openssh/configure.ac

   1 # $Id$
   2 #
   3 # Copyright (c) 1999-2004 Damien Miller
   4 #
   5 # Permission to use, copy, modify, and distribute this software for any
   6 # purpose with or without fee is hereby granted, provided that the above
   7 # copyright notice and this permission notice appear in all copies.
   8 #
   9 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16
  17 AC_INIT(OpenSSH, Portable, openssh-unix-dev@mindrot.org)
  18 AC_REVISION($Revision$)
  19 AC_CONFIG_SRCDIR([ssh.c])
  20
  21 AC_CONFIG_HEADER(config.h)
  22 AC_PROG_CC
  23 AC_CANONICAL_HOST
  24 AC_C_BIGENDIAN
  25
  26 # Checks for programs.
  27 AC_PROG_AWK
  28 AC_PROG_CPP
  29 AC_PROG_RANLIB
  30 AC_PROG_INSTALL
  31 AC_PROG_EGREP
  32 AC_PATH_PROG(AR, ar)
  33 AC_PATH_PROG(CAT, cat)
  34 AC_PATH_PROG(KILL, kill)
  35 AC_PATH_PROGS(PERL, perl5 perl)
  36 AC_PATH_PROG(SED, sed)
  37 AC_SUBST(PERL)
  38 AC_PATH_PROG(ENT, ent)
  39 AC_SUBST(ENT)
  40 AC_PATH_PROG(TEST_MINUS_S_SH, bash)
  41 AC_PATH_PROG(TEST_MINUS_S_SH, ksh)
  42 AC_PATH_PROG(TEST_MINUS_S_SH, sh)
  43 AC_PATH_PROG(SH, sh)
  44 AC_SUBST(TEST_SHELL,sh)
  45
  46 dnl for buildpkg.sh
  47 AC_PATH_PROG(PATH_GROUPADD_PROG, groupadd, groupadd,
  48         [/usr/sbin${PATH_SEPARATOR}/etc])
  49 AC_PATH_PROG(PATH_USERADD_PROG, useradd, useradd,
  50         [/usr/sbin${PATH_SEPARATOR}/etc])
  51 AC_CHECK_PROG(MAKE_PACKAGE_SUPPORTED, pkgmk, yes, no)
  52 if test -x /sbin/sh; then
  53         AC_SUBST(STARTUP_SCRIPT_SHELL,/sbin/sh)
  54 else
  55         AC_SUBST(STARTUP_SCRIPT_SHELL,/bin/sh)
  56 fi
  57
  58 # System features
  59 AC_SYS_LARGEFILE
  60
  61 if test -z "$AR" ; then
  62         AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***])
  63 fi
  64
  65 # Use LOGIN_PROGRAM from environment if possible
  66 if test ! -z "$LOGIN_PROGRAM" ; then
  67         AC_DEFINE_UNQUOTED(LOGIN_PROGRAM_FALLBACK, "$LOGIN_PROGRAM",
  68                 [If your header files don't define LOGIN_PROGRAM,
  69                 then use this (detected) from environment and PATH])
  70 else
  71         # Search for login
  72         AC_PATH_PROG(LOGIN_PROGRAM_FALLBACK, login)
  73         if test ! -z "$LOGIN_PROGRAM_FALLBACK" ; then
  74                 AC_DEFINE_UNQUOTED(LOGIN_PROGRAM_FALLBACK, "$LOGIN_PROGRAM_FALLBACK")
  75         fi
  76 fi
  77
  78 AC_PATH_PROG(PATH_PASSWD_PROG, passwd)
  79 if test ! -z "$PATH_PASSWD_PROG" ; then
  80         AC_DEFINE_UNQUOTED(_PATH_PASSWD_PROG, "$PATH_PASSWD_PROG",
  81                 [Full path of your "passwd" program])
  82 fi
  83
  84 if test -z "$LD" ; then
  85         LD=$CC
  86 fi
  87 AC_SUBST(LD)
  88
  89 AC_C_INLINE
  90
  91 AC_CHECK_DECL(LLONG_MAX, have_llong_max=1, , [#include <limits.h>])
  92
  93 use_stack_protector=1
  94 AC_ARG_WITH(stackprotect,
  95     [  --without-stackprotect  Don't use compiler's stack protection], [
  96     if test "x$withval" = "xno"; then
  97         use_stack_protector=0
  98     fi ])
  99
 100 if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
 101         CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wuninitialized"
 102         GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
 103         case $GCC_VER in
 104                 1.*) no_attrib_nonnull=1 ;;
 105                 2.8* | 2.9*)
 106                      CFLAGS="$CFLAGS -Wsign-compare"
 107                      no_attrib_nonnull=1
 108                      ;;
 109                 2.*) no_attrib_nonnull=1 ;;
 110                 3.*) CFLAGS="$CFLAGS -Wsign-compare" ;;
 111                 4.*) CFLAGS="$CFLAGS -Wsign-compare -Wno-pointer-sign" ;;
 112                 *) ;;
 113         esac
 114
 115         # -fstack-protector-all doesn't always work for some GCC versions
 116         # and/or platforms, so we test if we can.  If it's not supported
 117         # on a give platform gcc will emit a warning so we use -Werror.
 118         if test "x$use_stack_protector" = "x1"; then
 119             for t in -fstack-protector-all -fstack-protector; do
 120                 AC_MSG_CHECKING(if $CC supports $t)
 121                 saved_CFLAGS="$CFLAGS"
 122                 saved_LDFLAGS="$LDFLAGS"
 123                 CFLAGS="$CFLAGS $t -Werror"
 124                 LDFLAGS="$LDFLAGS $t -Werror"
 125                 AC_LINK_IFELSE(
 126                         [AC_LANG_SOURCE([
 127 #include <stdlib.h>
 128 int main(void){return 0;}
 129                          ])],
 130                     [ AC_MSG_RESULT(yes)
 131                       CFLAGS="$saved_CFLAGS $t"
 132                       LDFLAGS="$saved_LDFLAGS $t"
 133                       AC_MSG_CHECKING(if $t works)
 134                       AC_RUN_IFELSE(
 135                         [AC_LANG_SOURCE([
 136 #include <stdlib.h>
 137 int main(void){exit(0);}
 138                         ])],
 139                         [ AC_MSG_RESULT(yes)
 140                           break ],
 141                         [ AC_MSG_RESULT(no) ],
 142                         [ AC_MSG_WARN([cross compiling: cannot test])
 143                           break ]
 144                       )
 145                     ],
 146                     [ AC_MSG_RESULT(no) ]
 147                 )
 148                 CFLAGS="$saved_CFLAGS"
 149                 LDFLAGS="$saved_LDFLAGS"
 150             done
 151         fi
 152
 153         if test -z "$have_llong_max"; then
 154                 # retry LLONG_MAX with -std=gnu99, needed on some Linuxes
 155                 unset ac_cv_have_decl_LLONG_MAX
 156                 saved_CFLAGS="$CFLAGS"
 157                 CFLAGS="$CFLAGS -std=gnu99"
 158                 AC_CHECK_DECL(LLONG_MAX,
 159                     [have_llong_max=1],
 160                     [CFLAGS="$saved_CFLAGS"],
 161                     [#include <limits.h>]
 162                 )
 163         fi
 164 fi
 165
 166 if test "x$no_attrib_nonnull" != "x1" ; then
 167         AC_DEFINE(HAVE_ATTRIBUTE__NONNULL__, 1, [Have attribute nonnull])
 168 fi
 169
 170 AC_ARG_WITH(rpath,
 171         [  --without-rpath         Disable auto-added -R linker paths],
 172         [
 173                 if test "x$withval" = "xno" ; then
 174                         need_dash_r=""
 175                 fi
 176                 if test "x$withval" = "xyes" ; then
 177                         need_dash_r=1
 178                 fi
 179         ]
 180 )
 181
 182 # Allow user to specify flags
 183 AC_ARG_WITH(cflags,
 184         [  --with-cflags           Specify additional flags to pass to compiler],
 185         [
 186                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
 187                     test "x${withval}" != "xyes"; then
 188                         CFLAGS="$CFLAGS $withval"
 189                 fi
 190         ]
 191 )
 192 AC_ARG_WITH(cppflags,
 193         [  --with-cppflags         Specify additional flags to pass to preprocessor] ,
 194         [
 195                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
 196                     test "x${withval}" != "xyes"; then
 197                         CPPFLAGS="$CPPFLAGS $withval"
 198                 fi
 199         ]
 200 )
