contrib/ntp/sntp/m4/ntp_ipv6.m4

   1 dnl ######################################################################
   2 dnl Common IPv6 detection for NTP configure.ac files
   3 AC_DEFUN([NTP_IPV6], [
   4
   5 AC_CACHE_CHECK(
   6     [for struct sockaddr_storage],
   7     [ntp_cv_sockaddr_storage],
   8     [AC_COMPILE_IFELSE(
   9         [AC_LANG_PROGRAM(
  10             [[
  11                 #ifdef HAVE_SYS_TYPES_H
  12                 # include <sys/types.h>
  13                 #endif
  14                 #ifdef HAVE_SYS_SOCKET_H
  15                 # include <sys/socket.h>
  16                 #endif
  17                 #ifdef HAVE_NETINET_IN_H
  18                 # include <netinet/in.h>
  19                 #endif
  20             ]],
  21             [[
  22                 struct sockaddr_storage n;
  23             ]]
  24         )],
  25         [ntp_cv_sockaddr_storage=yes],
  26         [ntp_cv_sockaddr_storage=no]
  27     )]
  28 )
  29 case "$ntp_cv_sockaddr_storage" in
  30  yes)
  31     AC_DEFINE([HAVE_STRUCT_SOCKADDR_STORAGE], [1],
  32         [Does a system header define struct sockaddr_storage?])
  33     AC_CACHE_CHECK(
  34         [for sockaddr_storage.__ss_family],
  35         [ntp_cv_have___ss_family],
  36         [AC_COMPILE_IFELSE(
  37             [AC_LANG_PROGRAM(
  38                 [[
  39                     #ifdef HAVE_SYS_TYPES_H
  40                     # include <sys/types.h>
  41                     #endif
  42                     #ifdef HAVE_SYS_SOCKET_H
  43                     # include <sys/socket.h>
  44                     #endif
  45                     #ifdef HAVE_NETINET_IN_H
  46                     # include <netinet/in.h>
  47                     #endif
  48                 ]],
  49                 [[
  50                     struct sockaddr_storage s;
  51                     s.__ss_family = 1;
  52                 ]]
  53             )],
  54             [ntp_cv_have___ss_family=yes],
  55             [ntp_cv_have___ss_family=no]
  56         )]
  57     )
  58     case "$ntp_cv_have___ss_family" in
  59      yes)
  60         AC_DEFINE([HAVE___SS_FAMILY_IN_SS], [1],
  61                   [Does struct sockaddr_storage have __ss_family?])
  62     esac
  63     AH_VERBATIM(
  64         [HAVE___SS_FAMILY_IN_SS_VERBATIM],
  65         [
  66             /* Handle sockaddr_storage.__ss_family */
  67             #ifdef HAVE___SS_FAMILY_IN_SS
  68             # define ss_family __ss_family
  69             #endif /* HAVE___SS_FAMILY_IN_SS */
  70         ]
  71     )
  72 esac
  73
  74
  75 #
  76 # Look for in_port_t.
  77 #
  78 AC_CACHE_CHECK(
  79     [for in_port_t],
  80     [isc_cv_have_in_port_t],
  81     [AC_COMPILE_IFELSE(
  82         [AC_LANG_PROGRAM(
  83             [[
  84                 #include <sys/types.h>
  85                 #include <netinet/in.h>
  86             ]],
  87             [[
  88                 in_port_t port = 25;
  89                 return (0);
  90             ]]
  91         )],
  92         [isc_cv_have_in_port_t=yes],
  93         [isc_cv_have_in_port_t=no]
  94     )]
  95 )
  96 case "$isc_cv_have_in_port_t" in
  97  no)
  98         AC_DEFINE([ISC_PLATFORM_NEEDPORTT], [1],
  99             [Declare in_port_t?])
