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annotate m4/inet_ntop.m4 @ 17363:5a51fb7777a9

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sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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298082962c0e Ensure that HAVE_* variables are set to 1 before they are set to 0.
Bruno Haible <bruno@clisp.org>
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1 # inet_ntop.m4 serial 19
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Eric Blake <eblake@redhat.com>
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2 dnl Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
96441be32be1 New module 'inet_ntop'.
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4 dnl gives unlimited permission to copy and/or distribute it,
96441be32be1 New module 'inet_ntop'.
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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_FUNC_INET_NTOP],
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8 [
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9 AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
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10
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8406478f0d13 Ensure the system declares inet_ntop, inet_pton when possible.
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11 dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
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12 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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13
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14 AC_REQUIRE([AC_C_RESTRICT])
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15
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16 dnl Most platforms that provide inet_ntop define it in libc.
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17 dnl Solaris 8..10 provide inet_ntop in libnsl instead.
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18 dnl Solaris 2.6..7 provide inet_ntop in libresolv instead.
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19 dnl Native Windows provides it in -lws2_32 instead, with a declaration in
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20 dnl <ws2tcpip.h>, and it uses stdcall calling convention, not cdecl
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21 dnl (hence we cannot use AC_CHECK_FUNCS, AC_SEARCH_LIBS to find it).
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22 HAVE_INET_NTOP=1
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23 INET_NTOP_LIB=
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24 gl_PREREQ_SYS_H_WINSOCK2
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25 if test $HAVE_WINSOCK2_H = 1; then
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26 AC_CHECK_DECLS([inet_ntop],,, [[#include <ws2tcpip.h>]])
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27 if test $ac_cv_have_decl_inet_ntop = yes; then
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28 dnl It needs to be overridden, because the stdcall calling convention
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29 dnl is not compliant with POSIX.
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30 REPLACE_INET_NTOP=1
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31 INET_NTOP_LIB="-lws2_32"
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32 else
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33 HAVE_DECL_INET_NTOP=0
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34 HAVE_INET_NTOP=0
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35 fi
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36 else
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37 gl_save_LIBS=$LIBS
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38 AC_SEARCH_LIBS([inet_ntop], [nsl resolv], [],
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39 [AC_CHECK_FUNCS([inet_ntop])
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40 if test $ac_cv_func_inet_ntop = no; then
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41 HAVE_INET_NTOP=0
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42 fi
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43 ])
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44 LIBS=$gl_save_LIBS
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45
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46 if test "$ac_cv_search_inet_ntop" != "no" \
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47 && test "$ac_cv_search_inet_ntop" != "none required"; then
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48 INET_NTOP_LIB="$ac_cv_search_inet_ntop"
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49 fi
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50
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51 AC_CHECK_HEADERS_ONCE([netdb.h])
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52 AC_CHECK_DECLS([inet_ntop],,,
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53 [[#include <arpa/inet.h>
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54 #if HAVE_NETDB_H
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55 # include <netdb.h>
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56 #endif
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57 ]])
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58 if test $ac_cv_have_decl_inet_ntop = no; then
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59 HAVE_DECL_INET_NTOP=0
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60 fi
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61 fi
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62 AC_SUBST([INET_NTOP_LIB])
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63 ])
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64
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65 # Prerequisites of lib/inet_ntop.c.
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66 AC_DEFUN([gl_PREREQ_INET_NTOP], [
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67 AC_REQUIRE([gl_SOCKET_FAMILIES])
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68 ])