 201 AC_ARG_WITH(ldflags,
 202         [  --with-ldflags          Specify additional flags to pass to linker],
 203         [
 204                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
 205                     test "x${withval}" != "xyes"; then
 206                         LDFLAGS="$LDFLAGS $withval"
 207                 fi
 208         ]
 209 )
 210 AC_ARG_WITH(libs,
 211         [  --with-libs             Specify additional libraries to link with],
 212         [
 213                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
 214                     test "x${withval}" != "xyes"; then
 215                         LIBS="$LIBS $withval"
 216                 fi
 217         ]
 218 )
 219 AC_ARG_WITH(Werror,
 220         [  --with-Werror           Build main code with -Werror],
 221         [
 222                 if test -n "$withval"  &&  test "x$withval" != "xno"; then
 223                         werror_flags="-Werror"
 224                         if test "x${withval}" != "xyes"; then
 225                                 werror_flags="$withval"
 226                         fi
 227                 fi
 228         ]
 229 )
 230
 231 AC_CHECK_HEADERS( \
 232         bstring.h \
 233         crypt.h \
 234         crypto/sha2.h \
 235         dirent.h \
 236         endian.h \
 237         features.h \
 238         fcntl.h \
 239         floatingpoint.h \
 240         getopt.h \
 241         glob.h \
 242         ia.h \
 243         iaf.h \
 244         limits.h \
 245         login.h \
 246         maillock.h \
 247         ndir.h \
 248         net/if_tun.h \
 249         netdb.h \
 250         netgroup.h \
 251         pam/pam_appl.h \
 252         paths.h \
 253         poll.h \
 254         pty.h \
 255         readpassphrase.h \
 256         rpc/types.h \
 257         security/pam_appl.h \
 258         sha2.h \
 259         shadow.h \
 260         stddef.h \
 261         stdint.h \
 262         string.h \
 263         strings.h \
 264         sys/audit.h \
 265         sys/bitypes.h \
 266         sys/bsdtty.h \
 267         sys/cdefs.h \
 268         sys/dir.h \
 269         sys/mman.h \
 270         sys/ndir.h \
 271         sys/poll.h \
 272         sys/prctl.h \
 273         sys/pstat.h \
 274         sys/select.h \
 275         sys/stat.h \
 276         sys/stream.h \
 277         sys/stropts.h \
 278         sys/strtio.h \
 279         sys/sysmacros.h \
 280         sys/time.h \
 281         sys/timers.h \
 282         sys/un.h \
 283         time.h \
 284         tmpdir.h \
 285         ttyent.h \
 286         ucred.h \
 287         unistd.h \
 288         usersec.h \
 289         util.h \
 290         utime.h \
 291         utmp.h \
 292         utmpx.h \
 293         vis.h \
 294 )
 295
 296 # lastlog.h requires sys/time.h to be included first on Solaris
 297 AC_CHECK_HEADERS(lastlog.h, [], [], [
 298 #ifdef HAVE_SYS_TIME_H
 299 # include <sys/time.h>
 300 #endif
 301 ])
 302
 303 # sys/ptms.h requires sys/stream.h to be included first on Solaris
 304 AC_CHECK_HEADERS(sys/ptms.h, [], [], [
 305 #ifdef HAVE_SYS_STREAM_H
 306 # include <sys/stream.h>
 307 #endif
 308 ])
 309
 310 # login_cap.h requires sys/types.h on NetBSD
 311 AC_CHECK_HEADERS(login_cap.h, [], [], [
 312 #include <sys/types.h>
 313 ])
 314
 315 # Messages for features tested for in target-specific section
 316 SIA_MSG="no"
 317 SPC_MSG="no"
 318
 319 # Check for some target-specific stuff
 320 case "$host" in
 321 *-*-aix*)
 322         # Some versions of VAC won't allow macro redefinitions at
 323         # -qlanglevel=ansi, and autoconf 2.60 sometimes insists on using that
 324         # particularly with older versions of vac or xlc.
 325         # It also throws errors about null macro argments, but these are
 326         # not fatal.
 327         AC_MSG_CHECKING(if compiler allows macro redefinitions)
 328         AC_COMPILE_IFELSE(
 329             [AC_LANG_SOURCE([[
 330 #define testmacro foo
 331 #define testmacro bar
 332 int main(void) { exit(0); }
 333             ]])],
 334             [ AC_MSG_RESULT(yes) ],
 335             [ AC_MSG_RESULT(no)
 336               CC="`echo $CC | sed 's/-qlanglvl\=ansi//g'`"
 337               LD="`echo $LD | sed 's/-qlanglvl\=ansi//g'`"
 338               CFLAGS="`echo $CFLAGS | sed 's/-qlanglvl\=ansi//g'`"
 339               CPPFLAGS="`echo $CPPFLAGS | sed 's/-qlanglvl\=ansi//g'`"
 340             ]
 341         )
 342
 343         AC_MSG_CHECKING([how to specify blibpath for linker ($LD)])
 344         if (test -z "$blibpath"); then
 345                 blibpath="/usr/lib:/lib"
 346         fi
 347         saved_LDFLAGS="$LDFLAGS"
 348         if test "$GCC" = "yes"; then
 349                 flags="-Wl,-blibpath: -Wl,-rpath, -blibpath:"
 350         else
 351                 flags="-blibpath: -Wl,-blibpath: -Wl,-rpath,"
 352         fi
 353         for tryflags in $flags ;do
 354                 if (test -z "$blibflags"); then
 355                         LDFLAGS="$saved_LDFLAGS $tryflags$blibpath"
 356                         AC_TRY_LINK([], [], [blibflags=$tryflags])
 357                 fi
 358         done
 359         if (test -z "$blibflags"); then
 360                 AC_MSG_RESULT(not found)
 361                 AC_MSG_ERROR([*** must be able to specify blibpath on AIX - check config.log])
 362         else
 363                 AC_MSG_RESULT($blibflags)
 364         fi
 365         LDFLAGS="$saved_LDFLAGS"
 366         dnl Check for authenticate.  Might be in libs.a on older AIXes
 367         AC_CHECK_FUNC(authenticate, [AC_DEFINE(WITH_AIXAUTHENTICATE, 1,
 368                 [Define if you want to enable AIX4's authenticate function])],
 369                 [AC_CHECK_LIB(s,authenticate,
 370                         [ AC_DEFINE(WITH_AIXAUTHENTICATE)
 371                                 LIBS="$LIBS -ls"
 372                         ])
 373                 ])
 374         dnl Check for various auth function declarations in headers.
 375         AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess,
 376             passwdexpired, setauthdb], , , [#include <usersec.h>])
 377         dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
 378         AC_CHECK_DECLS(loginfailed,
 379                  [AC_MSG_CHECKING(if loginfailed takes 4 arguments)
 380                   AC_TRY_COMPILE(
 381                         [#include <usersec.h>],
 382                         [(void)loginfailed("user","host","tty",0);],
 383                         [AC_MSG_RESULT(yes)
 384                          AC_DEFINE(AIX_LOGINFAILED_4ARG, 1,
 385                                 [Define if your AIX loginfailed() function
 386                                 takes 4 arguments (AIX >= 5.2)])],
 387                         [AC_MSG_RESULT(no)]
 388                 )],
 389                 [],
 390                 [#include <usersec.h>]
 391         )
 392         AC_CHECK_FUNCS(getgrset setauthdb)
 393         AC_CHECK_DECL(F_CLOSEM,
 394             AC_DEFINE(HAVE_FCNTL_CLOSEM, 1, [Use F_CLOSEM fcntl for closefrom]),
 395             [],
 396             [ #include <limits.h>
 397               #include <fcntl.h> ]
 398         )