 100 esac
 101
 102 AC_CACHE_CHECK(
 103     [type of socklen arg for getsockname()],
 104     [ntp_cv_getsockname_socklen_type],
 105     [
 106     getsockname_socklen_type_found=no
 107     for getsockname_arg2 in 'struct sockaddr *' 'void *'; do
 108         for ntp_cv_getsockname_socklen_type in 'socklen_t' 'size_t' 'unsigned int' 'int'; do
 109             AC_COMPILE_IFELSE(
 110                 [AC_LANG_PROGRAM(
 111                     [[
 112                         #ifdef HAVE_SYS_TYPES_H
 113                         # include <sys/types.h>
 114                         #endif
 115                         #ifdef HAVE_SYS_SOCKET_H
 116                         # include <sys/socket.h>
 117                         #endif
 118                     ]], [[
 119                         extern
 120                         getsockname(int, $getsockname_arg2,
 121                                 $ntp_cv_getsockname_socklen_type *);
 122                     ]]
 123                 )],
 124                 [getsockname_socklen_type_found=yes ; break 2],
 125                 []
 126             )
 127         done
 128     done
 129     case "$getsockname_socklen_type_found" in
 130      no)
 131         ntp_cv_getsockname_socklen_type='socklen_t'
 132     esac
 133     AS_UNSET([getsockname_arg2])
 134     AS_UNSET([getsockname_socklen_type_found])
 135     ]
 136 )
 137 AC_DEFINE_UNQUOTED([GETSOCKNAME_SOCKLEN_TYPE],
 138                    [$ntp_cv_getsockname_socklen_type],
 139                    [What is getsockname()'s socklen type?])
 140
 141 AC_CACHE_CHECK(
 142     [struct sockaddr for sa_len],
 143     [isc_cv_platform_havesalen],
 144     [AC_COMPILE_IFELSE(
 145         [AC_LANG_PROGRAM(
 146             [[
 147                 #include <sys/types.h>
 148                 #include <sys/socket.h>
 149             ]],
 150             [[
 151                 extern struct sockaddr *ps;
 152                 return ps->sa_len;
 153             ]]
 154         )],
 155         [isc_cv_platform_havesalen=yes],
 156         [isc_cv_platform_havesalen=no]
 157     )]
 158 )
 159 case "$isc_cv_platform_havesalen" in
 160  yes)
 161     AC_DEFINE([ISC_PLATFORM_HAVESALEN], [1],
 162          [struct sockaddr has sa_len?])
 163 esac
 164
 165 AC_ARG_ENABLE(
 166     [ipv6],
 167     [AS_HELP_STRING(
 168         [--enable-ipv6],
 169         [s use IPv6?]
 170     )]
 171 )
 172
 173 case "$enable_ipv6" in
 174  yes|''|autodetect)
 175     case "$host" in
 176      powerpc-ibm-aix4*)
 177         ;;
 178      *)
 179         AC_DEFINE([WANT_IPV6], [1], [configure --enable-ipv6])
 180         ;;
 181     esac
 182     ;;
 183  no)
 184     ;;
 185 esac
 186
 187
 188 dnl [Bug 1984] ntp/libisc fails to compile on OS X 10.7 (Lion)
 189 case "$host" in
 190  *-*-darwin*)
 191     AC_DEFINE([__APPLE_USE_RFC_3542], [1], [Are we _special_?])
 192 esac
 193
 194
 195 AC_CACHE_CHECK(
 196     [for IPv6 structures],
 197     [isc_cv_found_ipv6],
 198     [AC_COMPILE_IFELSE(
 199         [AC_LANG_PROGRAM(
 200             [[
 201                 #include <sys/types.h>
 202                 #include <sys/socket.h>
 203                 #include <netinet/in.h>
 204             ]],
 205             [[
 206                 struct sockaddr_in6 sin6;
 207             ]]
 208         )],
 209         [isc_cv_found_ipv6=yes],
 210         [isc_cv_found_ipv6=no]
 211     )]
 212 )
 213
 214 #
 215 # See whether IPv6 support is provided via a Kame add-on.
