiku has most socket functions in libnetwork.
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38 dnl BeOS has most socket functions in libnet.
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39 AC_CACHE_CHECK([for library containing setsockopt], [gl_cv_lib_socket], [
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40 gl_cv_lib_socket=
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41 AC_TRY_LINK([extern
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42 #ifdef __cplusplus
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43 "C"
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44 #endif
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45 char setsockopt();], [setsockopt();],
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46 [],
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47 [gl_save_LIBS="$LIBS"
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48 LIBS="$gl_save_LIBS -lsocket"
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49 AC_TRY_LINK([extern
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50 #ifdef __cplusplus
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51 "C"
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52 #endif
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53 char setsockopt();], [setsockopt();],
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54 [gl_cv_lib_socket="-lsocket"])
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55 if test -z "$gl_cv_lib_socket"; then
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56 LIBS="$gl_save_LIBS -lnetwork"
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57 AC_TRY_LINK([extern
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58 #ifdef __cplusplus
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59 "C"
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60 #endif
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61 char setsockopt();], [setsockopt();],
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62 [gl_cv_lib_socket="-lnetwork"])
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63 if test -z "$gl_cv_lib_socket"; then
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64 LIBS="$gl_save_LIBS -lnet"
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65 AC_TRY_LINK([extern
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66 #ifdef __cplusplus
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67 "C"
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68 #endif
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69 char setsockopt();], [setsockopt();],
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70 [gl_cv_lib_socket="-lnet"])
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71 fi
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72 fi
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73 LIBS="$gl_save_LIBS"
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74 ])
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75 if test -z "$gl_cv_lib_socket"; then
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76 gl_cv_lib_socket="none needed"
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77 fi
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78 ])
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79 if test "$gl_cv_lib_socket" != "none needed"; then
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80 LIBSOCKET="$gl_cv_lib_socket"
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81 fi
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82 fi
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83 AC_SUBST([LIBSOCKET])
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84 gl_PREREQ_SOCKETS
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85 ])
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86
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87 # Prerequisites of lib/sockets.c.
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88 AC_DEFUN([gl_PREREQ_SOCKETS], [
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89 :
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90 ])