 399         check_for_aix_broken_getaddrinfo=1
 400         AC_DEFINE(BROKEN_REALPATH, 1, [Define if you have a broken realpath.])
 401         AC_DEFINE(SETEUID_BREAKS_SETUID, 1,
 402             [Define if your platform breaks doing a seteuid before a setuid])
 403         AC_DEFINE(BROKEN_SETREUID, 1, [Define if your setreuid() is broken])
 404         AC_DEFINE(BROKEN_SETREGID, 1, [Define if your setregid() is broken])
 405         dnl AIX handles lastlog as part of its login message
 406         AC_DEFINE(DISABLE_LASTLOG, 1, [Define if you don't want to use lastlog])
 407         AC_DEFINE(LOGIN_NEEDS_UTMPX, 1,
 408                 [Some systems need a utmpx entry for /bin/login to work])
 409         AC_DEFINE(SPT_TYPE,SPT_REUSEARGV,
 410                 [Define to a Set Process Title type if your system is
 411                 supported by bsd-setproctitle.c])
 412         AC_DEFINE(SSHPAM_CHAUTHTOK_NEEDS_RUID, 1,
 413             [AIX 5.2 and 5.3 (and presumably newer) require this])
 414         AC_DEFINE(PTY_ZEROREAD, 1, [read(1) can return 0 for a non-closed fd])
 415         ;;
 416 *-*-cygwin*)
 417         check_for_libcrypt_later=1
 418         LIBS="$LIBS /usr/lib/textreadmode.o"
 419         AC_DEFINE(HAVE_CYGWIN, 1, [Define if you are on Cygwin])
 420         AC_DEFINE(USE_PIPES, 1, [Use PIPES instead of a socketpair()])
 421         AC_DEFINE(DISABLE_SHADOW, 1,
 422                 [Define if you want to disable shadow passwords])
 423         AC_DEFINE(IP_TOS_IS_BROKEN, 1,
 424                 [Define if your system choked on IP TOS setting])
 425         AC_DEFINE(NO_X11_UNIX_SOCKETS, 1,
 426                 [Define if X11 doesn't support AF_UNIX sockets on that system])
 427         AC_DEFINE(NO_IPPORT_RESERVED_CONCEPT, 1,
 428                 [Define if the concept of ports only accessible to
 429                 superusers isn't known])
 430         AC_DEFINE(DISABLE_FD_PASSING, 1,
 431                 [Define if your platform needs to skip post auth
 432                 file descriptor passing])
 433         ;;
 434 *-*-dgux*)
 435         AC_DEFINE(IP_TOS_IS_BROKEN)
 436         AC_DEFINE(SETEUID_BREAKS_SETUID)
 437         AC_DEFINE(BROKEN_SETREUID)
 438         AC_DEFINE(BROKEN_SETREGID)
 439         ;;
 440 *-*-darwin*)
 441         AC_MSG_CHECKING(if we have working getaddrinfo)
 442         AC_TRY_RUN([#include <mach-o/dyld.h>
 443 main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
 444                 exit(0);
 445         else
 446                 exit(1);
 447 }], [AC_MSG_RESULT(working)],
 448         [AC_MSG_RESULT(buggy)
 449         AC_DEFINE(BROKEN_GETADDRINFO, 1, [getaddrinfo is broken (if present)])],
 450         [AC_MSG_RESULT(assume it is working)])
 451         AC_DEFINE(SETEUID_BREAKS_SETUID)
 452         AC_DEFINE(BROKEN_SETREUID)
 453         AC_DEFINE(BROKEN_SETREGID)
 454         AC_DEFINE(BROKEN_GLOB, 1, [OS X glob does not do what we expect])
 455         AC_DEFINE_UNQUOTED(BIND_8_COMPAT, 1,
 456                 [Define if your resolver libs need this for getrrsetbyname])
 457         AC_DEFINE(SSH_TUN_FREEBSD, 1, [Open tunnel devices the FreeBSD way])
 458         AC_DEFINE(SSH_TUN_COMPAT_AF, 1,
 459             [Use tunnel device compatibility to OpenBSD])
 460         AC_DEFINE(SSH_TUN_PREPEND_AF, 1,
 461             [Prepend the address family to IP tunnel traffic])
 462         m4_pattern_allow(AU_IPv)
 463         AC_CHECK_DECL(AU_IPv4, [],
 464             AC_DEFINE(AU_IPv4, 0, [System only supports IPv4 audit records])
 465             [#include <bsm/audit.h>]
 466         )
 467         ;;
 468 *-*-dragonfly*)
 469         SSHDLIBS="$SSHDLIBS -lcrypt"
 470         ;;
 471 *-*-hpux*)
 472         # first we define all of the options common to all HP-UX releases
 473         CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
 474         IPADDR_IN_DISPLAY=yes
 475         AC_DEFINE(USE_PIPES)
 476         AC_DEFINE(LOGIN_NO_ENDOPT, 1,
 477             [Define if your login program cannot handle end of options ("--")])
 478         AC_DEFINE(LOGIN_NEEDS_UTMPX)
 479         AC_DEFINE(LOCKED_PASSWD_STRING, "*",
 480                 [String used in /etc/passwd to denote locked account])
 481         AC_DEFINE(SPT_TYPE,SPT_PSTAT)
 482         MAIL="/var/mail/username"
 483         LIBS="$LIBS -lsec"
 484         AC_CHECK_LIB(xnet, t_error, ,
 485             AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
 486
 487         # next, we define all of the options specific to major releases
 488         case "$host" in
 489         *-*-hpux10*)
 490                 if test -z "$GCC"; then
 491                         CFLAGS="$CFLAGS -Ae"
 492                 fi
 493                 ;;
 494         *-*-hpux11*)
 495                 AC_DEFINE(PAM_SUN_CODEBASE, 1,
 496                         [Define if you are using Solaris-derived PAM which
 497                         passes pam_messages to the conversation function
 498                         with an extra level of indirection])
 499                 AC_DEFINE(DISABLE_UTMP, 1,
 500                         [Define if you don't want to use utmp])
 501                 AC_DEFINE(USE_BTMP, 1, [Use btmp to log bad logins])
 502                 check_for_hpux_broken_getaddrinfo=1
 503                 check_for_conflicting_getspnam=1
 504                 ;;
 505         esac
 506
 507         # lastly, we define options specific to minor releases
 508         case "$host" in
 509         *-*-hpux10.26)
 510                 AC_DEFINE(HAVE_SECUREWARE, 1,
 511                         [Define if you have SecureWare-based
 512                         protected password database])
 513                 disable_ptmx_check=yes
 514                 LIBS="$LIBS -lsecpw"
 515                 ;;
 516         esac
 517         ;;
 518 *-*-irix5*)
 519         PATH="$PATH:/usr/etc"
 520         AC_DEFINE(BROKEN_INET_NTOA, 1,
 521                 [Define if you system's inet_ntoa is busted
 522                 (e.g. Irix gcc issue)])
 523         AC_DEFINE(SETEUID_BREAKS_SETUID)
 524         AC_DEFINE(BROKEN_SETREUID)
 525         AC_DEFINE(BROKEN_SETREGID)
 526         AC_DEFINE(WITH_ABBREV_NO_TTY, 1,
 527                 [Define if you shouldn't strip 'tty' from your
 528                 ttyname in [uw]tmp])
 529         AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
 530         ;;
 531 *-*-irix6*)
 532         PATH="$PATH:/usr/etc"
 533         AC_DEFINE(WITH_IRIX_ARRAY, 1,
 534                 [Define if you have/want arrays
 535                 (cluster-wide session managment, not C arrays)])
 536         AC_DEFINE(WITH_IRIX_PROJECT, 1,
 537                 [Define if you want IRIX project management])
 538         AC_DEFINE(WITH_IRIX_AUDIT, 1,
 539                 [Define if you want IRIX audit trails])
 540         AC_CHECK_FUNC(jlimit_startjob, [AC_DEFINE(WITH_IRIX_JOBS, 1,
 541                 [Define if you want IRIX kernel jobs])])
 542         AC_DEFINE(BROKEN_INET_NTOA)
 543         AC_DEFINE(SETEUID_BREAKS_SETUID)
 544         AC_DEFINE(BROKEN_SETREUID)
 545         AC_DEFINE(BROKEN_SETREGID)
 546         AC_DEFINE(BROKEN_UPDWTMPX, 1, [updwtmpx is broken (if present)])
 547         AC_DEFINE(WITH_ABBREV_NO_TTY)
 548         AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
 549         ;;
 550 *-*-linux*)
 551         no_dev_ptmx=1
 552         check_for_libcrypt_later=1
 553         check_for_openpty_ctty_bug=1
 554         AC_DEFINE(DONT_TRY_OTHER_AF, 1, [Workaround more Linux IPv6 quirks])
 555         AC_DEFINE(PAM_TTY_KLUDGE, 1,
 556                 [Work around problematic Linux PAM modules handling of PAM_TTY])
 557         AC_DEFINE(LOCKED_PASSWD_PREFIX, "!",
 558                 [String used in /etc/passwd to denote locked account])
 559         AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)
 560         AC_DEFINE(LINK_OPNOTSUPP_ERRNO, EPERM,
 561                 [Define to whatever link() returns for "not supported"
 562                 if it doesn't return EOPNOTSUPP.])