 216 # This is done before other IPv6 linking tests so LIBS is properly set.
 217 #
 218 AC_MSG_CHECKING([for Kame IPv6 support])
 219 AC_ARG_WITH(
 220     [kame],
 221     [AS_HELP_STRING(
 222         [--with-kame],
 223         [- =/usr/local/v6]
 224     )],
 225     [use_kame="$withval"],
 226     [use_kame="no"]
 227 )
 228 case "$use_kame" in
 229  no)
 230     ;;
 231  yes)
 232     kame_path=/usr/local/v6
 233     ;;
 234  *)
 235     kame_path="$use_kame"
 236     ;;
 237 esac
 238 case "$use_kame" in
 239  no)
 240     AC_MSG_RESULT([no])
 241     ;;
 242  *)
 243     if test -f $kame_path/lib/libinet6.a; then
 244         AC_MSG_RESULT([$kame_path/lib/libinet6.a])
 245         LIBS="-L$kame_path/lib -linet6 $LIBS"
 246     else
 247         AC_MSG_ERROR([$kame_path/lib/libinet6.a not found.
 248
 249 Please choose the proper path with the following command:
 250
 251     configure --with-kame=PATH
 252 ])
 253     fi
 254     ;;
 255 esac
 256
 257 #
 258 # Whether netinet6/in6.h is needed has to be defined in isc/platform.h.
 259 # Including it on Kame-using platforms is very bad, though, because
 260 # Kame uses #error against direct inclusion.   So include it on only
 261 # the platform that is otherwise broken without it -- BSD/OS 4.0 through 4.1.
 262 # This is done before the in6_pktinfo check because that's what
 263 # netinet6/in6.h is needed for.
 264 #
 265 case "$host" in
 266  *-bsdi4.[[01]]*)
 267     AC_DEFINE([ISC_PLATFORM_NEEDNETINET6IN6H], [1],
 268         [Do we need netinet6/in6.h?])
 269     isc_netinet6in6_hack="#include <netinet6/in6.h>"
 270     ;;
 271  *)
 272     isc_netinet6in6_hack=""
 273     ;;
 274 esac
 275
 276 #
 277 # This is similar to the netinet6/in6.h issue.
 278 #
 279 case "$host" in
 280  *-sco-sysv*uw*|*-*-sysv*UnixWare*|*-*-sysv*OpenUNIX*)
 281     AC_DEFINE([ISC_PLATFORM_FIXIN6ISADDR], [1],
 282         [Do we need to fix in6isaddr?])
 283     isc_netinetin6_hack="#include <netinet/in6.h>"
 284     ;;
 285  *)
 286     isc_netinetin6_hack=""
 287     ;;
 288 esac
 289
 290
 291 case "$isc_cv_found_ipv6" in
 292  yes)
 293     AC_DEFINE([ISC_PLATFORM_HAVEIPV6], [1], [have IPv6?])
 294     AC_CACHE_CHECK(
 295         [for in6_pktinfo],
 296         [isc_cv_have_in6_pktinfo],
 297         [AC_COMPILE_IFELSE(
 298             [AC_LANG_PROGRAM(
 299                 [[
 300                     #include <sys/types.h>
 301                     #include <sys/socket.h>
 302                     #include <netinet/in.h>
 303                     $isc_netinetin6_hack
 304                     $isc_netinet6in6_hack
 305                 ]],
 306                 [[
 307                     struct in6_pktinfo xyzzy;
 308                 ]]
 309             )],
 310             [isc_cv_have_in6_pktinfo=yes],
 311             [isc_cv_have_in6_pktinfo=no]
 312         )]
 313     )
 314     case "$isc_cv_have_in6_pktinfo" in
 315      yes)
 316         AC_DEFINE([ISC_PLATFORM_HAVEIN6PKTINFO], [1],
 317                 [have struct in6_pktinfo?])