 563         AC_DEFINE(_PATH_BTMP, "/var/log/btmp", [log for bad login attempts])
 564         AC_DEFINE(USE_BTMP)
 565         inet6_default_4in6=yes
 566         case `uname -r` in
 567         1.*|2.0.*)
 568                 AC_DEFINE(BROKEN_CMSG_TYPE, 1,
 569                         [Define if cmsg_type is not passed correctly])
 570                 ;;
 571         esac
 572         # tun(4) forwarding compat code
 573         AC_CHECK_HEADERS(linux/if_tun.h)
 574         if test "x$ac_cv_header_linux_if_tun_h" = "xyes" ; then
 575                 AC_DEFINE(SSH_TUN_LINUX, 1,
 576                     [Open tunnel devices the Linux tun/tap way])
 577                 AC_DEFINE(SSH_TUN_COMPAT_AF, 1,
 578                     [Use tunnel device compatibility to OpenBSD])
 579                 AC_DEFINE(SSH_TUN_PREPEND_AF, 1,
 580                     [Prepend the address family to IP tunnel traffic])
 581         fi
 582         ;;
 583 mips-sony-bsd|mips-sony-newsos4)
 584         AC_DEFINE(NEED_SETPGRP, 1, [Need setpgrp to acquire controlling tty])
 585         SONY=1
 586         ;;
 587 *-*-netbsd*)
 588         check_for_libcrypt_before=1
 589         if test "x$withval" != "xno" ; then
 590                 need_dash_r=1
 591         fi
 592         AC_DEFINE(SSH_TUN_FREEBSD, 1, [Open tunnel devices the FreeBSD way])
 593         AC_CHECK_HEADER([net/if_tap.h], ,
 594             AC_DEFINE(SSH_TUN_NO_L2, 1, [No layer 2 tunnel support]))
 595         AC_DEFINE(SSH_TUN_PREPEND_AF, 1,
 596             [Prepend the address family to IP tunnel traffic])
 597         ;;
 598 *-*-freebsd*)
 599         check_for_libcrypt_later=1
 600         AC_DEFINE(LOCKED_PASSWD_PREFIX, "*LOCKED*", [Account locked with pw(1)])
 601         AC_DEFINE(SSH_TUN_FREEBSD, 1, [Open tunnel devices the FreeBSD way])
 602         AC_CHECK_HEADER([net/if_tap.h], ,
 603             AC_DEFINE(SSH_TUN_NO_L2, 1, [No layer 2 tunnel support]))
 604         AC_DEFINE(BROKEN_GLOB, 1, [FreeBSD glob does not do what we need])
 605         ;;
 606 *-*-bsdi*)
 607         AC_DEFINE(SETEUID_BREAKS_SETUID)
 608         AC_DEFINE(BROKEN_SETREUID)
 609         AC_DEFINE(BROKEN_SETREGID)
 610         ;;
 611 *-next-*)
 612         conf_lastlog_location="/usr/adm/lastlog"
 613         conf_utmp_location=/etc/utmp
 614         conf_wtmp_location=/usr/adm/wtmp
 615         MAIL=/usr/spool/mail
 616         AC_DEFINE(HAVE_NEXT, 1, [Define if you are on NeXT])
 617         AC_DEFINE(BROKEN_REALPATH)
 618         AC_DEFINE(USE_PIPES)
 619         AC_DEFINE(BROKEN_SAVED_UIDS, 1, [Needed for NeXT])
 620         ;;
 621 *-*-openbsd*)
 622         AC_DEFINE(HAVE_ATTRIBUTE__SENTINEL__, 1, [OpenBSD's gcc has sentinel])
 623         AC_DEFINE(HAVE_ATTRIBUTE__BOUNDED__, 1, [OpenBSD's gcc has bounded])
 624         AC_DEFINE(SSH_TUN_OPENBSD, 1, [Open tunnel devices the OpenBSD way])
 625         AC_DEFINE(SYSLOG_R_SAFE_IN_SIGHAND, 1,
 626             [syslog_r function is safe to use in in a signal handler])
 627         ;;
 628 *-*-solaris*)
 629         if test "x$withval" != "xno" ; then
 630                 need_dash_r=1
 631         fi
 632         AC_DEFINE(PAM_SUN_CODEBASE)
 633         AC_DEFINE(LOGIN_NEEDS_UTMPX)
 634         AC_DEFINE(LOGIN_NEEDS_TERM, 1,
 635                 [Some versions of /bin/login need the TERM supplied
 636                 on the commandline])
 637         AC_DEFINE(PAM_TTY_KLUDGE)
 638         AC_DEFINE(SSHPAM_CHAUTHTOK_NEEDS_RUID, 1,
 639                 [Define if pam_chauthtok wants real uid set
 640                 to the unpriv'ed user])
 641         AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
 642         # Pushing STREAMS modules will cause sshd to acquire a controlling tty.
 643         AC_DEFINE(SSHD_ACQUIRES_CTTY, 1,
 644                 [Define if sshd somehow reacquires a controlling TTY
 645                 after setsid()])
 646         AC_DEFINE(PASSWD_NEEDS_USERNAME, 1, [must supply username to passwd
 647                 in case the name is longer than 8 chars])
 648         external_path_file=/etc/default/login
 649         # hardwire lastlog location (can't detect it on some versions)
 650         conf_lastlog_location="/var/adm/lastlog"
 651         AC_MSG_CHECKING(for obsolete utmp and wtmp in solaris2.x)
 652         sol2ver=`echo "$host"| sed -e 's/.*[[0-9]]\.//'`
 653         if test "$sol2ver" -ge 8; then
 654                 AC_MSG_RESULT(yes)
 655                 AC_DEFINE(DISABLE_UTMP)
 656                 AC_DEFINE(DISABLE_WTMP, 1,
 657                         [Define if you don't want to use wtmp])
 658         else
 659                 AC_MSG_RESULT(no)
 660         fi
 661         AC_ARG_WITH(solaris-contracts,
 662                 [  --with-solaris-contracts Enable Solaris process contracts (experimental)],
 663                 [
 664                 AC_CHECK_LIB(contract, ct_tmpl_activate,
 665                         [ AC_DEFINE(USE_SOLARIS_PROCESS_CONTRACTS, 1,
 666                                 [Define if you have Solaris process contracts])
 667                           SSHDLIBS="$SSHDLIBS -lcontract"
 668                           AC_SUBST(SSHDLIBS)
 669                           SPC_MSG="yes" ], )
 670                 ],
 671         )
 672         ;;
 673 *-*-sunos4*)
 674         CPPFLAGS="$CPPFLAGS -DSUNOS4"
 675         AC_CHECK_FUNCS(getpwanam)
 676         AC_DEFINE(PAM_SUN_CODEBASE)
 677         conf_utmp_location=/etc/utmp
 678         conf_wtmp_location=/var/adm/wtmp
 679         conf_lastlog_location=/var/adm/lastlog
 680         AC_DEFINE(USE_PIPES)
 681         ;;
 682 *-ncr-sysv*)
 683         LIBS="$LIBS -lc89"
 684         AC_DEFINE(USE_PIPES)
 685         AC_DEFINE(SSHD_ACQUIRES_CTTY)
 686         AC_DEFINE(SETEUID_BREAKS_SETUID)
 687         AC_DEFINE(BROKEN_SETREUID)
 688         AC_DEFINE(BROKEN_SETREGID)
 689         ;;
 690 *-sni-sysv*)
 691         # /usr/ucblib MUST NOT be searched on ReliantUNIX
 692         AC_CHECK_LIB(dl, dlsym, ,)
 693         # -lresolv needs to be at the end of LIBS or DNS lookups break
 694         AC_CHECK_LIB(resolv, res_query, [ LIBS="$LIBS -lresolv" ])
 695         IPADDR_IN_DISPLAY=yes
 696         AC_DEFINE(USE_PIPES)
 697         AC_DEFINE(IP_TOS_IS_BROKEN)
 698         AC_DEFINE(SETEUID_BREAKS_SETUID)
 699         AC_DEFINE(BROKEN_SETREUID)
 700         AC_DEFINE(BROKEN_SETREGID)
 701         AC_DEFINE(SSHD_ACQUIRES_CTTY)
 702         external_path_file=/etc/default/login
 703         # /usr/ucblib/libucb.a no longer needed on ReliantUNIX
 704         # Attention: always take care to bind libsocket and libnsl before libc,
 705         # otherwise you will find lots of "SIOCGPGRP errno 22" on syslog
 706         ;;
 707 # UnixWare 1.x, UnixWare 2.x, and others based on code from Univel.
 708 *-*-sysv4.2*)
 709         AC_DEFINE(USE_PIPES)
 710         AC_DEFINE(SETEUID_BREAKS_SETUID)
 711         AC_DEFINE(BROKEN_SETREUID)
 712         AC_DEFINE(BROKEN_SETREGID)
 713         AC_DEFINE(PASSWD_NEEDS_USERNAME, 1, [must supply username to passwd])
 714         AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
 715         ;;
 716 # UnixWare 7.x, OpenUNIX 8
 717 *-*-sysv5*)
 718         check_for_libcrypt_later=1
 719         AC_DEFINE(UNIXWARE_LONG_PASSWORDS, 1, [Support passwords > 8 chars])
 720         AC_DEFINE(USE_PIPES)
 721         AC_DEFINE(SETEUID_BREAKS_SETUID)
 722         AC_DEFINE(BROKEN_SETREUID)
 723         AC_DEFINE(BROKEN_SETREGID)
 724         AC_DEFINE(PASSWD_NEEDS_USERNAME)
 725         case "$host" in
 726         *-*-sysv5SCO_SV*)       # SCO OpenServer 6.x
 727                 TEST_SHELL=/u95/bin/sh
 728                 AC_DEFINE(BROKEN_LIBIAF, 1,
 729                         [ia_uinfo routines not supported by OS yet])
 730                 AC_DEFINE(BROKEN_UPDWTMPX)
 731                 ;;
 732         *)      AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
 733                 ;;
 734         esac
 735         ;;
 736 *-*-sysv*)
 737         ;;
 738 # SCO UNIX and OEM versions of SCO UNIX
 739 *-*-sco3.2v4*)
 740         AC_MSG_ERROR("This Platform is no longer supported.")
 741         ;;
 742 # SCO OpenServer 5.x
 743 *-*-sco3.2v5*)
 744         if test -z "$GCC"; then
 745                 CFLAGS="$CFLAGS -belf"
 746         fi
 747         LIBS="$LIBS -lprot -lx -ltinfo -lm"
 748         no_dev_ptmx=1
 749         AC_DEFINE(USE_PIPES)
 750         AC_DEFINE(HAVE_SECUREWARE)
 751         AC_DEFINE(DISABLE_SHADOW)
 752         AC_DEFINE(DISABLE_FD_PASSING)
 753         AC_DEFINE(SETEUID_BREAKS_SETUID)
 754         AC_DEFINE(BROKEN_SETREUID)
 755         AC_DEFINE(BROKEN_SETREGID)
 756         AC_DEFINE(WITH_ABBREV_NO_TTY)
 757         AC_DEFINE(BROKEN_UPDWTMPX)
 758         AC_DEFINE(PASSWD_NEEDS_USERNAME)
 759         AC_CHECK_FUNCS(getluid setluid)
 760         MANTYPE=man
 761         TEST_SHELL=ksh
 762         ;;
 763 *-*-unicosmk*)
 764         AC_DEFINE(NO_SSH_LASTLOG, 1,
 765                 [Define if you don't want to use lastlog in session.c])
 766         AC_DEFINE(SETEUID_BREAKS_SETUID)
 767         AC_DEFINE(BROKEN_SETREUID)
 768         AC_DEFINE(BROKEN_SETREGID)
 769         AC_DEFINE(USE_PIPES)
 770         AC_DEFINE(DISABLE_FD_PASSING)
 771         LDFLAGS="$LDFLAGS"
 772         LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
 773         MANTYPE=cat
 774         ;;
 775 *-*-unicosmp*)
 776         AC_DEFINE(SETEUID_BREAKS_SETUID)
 777         AC_DEFINE(BROKEN_SETREUID)
 778         AC_DEFINE(BROKEN_SETREGID)
 779         AC_DEFINE(WITH_ABBREV_NO_TTY)
 780         AC_DEFINE(USE_PIPES)
 781         AC_DEFINE(DISABLE_FD_PASSING)
 782         LDFLAGS="$LDFLAGS"
 783         LIBS="$LIBS -lgen -lacid -ldb"
 784         MANTYPE=cat
 785         ;;
 786 *-*-unicos*)
 787         AC_DEFINE(SETEUID_BREAKS_SETUID)
 788         AC_DEFINE(BROKEN_SETREUID)
 789         AC_DEFINE(BROKEN_SETREGID)
 790         AC_DEFINE(USE_PIPES)
 791         AC_DEFINE(DISABLE_FD_PASSING)
 792         AC_DEFINE(NO_SSH_LASTLOG)
 793         LDFLAGS="$LDFLAGS -Wl,-Dmsglevel=334:fatal"
 794         LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
 795         MANTYPE=cat
 796         ;;
 797 *-dec-osf*)
 798         AC_MSG_CHECKING(for Digital Unix SIA)
 799         no_osfsia=""
 800         AC_ARG_WITH(osfsia,
 801                 [  --with-osfsia           Enable Digital Unix SIA],
 802                 [
 803                         if test "x$withval" = "xno" ; then
 804                                 AC_MSG_RESULT(disabled)
 805                                 no_osfsia=1
 806                         fi
 807                 ],
 808         )
 809         if test -z "$no_osfsia" ; then
 810                 if test -f /etc/sia/matrix.conf; then
 811                         AC_MSG_RESULT(yes)
 812                         AC_DEFINE(HAVE_OSF_SIA, 1,
 813                                 [Define if you have Digital Unix Security
 814                                 Integration Architecture])
 815                         AC_DEFINE(DISABLE_LOGIN, 1,
 816                                 [Define if you don't want to use your
 817                                 system's login() call])
 818                         AC_DEFINE(DISABLE_FD_PASSING)
 819                         LIBS="$LIBS -lsecurity -ldb -lm -laud"
 820                         SIA_MSG="yes"
 821                 else
 822                         AC_MSG_RESULT(no)
 823                         AC_DEFINE(LOCKED_PASSWD_SUBSTR, "Nologin",
 824                           [String used in /etc/passwd to denote locked account])
 825                 fi
 826         fi
 827         AC_DEFINE(BROKEN_GETADDRINFO)
 828         AC_DEFINE(SETEUID_BREAKS_SETUID)
 829         AC_DEFINE(BROKEN_SETREUID)
 830         AC_DEFINE(BROKEN_SETREGID)
 831         ;;
 832
 833 *-*-nto-qnx*)
 834         AC_DEFINE(USE_PIPES)
 835         AC_DEFINE(NO_X11_UNIX_SOCKETS)
 836         AC_DEFINE(MISSING_NFDBITS, 1, [Define on *nto-qnx systems])
 837         AC_DEFINE(MISSING_HOWMANY, 1, [Define on *nto-qnx systems])
 838         AC_DEFINE(MISSING_FD_MASK, 1, [Define on *nto-qnx systems])
 839         AC_DEFINE(DISABLE_LASTLOG)
 840         AC_DEFINE(SSHD_ACQUIRES_CTTY)
 841         AC_DEFINE(BROKEN_SHADOW_EXPIRE, 1, [QNX shadow support is broken])
 842         enable_etc_default_login=no     # has incompatible /etc/default/login
 843         case "$host" in
 844         *-*-nto-qnx6*)
 845                 AC_DEFINE(DISABLE_FD_PASSING)
 846                 ;;
 847         esac
 848         ;;
 849
 850 *-*-ultrix*)
 851         AC_DEFINE(BROKEN_GETGROUPS, 1, [getgroups(0,NULL) will return -1])
 852         AC_DEFINE(BROKEN_MMAP, 1, [Ultrix mmap can't map files])
 853         AC_DEFINE(NEED_SETPGRP)
 854         AC_DEFINE(HAVE_SYS_SYSLOG_H, 1, [Force use of sys/syslog.h on Ultrix])
 855         ;;
 856
 857 *-*-lynxos)
 858         CFLAGS="$CFLAGS -D__NO_INCLUDE_WARN__"
 859         AC_DEFINE(MISSING_HOWMANY)
 860         AC_DEFINE(BROKEN_SETVBUF, 1, [LynxOS has broken setvbuf() implementation])
 861         ;;
 862 esac
 863
 864 AC_MSG_CHECKING(compiler and flags for sanity)
 865 AC_RUN_IFELSE(
 866         [AC_LANG_SOURCE([
 867 #include <stdio.h>
 868 int main(){exit(0);}
 869         ])],
 870         [       AC_MSG_RESULT(yes) ],
 871         [
 872                 AC_MSG_RESULT(no)
 873                 AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***])
 874         ],
 875         [       AC_MSG_WARN([cross compiling: not checking compiler sanity]) ]
 876 )
 877
 878 dnl Checks for header files.
 879 # Checks for libraries.
 880 AC_CHECK_FUNC(yp_match, , AC_CHECK_LIB(nsl, yp_match))
 881 AC_CHECK_FUNC(setsockopt, , AC_CHECK_LIB(socket, setsockopt))
 882
 883 dnl IRIX and Solaris 2.5.1 have dirname() in libgen
 884 AC_CHECK_FUNCS(dirname, [AC_CHECK_HEADERS(libgen.h)] ,[
 885         AC_CHECK_LIB(gen, dirname,[
 886                 AC_CACHE_CHECK([for broken dirname],
 887                         ac_cv_have_broken_dirname, [
 888                         save_LIBS="$LIBS"
 889                         LIBS="$LIBS -lgen"
 890                         AC_RUN_IFELSE(
 891                                 [AC_LANG_SOURCE([[
 892 #include <libgen.h>
 893 #include <string.h>
 894
 895 int main(int argc, char **argv) {
 896     char *s, buf[32];
 897
 898     strncpy(buf,"/etc", 32);
 899     s = dirname(buf);
 900     if (!s || strncmp(s, "/", 32) != 0) {
 901         exit(1);
 902     } else {
 903         exit(0);
 904     }
 905 }
 906                                 ]])],
 907                                 [ ac_cv_have_broken_dirname="no" ],
 908                                 [ ac_cv_have_broken_dirname="yes" ],
 909                                 [ ac_cv_have_broken_dirname="no" ],
 910                         )
 911                         LIBS="$save_LIBS"
 912                 ])
 913                 if test "x$ac_cv_have_broken_dirname" = "xno" ; then
 914                         LIBS="$LIBS -lgen"
 915                         AC_DEFINE(HAVE_DIRNAME)
 916                         AC_CHECK_HEADERS(libgen.h)
 917                 fi
 918         ])
 919 ])
 920
 921 AC_CHECK_FUNC(getspnam, ,
 922         AC_CHECK_LIB(gen, getspnam, LIBS="$LIBS -lgen"))
 923 AC_SEARCH_LIBS(basename, gen, AC_DEFINE(HAVE_BASENAME, 1,
 924         [Define if you have the basename function.]))