 318     esac
 319
 320
 321     # HMS: Use HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID instead?
 322     AC_CACHE_CHECK(
 323         [for sockaddr_in6.sin6_scope_id],
 324         [isc_cv_have_sin6_scope_id],
 325         [AC_COMPILE_IFELSE(
 326             [AC_LANG_PROGRAM(
 327                 [[
 328                     #include <sys/types.h>
 329                     #include <sys/socket.h>
 330                     #include <netinet/in.h>
 331                     $isc_netinetin6_hack
 332                     $isc_netinet6in6_hack
 333                 ]],
 334                 [[
 335                     struct sockaddr_in6 xyzzy;
 336                     xyzzy.sin6_scope_id = 0;
 337                 ]]
 338             )],
 339             [isc_cv_have_sin6_scope_id=yes],
 340             [isc_cv_have_sin6_scope_id=no]
 341         )]
 342     )
 343
 344     case "$isc_cv_have_sin6_scope_id" in
 345      yes)
 346         AC_DEFINE([ISC_PLATFORM_HAVESCOPEID], [1], [sin6_scope_id?])
 347     esac
 348 esac
 349
 350
 351 # We need this check run even without isc_cv_found_ipv6=yes
 352
 353 AC_CACHE_CHECK(
 354     [for in6addr_any],
 355     [isc_cv_in6addr_any_links],
 356     [
 357         SAVED_LIBS="$LIBS"
 358         LIBS="$LDADD_LIBNTP $LIBS"
 359         AC_LINK_IFELSE(
 360             [AC_LANG_PROGRAM(
 361                 AC_INCLUDES_DEFAULT [[
 362                     #include <sys/socket.h>
 363                     #include <netinet/in.h>
 364                     $isc_netinetin6_hack
 365                     $isc_netinet6in6_hack
 366                 ]],
 367                 [[
 368                     printf("%x", in6addr_any.s6_addr[15]);
 369                 ]]
 370             )],
 371             [isc_cv_in6addr_any_links=yes],
 372             [isc_cv_in6addr_any_links=no]
 373         )
 374         LIBS="$SAVED_LIBS"
 375         AS_UNSET([SAVED_LIBS])
 376     ]
 377 )
 378
 379 case "$isc_cv_in6addr_any_links" in
 380  no)
 381     AC_DEFINE([ISC_PLATFORM_NEEDIN6ADDRANY], [1], [missing in6addr_any?])
 382 esac
 383
 384
 385 AC_CACHE_CHECK(
 386     [for struct if_laddrconf],
 387     [isc_cv_struct_if_laddrconf],
 388     [AC_COMPILE_IFELSE(
 389         [AC_LANG_PROGRAM(
 390             [[
 391                 #include <sys/types.h>
 392                 #include <net/if6.h>
 393             ]],
 394             [[
 395                 struct if_laddrconf a;
 396             ]]
 397         )],
 398         [isc_cv_struct_if_laddrconf=yes],
 399         [isc_cv_struct_if_laddrconf=no]
 400     )]
 401 )
 402
 403 case "$isc_cv_struct_if_laddrconf" in
 404  yes)
 405     AC_DEFINE([ISC_PLATFORM_HAVEIF_LADDRCONF], [1],
 406         [have struct if_laddrconf?])
 407 esac
 408
 409 AC_CACHE_CHECK(
 410     [for struct if_laddrreq],
 411     isc_cv_struct_if_laddrreq,
 412     [AC_COMPILE_IFELSE(
 413         [AC_LANG_PROGRAM(
 414             [[
 415                 #include <sys/types.h>
 416                 #include <net/if6.h>
 417             ]],
 418             [[
 419                 struct if_laddrreq a;
 420             ]]
 421         )],
 422         [isc_cv_struct_if_laddrreq=yes],
 423         [isc_cv_struct_if_laddrreq=no]
 424     )]
 425 )
 426
 427 case "$isc_cv_struct_if_laddrreq" in
 428  yes)
 429     AC_DEFINE([ISC_PLATFORM_HAVEIF_LADDRREQ], [1],
 430         [have struct if_laddrreq?])