 925
 926 dnl zlib is required
 927 AC_ARG_WITH(zlib,
 928         [  --with-zlib=PATH        Use zlib in PATH],
 929         [ if test "x$withval" = "xno" ; then
 930                 AC_MSG_ERROR([*** zlib is required ***])
 931           elif test "x$withval" != "xyes"; then
 932                 if test -d "$withval/lib"; then
 933                         if test -n "${need_dash_r}"; then
 934                                 LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
 935                         else
 936                                 LDFLAGS="-L${withval}/lib ${LDFLAGS}"
 937                         fi
 938                 else
 939                         if test -n "${need_dash_r}"; then
 940                                 LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
 941                         else
 942                                 LDFLAGS="-L${withval} ${LDFLAGS}"
 943                         fi
 944                 fi
 945                 if test -d "$withval/include"; then
 946                         CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
 947                 else
 948                         CPPFLAGS="-I${withval} ${CPPFLAGS}"
 949                 fi
 950         fi ]
 951 )
 952
 953 AC_CHECK_LIB(z, deflate, ,
 954         [
 955                 saved_CPPFLAGS="$CPPFLAGS"
 956                 saved_LDFLAGS="$LDFLAGS"
 957                 save_LIBS="$LIBS"
 958                 dnl Check default zlib install dir
 959                 if test -n "${need_dash_r}"; then
 960                         LDFLAGS="-L/usr/local/lib -R/usr/local/lib ${saved_LDFLAGS}"
 961                 else
 962                         LDFLAGS="-L/usr/local/lib ${saved_LDFLAGS}"
 963                 fi
 964                 CPPFLAGS="-I/usr/local/include ${saved_CPPFLAGS}"
 965                 LIBS="$LIBS -lz"
 966                 AC_TRY_LINK_FUNC(deflate, AC_DEFINE(HAVE_LIBZ),
 967                         [
 968                                 AC_MSG_ERROR([*** zlib missing - please install first or check config.log ***])
 969                         ]
 970                 )
 971         ]
 972 )
 973 AC_CHECK_HEADER([zlib.h], ,AC_MSG_ERROR([*** zlib.h missing - please install first or check config.log ***]))
 974
 975 AC_ARG_WITH(zlib-version-check,
 976         [  --without-zlib-version-check Disable zlib version check],
 977         [  if test "x$withval" = "xno" ; then
 978                 zlib_check_nonfatal=1
 979            fi
 980         ]
 981 )
 982
 983 AC_MSG_CHECKING(for possibly buggy zlib)
 984 AC_RUN_IFELSE([AC_LANG_SOURCE([[
 985 #include <stdio.h>
 986 #include <zlib.h>
 987 int main()
 988 {
 989         int a=0, b=0, c=0, d=0, n, v;
 990         n = sscanf(ZLIB_VERSION, "%d.%d.%d.%d", &a, &b, &c, &d);
 991         if (n != 3 && n != 4)
 992                 exit(1);
 993         v = a*1000000 + b*10000 + c*100 + d;
 994         fprintf(stderr, "found zlib version %s (%d)\n", ZLIB_VERSION, v);
 995
 996         /* 1.1.4 is OK */
 997         if (a == 1 && b == 1 && c >= 4)
 998                 exit(0);
 999
1000         /* 1.2.3 and up are OK */
1001         if (v >= 1020300)
1002                 exit(0);
1003
1004         exit(2);
1005 }
1006         ]])],
1007         AC_MSG_RESULT(no),
1008         [ AC_MSG_RESULT(yes)
1009           if test -z "$zlib_check_nonfatal" ; then
1010                 AC_MSG_ERROR([*** zlib too old - check config.log ***
1011 Your reported zlib version has known security problems.  It's possible your
1012 vendor has fixed these problems without changing the version number.  If you
1013 are sure this is the case, you can disable the check by running
1014 "./configure --without-zlib-version-check".
1015 If you are in doubt, upgrade zlib to version 1.2.3 or greater.
1016 See http://www.gzip.org/zlib/ for details.])
1017           else
1018                 AC_MSG_WARN([zlib version may have security problems])
1019           fi
1020         ],
1021         [       AC_MSG_WARN([cross compiling: not checking zlib version]) ]
1022 )
1023
1024 dnl UnixWare 2.x
1025 AC_CHECK_FUNC(strcasecmp,
1026         [], [ AC_CHECK_LIB(resolv, strcasecmp, LIBS="$LIBS -lresolv") ]
1027 )
1028 AC_CHECK_FUNCS(utimes,
1029         [], [ AC_CHECK_LIB(c89, utimes, [AC_DEFINE(HAVE_UTIMES)
1030                                         LIBS="$LIBS -lc89"]) ]
1031 )
1032
1033 dnl    Checks for libutil functions
1034 AC_CHECK_HEADERS(libutil.h)
1035 AC_SEARCH_LIBS(login, util bsd, [AC_DEFINE(HAVE_LOGIN, 1,
1036         [Define if your libraries define login()])])
1037 AC_CHECK_FUNCS(logout updwtmp logwtmp)
1038
1039 AC_FUNC_STRFTIME
1040
1041 # Check for ALTDIRFUNC glob() extension
1042 AC_MSG_CHECKING(for GLOB_ALTDIRFUNC support)
1043 AC_EGREP_CPP(FOUNDIT,
1044         [
1045                 #include <glob.h>
1046                 #ifdef GLOB_ALTDIRFUNC
1047                 FOUNDIT
1048                 #endif
1049         ],
1050         [
1051                 AC_DEFINE(GLOB_HAS_ALTDIRFUNC, 1,
1052                         [Define if your system glob() function has
1053                         the GLOB_ALTDIRFUNC extension])
1054                 AC_MSG_RESULT(yes)
1055         ],
1056         [
1057                 AC_MSG_RESULT(no)
1058         ]
1059 )
1060
1061 # Check for g.gl_matchc glob() extension
1062 AC_MSG_CHECKING(for gl_matchc field in glob_t)
1063 AC_TRY_COMPILE(
1064         [ #include <glob.h> ],
1065         [glob_t g; g.gl_matchc = 1;],
1066         [
1067                 AC_DEFINE(GLOB_HAS_GL_MATCHC, 1,
1068                         [Define if your system glob() function has
1069                         gl_matchc options in glob_t])
1070                 AC_MSG_RESULT(yes)
1071         ],
1072         [
1073                 AC_MSG_RESULT(no)
1074         ]
1075 )
1076
1077 AC_CHECK_DECLS(GLOB_NOMATCH, , , [#include <glob.h>])
1078
1079 AC_MSG_CHECKING([whether struct dirent allocates space for d_name])
1080 AC_RUN_IFELSE(
1081         [AC_LANG_SOURCE([[
1082 #include <sys/types.h>
1083 #include <dirent.h>
1084 int main(void){struct dirent d;exit(sizeof(d.d_name)<=sizeof(char));}
1085         ]])],
1086         [AC_MSG_RESULT(yes)],
1087         [
1088                 AC_MSG_RESULT(no)
1089                 AC_DEFINE(BROKEN_ONE_BYTE_DIRENT_D_NAME, 1,
1090                         [Define if your struct dirent expects you to
1091                         allocate extra space for d_name])
1092         ],
1093         [
1094                 AC_MSG_WARN([cross compiling: assuming BROKEN_ONE_BYTE_DIRENT_D_NAME])
1095                 AC_DEFINE(BROKEN_ONE_BYTE_DIRENT_D_NAME)
1096         ]
1097 )
1098
1099 AC_MSG_CHECKING([for /proc/pid/fd directory])
1100 if test -d "/proc/$$/fd" ; then
1101         AC_DEFINE(HAVE_PROC_PID, 1, [Define if you have /proc/$pid/fd])
1102         AC_MSG_RESULT(yes)
1103 else
1104         AC_MSG_RESULT(no)
1105 fi
1106
1107 # Check whether user wants S/Key support
1108 SKEY_MSG="no"
1109 AC_ARG_WITH(skey,
1110         [  --with-skey[[=PATH]]      Enable S/Key support (optionally in PATH)],