 431 esac
 432
 433 AC_CACHE_CHECK(
 434     [for multicast IP support],
 435     [ntp_cv_multicast],
 436     [
 437         ntp_cv_multicast=no
 438         case "$host" in
 439          i386-sequent-sysv4)
 440             ;;
 441          *)
 442             AC_COMPILE_IFELSE(
 443                 [AC_LANG_PROGRAM(
 444                     [[
 445                         #ifdef HAVE_NETINET_IN_H
 446                         # include <netinet/in.h>
 447                         #endif
 448                     ]],
 449                     [[
 450                         struct ip_mreq ipmr;
 451                         ipmr.imr_interface.s_addr = 0;
 452                     ]]
 453                 )],
 454                 [ntp_cv_multicast=yes],
 455                 []
 456             )
 457             ;;
 458         esac
 459     ]
 460 )
 461 case "$ntp_cv_multicast" in
 462  yes)
 463     AC_DEFINE([MCAST], [1], [Does the target support multicast IP?])
 464     AC_CACHE_CHECK(
 465         [arg type needed for setsockopt() IP*_MULTICAST_LOOP],
 466         [ntp_cv_typeof_ip_multicast_loop],
 467         [
 468             case "$host" in
 469              *-*-netbsd*|*-*-*linux*)
 470                 ntp_cv_typeof_ip_multicast_loop=u_int
 471                 ;;
 472              *)
 473                 ntp_cv_typeof_ip_multicast_loop=u_char
 474                 ;;
 475             esac
 476         ]
 477     )
 478     AC_DEFINE_UNQUOTED([TYPEOF_IP_MULTICAST_LOOP],
 479         [$ntp_cv_typeof_ip_multicast_loop],
 480         [What type to use for setsockopt])
 481 esac
 482
 483 AC_ARG_ENABLE(
 484     [getifaddrs],
 485     [AS_HELP_STRING(
 486         [--enable-getifaddrs],
 487         [+ Enable the use of getifaddrs() [[yes|no]].]
 488     )],
 489     [want_getifaddrs="$enableval"],
 490     [want_getifaddrs="yes"]
 491 )
 492
 493 case $want_getifaddrs in
 494  glibc)
 495     AC_MSG_WARN([--enable-getifaddrs=glibc is no longer required])
 496 esac
 497 case $want_getifaddrs in
 498  no)
 499     ;;
 500  *)
 501     SAVED_LIBS="$LIBS"
 502     LIBS="$LDADD_LIBNTP $LIBS"
 503     AC_CHECK_FUNCS([getifaddrs])
 504     LIBS="$SAVED_LIBS"
 505     AS_UNSET([SAVED_LIBS])
 506     ;;
 507 esac
 508
 509 #
 510 # Check for if_nametoindex() for IPv6 scoped addresses support
 511 #
 512 case "$host" in
 513  *-hp-hpux*)
 514     AC_SEARCH_LIBS([if_nametoindex], [ipv6])
 515 esac
 516 SAVED_LIBS="$LIBS"
 517 LIBS="$LDADD_LIBNTP $LIBS"
 518 AC_CHECK_FUNCS([if_nametoindex])
 519 LIBS="$SAVED_LIBS"
 520 AS_UNSET([SAVED_LIBS])
 521 case "$ac_cv_func_if_nametoindex" in
 522  yes)
 523         AC_DEFINE([ISC_PLATFORM_HAVEIFNAMETOINDEX], [1],
 524             [ISC: do we have if_nametoindex()?])
 525 esac
 526
 527 ])dnl
 528 dnl ======================================================================