1111         [
1112                 if test "x$withval" != "xno" ; then
1113
1114                         if test "x$withval" != "xyes" ; then
1115                                 CPPFLAGS="$CPPFLAGS -I${withval}/include"
1116                                 LDFLAGS="$LDFLAGS -L${withval}/lib"
1117                         fi
1118
1119                         AC_DEFINE(SKEY, 1, [Define if you want S/Key support])
1120                         LIBS="-lskey $LIBS"
1121                         SKEY_MSG="yes"
1122
1123                         AC_MSG_CHECKING([for s/key support])
1124                         AC_LINK_IFELSE(
1125                                 [AC_LANG_SOURCE([[
1126 #include <stdio.h>
1127 #include <skey.h>
1128 int main() { char *ff = skey_keyinfo(""); ff=""; exit(0); }
1129                                 ]])],
1130                                 [AC_MSG_RESULT(yes)],
1131                                 [
1132                                         AC_MSG_RESULT(no)
1133                                         AC_MSG_ERROR([** Incomplete or missing s/key libraries.])
1134                                 ])
1135                         AC_MSG_CHECKING(if skeychallenge takes 4 arguments)
1136                         AC_TRY_COMPILE(
1137                                 [#include <stdio.h>
1138                                  #include <skey.h>],
1139                                 [(void)skeychallenge(NULL,"name","",0);],
1140                                 [AC_MSG_RESULT(yes)
1141                                  AC_DEFINE(SKEYCHALLENGE_4ARG, 1,
1142                                         [Define if your skeychallenge()
1143                                         function takes 4 arguments (NetBSD)])],
1144                                 [AC_MSG_RESULT(no)]
1145                         )
1146                 fi
1147         ]
1148 )
1149
1150 # Check whether user wants TCP wrappers support
1151 TCPW_MSG="no"
1152 AC_ARG_WITH(tcp-wrappers,
1153         [  --with-tcp-wrappers[[=PATH]] Enable tcpwrappers support (optionally in PATH)],
1154         [
1155                 if test "x$withval" != "xno" ; then
1156                         saved_LIBS="$LIBS"
1157                         saved_LDFLAGS="$LDFLAGS"
1158                         saved_CPPFLAGS="$CPPFLAGS"
1159                         if test -n "${withval}" && \
1160                             test "x${withval}" != "xyes"; then
1161                                 if test -d "${withval}/lib"; then
1162                                         if test -n "${need_dash_r}"; then
1163                                                 LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
1164                                         else
1165                                                 LDFLAGS="-L${withval}/lib ${LDFLAGS}"
1166                                         fi
1167                                 else
1168                                         if test -n "${need_dash_r}"; then
1169                                                 LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
1170                                         else
1171                                                 LDFLAGS="-L${withval} ${LDFLAGS}"
1172                                         fi
1173                                 fi
1174                                 if test -d "${withval}/include"; then
1175                                         CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
1176                                 else
1177                                         CPPFLAGS="-I${withval} ${CPPFLAGS}"
1178                                 fi
1179                         fi
1180                         LIBS="-lwrap $LIBS"
1181                         AC_MSG_CHECKING(for libwrap)
1182                         AC_TRY_LINK(
1183                                 [
1184 #include <sys/types.h>
1185 #include <sys/socket.h>
1186 #include <netinet/in.h>
1187 #include <tcpd.h>
1188                                         int deny_severity = 0, allow_severity = 0;
1189                                 ],
1190                                 [hosts_access(0);],
1191                                 [
1192                                         AC_MSG_RESULT(yes)
1193                                         AC_DEFINE(LIBWRAP, 1,
1194                                                 [Define if you want
1195                                                 TCP Wrappers support])
1196                                         SSHDLIBS="$SSHDLIBS -lwrap"
1197                                         TCPW_MSG="yes"
1198                                 ],
1199                                 [
1200                                         AC_MSG_ERROR([*** libwrap missing])
1201                                 ]
1202                         )
1203                         LIBS="$saved_LIBS"
1204                 fi
1205         ]
1206 )
1207
1208 # Check whether user wants libedit support
1209 LIBEDIT_MSG="no"
1210 AC_ARG_WITH(libedit,
1211         [  --with-libedit[[=PATH]]   Enable libedit support for sftp],
1212         [ if test "x$withval" != "xno" ; then
1213                 if test "x$withval" != "xyes"; then
1214                         CPPFLAGS="$CPPFLAGS -I${withval}/include"
1215                         if test -n "${need_dash_r}"; then
1216                                 LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
1217                         else
1218                                 LDFLAGS="-L${withval}/lib ${LDFLAGS}"
1219                         fi
1220                 fi
1221                 AC_CHECK_LIB(edit, el_init,
1222                         [ AC_DEFINE(USE_LIBEDIT, 1, [Use libedit for sftp])
1223                           LIBEDIT="-ledit -lcurses"
1224                           LIBEDIT_MSG="yes"
1225                           AC_SUBST(LIBEDIT)
1226                         ],
1227                         [ AC_MSG_ERROR(libedit not found) ],
1228                         [ -lcurses ]
1229                 )
1230                 AC_MSG_CHECKING(if libedit version is compatible)
1231                 AC_COMPILE_IFELSE(
1232                     [AC_LANG_SOURCE([[
1233 #include <histedit.h>
1234 int main(void)
1235 {
1236         int i = H_SETSIZE;
1237         el_init("", NULL, NULL, NULL);
1238         exit(0);
1239 }
1240                     ]])],
1241                     [ AC_MSG_RESULT(yes) ],
1242                     [ AC_MSG_RESULT(no)
1243                       AC_MSG_ERROR(libedit version is not compatible) ]
1244                 )
1245         fi ]
1246 )
1247
1248 AUDIT_MODULE=none
1249 AC_ARG_WITH(audit,
1250         [  --with-audit=module     Enable EXPERIMENTAL audit support (modules=debug,bsm)],
1251         [
1252           AC_MSG_CHECKING(for supported audit module)
1253           case "$withval" in
1254           bsm)
1255                 AC_MSG_RESULT(bsm)
1256                 AUDIT_MODULE=bsm
1257                 dnl    Checks for headers, libs and functions
1258                 AC_CHECK_HEADERS(bsm/audit.h, [],
1259                     [AC_MSG_ERROR(BSM enabled and bsm/audit.h not found)],
1260                     [
1261 #ifdef HAVE_TIME_H
1262 # include <time.h>
1263 #endif
1264                     ]
1265 )
1266                 AC_CHECK_LIB(bsm, getaudit, [],
1267                     [AC_MSG_ERROR(BSM enabled and required library not found)])
1268                 AC_CHECK_FUNCS(getaudit, [],
1269                     [AC_MSG_ERROR(BSM enabled and required function not found)])
1270                 # These are optional
1271                 AC_CHECK_FUNCS(getaudit_addr aug_get_machine)
1272                 AC_DEFINE(USE_BSM_AUDIT, 1, [Use BSM audit module])
1273                 ;;
1274           debug)
1275                 AUDIT_MODULE=debug
1276                 AC_MSG_RESULT(debug)
1277                 AC_DEFINE(SSH_AUDIT_EVENTS, 1, Use audit debugging module)
1278                 ;;
1279           no)
1280                 AC_MSG_RESULT(no)
1281                 ;;
1282           *)
1283                 AC_MSG_ERROR([Unknown audit module $withval])
1284                 ;;
1285         esac ]
1286 )
1287
1288 dnl    Checks for library functions. Please keep in alphabetical order
1289 AC_CHECK_FUNCS( \
1290         arc4random \
1291         asprintf \
1292         b64_ntop \
1293         __b64_ntop \
1294         b64_pton \
1295         __b64_pton \
1296         bcopy \
1297         bindresvport_sa \
1298         clock \
1299         closefrom \
1300         dirfd \
1301         fchmod \
1302         fchown \
1303         freeaddrinfo \
1304         futimes \
1305         getaddrinfo \
1306         getcwd \
1307         getgrouplist \
1308         getnameinfo \
1309         getopt \
1310         getpeereid \
1311         getpeerucred \
1312         _getpty \
1313         getrlimit \
1314         getttyent \
1315         glob \
1316         inet_aton \
1317         inet_ntoa \
1318         inet_ntop \
1319         innetgr \
1320         login_getcapbool \
1321         md5_crypt \
1322         memmove \
1323         mkdtemp \
1324         mmap \
1325         ngetaddrinfo \
1326         nsleep \
1327         ogetaddrinfo \
1328         openlog_r \
1329         openpty \
1330         poll \
1331         prctl \
1332         pstat \
1333         readpassphrase \
1334         realpath \
1335         recvmsg \
1336         rresvport_af \
1337         sendmsg \
1338         setdtablesize \
1339         setegid \
1340         setenv \
1341         seteuid \
1342         setgroups \
1343         setlogin \
1344         setpcred \
1345         setproctitle \
1346         setregid \
1347         setreuid \
1348         setrlimit \
1349         setsid \
1350         setvbuf \
1351         sigaction \
1352         sigvec \
1353         snprintf \
1354         socketpair \
1355         strdup \
1356         strerror \
1357         strlcat \
1358         strlcpy \
1359         strmode \
1360         strnvis \
1361         strtonum \
1362         strtoll \
1363         strtoul \
1364         swap32 \
1365         sysconf \
1366         tcgetpgrp \
1367         truncate \
1368         unsetenv \
1369         updwtmpx \
1370         vasprintf \
1371         vhangup \
1372         vsnprintf \
1373         waitpid \
1374 )
1375
1376 # IRIX has a const char return value for gai_strerror()
1377 AC_CHECK_FUNCS(gai_strerror,[
1378         AC_DEFINE(HAVE_GAI_STRERROR)
1379         AC_TRY_COMPILE([
1380 #include <sys/types.h>
1381 #include <sys/socket.h>
1382 #include <netdb.h>
1383
1384 const char *gai_strerror(int);],[
1385 char *str;
1386
1387 str = gai_strerror(0);],[
1388                 AC_DEFINE(HAVE_CONST_GAI_STRERROR_PROTO, 1,
1389                 [Define if gai_strerror() returns const char *])])])
1390
1391 AC_SEARCH_LIBS(nanosleep, rt posix4, AC_DEFINE(HAVE_NANOSLEEP, 1,
1392         [Some systems put nanosleep outside of libc]))
1393
1394 dnl Make sure prototypes are defined for these before using them.
1395 AC_CHECK_DECL(getrusage, [AC_CHECK_FUNCS(getrusage)])
1396 AC_CHECK_DECL(strsep,
1397         [AC_CHECK_FUNCS(strsep)],
1398         [],
1399         [
1400 #ifdef HAVE_STRING_H
1401 # include <string.h>
1402 #endif
1403         ])
1404
1405 dnl tcsendbreak might be a macro
1406 AC_CHECK_DECL(tcsendbreak,
1407         [AC_DEFINE(HAVE_TCSENDBREAK)],
1408         [AC_CHECK_FUNCS(tcsendbreak)],
1409         [#include <termios.h>]
1410 )
1411
1412 AC_CHECK_DECLS(h_errno, , ,[#include <netdb.h>])
1413
1414 AC_CHECK_DECLS(SHUT_RD, , ,
1415         [
1416 #include <sys/types.h>
1417 #include <sys/socket.h>
1418         ])
1419
1420 AC_CHECK_DECLS(O_NONBLOCK, , ,
1421         [
1422 #include <sys/types.h>
1423 #ifdef HAVE_SYS_STAT_H
1424 # include <sys/stat.h>
1425 #endif
1426 #ifdef HAVE_FCNTL_H
1427 # include <fcntl.h>
1428 #endif
1429         ])
1430
1431 AC_CHECK_DECLS(writev, , , [
1432 #include <sys/types.h>
1433 #include <sys/uio.h>
1434 #include <unistd.h>
1435         ])
1436
1437 AC_CHECK_DECLS(MAXSYMLINKS, , , [
1438 #include <sys/param.h>
1439         ])
1440
1441 AC_CHECK_DECLS(offsetof, , , [
1442 #include <stddef.h>
1443         ])
1444
1445 AC_CHECK_FUNCS(setresuid, [
1446         dnl Some platorms have setresuid that isn't implemented, test for this
1447         AC_MSG_CHECKING(if setresuid seems to work)
1448         AC_RUN_IFELSE(
1449                 [AC_LANG_SOURCE([[
1450 #include <stdlib.h>
1451 #include <errno.h>
1452 int main(){errno=0; setresuid(0,0,0); if (errno==ENOSYS) exit(1); else exit(0);}
1453                 ]])],
1454                 [AC_MSG_RESULT(yes)],
1455                 [AC_DEFINE(BROKEN_SETRESUID, 1,
1456                         [Define if your setresuid() is broken])
1457                  AC_MSG_RESULT(not implemented)],
1458                 [AC_MSG_WARN([cross compiling: not checking setresuid])]
1459         )
1460 ])
1461
1462 AC_CHECK_FUNCS(setresgid, [
1463         dnl Some platorms have setresgid that isn't implemented, test for this
1464         AC_MSG_CHECKING(if setresgid seems to work)
1465         AC_RUN_IFELSE(
1466                 [AC_LANG_SOURCE([[
1467 #include <stdlib.h>
1468 #include <errno.h>
1469 int main(){errno=0; setresgid(0,0,0); if (errno==ENOSYS) exit(1); else exit(0);}
1470                 ]])],
1471                 [AC_MSG_RESULT(yes)],
1472                 [AC_DEFINE(BROKEN_SETRESGID, 1,
1473                         [Define if your setresgid() is broken])
1474                  AC_MSG_RESULT(not implemented)],
1475                 [AC_MSG_WARN([cross compiling: not checking setresuid])]
1476         )
1477 ])
1478
1479 dnl    Checks for time functions
1480 AC_CHECK_FUNCS(gettimeofday time)
1481 dnl    Checks for utmp functions
1482 AC_CHECK_FUNCS(endutent getutent getutid getutline pututline setutent)
1483 AC_CHECK_FUNCS(utmpname)
1484 dnl    Checks for utmpx functions
1485 AC_CHECK_FUNCS(endutxent getutxent getutxid getutxline pututxline )
1486 AC_CHECK_FUNCS(setutxent utmpxname)
1487
1488 AC_CHECK_FUNC(daemon,
1489         [AC_DEFINE(HAVE_DAEMON, 1, [Define if your libraries define daemon()])],
1490         [AC_CHECK_LIB(bsd, daemon,
1491                 [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_DAEMON)])]
1492 )
1493
1494 AC_CHECK_FUNC(getpagesize,
1495         [AC_DEFINE(HAVE_GETPAGESIZE, 1,
1496                 [Define if your libraries define getpagesize()])],
1497         [AC_CHECK_LIB(ucb, getpagesize,
1498                 [LIBS="$LIBS -lucb"; AC_DEFINE(HAVE_GETPAGESIZE)])]
1499 )
1500
1501 # Check for broken snprintf
1502 if test "x$ac_cv_func_snprintf" = "xyes" ; then
1503         AC_MSG_CHECKING([whether snprintf correctly terminates long strings])
1504         AC_RUN_IFELSE(
1505                 [AC_LANG_SOURCE([[
1506 #include <stdio.h>
1507 int main(void){char b[5];snprintf(b,5,"123456789");exit(b[4]!='\0');}
1508                 ]])],
1509                 [AC_MSG_RESULT(yes)],
1510                 [
1511                         AC_MSG_RESULT(no)
1512                         AC_DEFINE(BROKEN_SNPRINTF, 1,
1513                                 [Define if your snprintf is busted])
1514                         AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor])
1515                 ],
1516                 [ AC_MSG_WARN([cross compiling: Assuming working snprintf()]) ]
1517         )
1518 fi
1519
1520 # If we don't have a working asprintf, then we strongly depend on vsnprintf
1521 # returning the right thing on overflow: the number of characters it tried to
1522 # create (as per SUSv3)
1523 if test "x$ac_cv_func_asprintf" != "xyes" && \
1524    test "x$ac_cv_func_vsnprintf" = "xyes" ; then
1525         AC_MSG_CHECKING([whether vsnprintf returns correct values on overflow])
1526         AC_RUN_IFELSE(
1527                 [AC_LANG_SOURCE([[
1528 #include <sys/types.h>
1529 #include <stdio.h>
1530 #include <stdarg.h>
1531
1532 int x_snprintf(char *str,size_t count,const char *fmt,...)
1533 {
1534         size_t ret; va_list ap;
1535         va_start(ap, fmt); ret = vsnprintf(str, count, fmt, ap); va_end(ap);
1536         return ret;
1537 }
1538 int main(void)
1539 {
1540         char x[1];
1541         exit(x_snprintf(x, 1, "%s %d", "hello", 12345) == 11 ? 0 : 1);
1542 } ]])],
1543                 [AC_MSG_RESULT(yes)],
1544                 [
1545                         AC_MSG_RESULT(no)
1546                         AC_DEFINE(BROKEN_SNPRINTF, 1,
1547                                 [Define if your snprintf is busted])
1548                         AC_MSG_WARN([****** Your vsnprintf() function is broken, complain to your vendor])
1549                 ],
1550                 [ AC_MSG_WARN([cross compiling: Assuming working vsnprintf()]) ]
1551         )
1552 fi
1553
1554 # On systems where [v]snprintf is broken, but is declared in stdio,
1555 # check that the fmt argument is const char * or just char *.
1556 # This is only useful for when BROKEN_SNPRINTF
1557 AC_MSG_CHECKING([whether snprintf can declare const char *fmt])
1558 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
1559            int snprintf(char *a, size_t b, const char *c, ...) { return 0; }
1560            int main(void) { snprintf(0, 0, 0); }
1561     ]])],
1562    [AC_MSG_RESULT(yes)
1563     AC_DEFINE(SNPRINTF_CONST, [const],
1564               [Define as const if snprintf() can declare const char *fmt])],
1565    [AC_MSG_RESULT(no)
1566     AC_DEFINE(SNPRINTF_CONST, [/* not const */])])
1567
1568 # Check for missing getpeereid (or equiv) support
1569 NO_PEERCHECK=""
1570 if test "x$ac_cv_func_getpeereid" != "xyes" -a "x$ac_cv_func_getpeerucred" != "xyes"; then
1571         AC_MSG_CHECKING([whether system supports SO_PEERCRED getsockopt])
1572         AC_TRY_COMPILE(
1573                 [#include <sys/types.h>
1574                  #include <sys/socket.h>],
1575                 [int i = SO_PEERCRED;],
1576                 [ AC_MSG_RESULT(yes)
1577                   AC_DEFINE(HAVE_SO_PEERCRED, 1, [Have PEERCRED socket option])
1578                 ],
1579                 [AC_MSG_RESULT(no)
1580                 NO_PEERCHECK=1]
1581         )
1582 fi
1583
1584 dnl see whether mkstemp() requires XXXXXX
1585 if test "x$ac_cv_func_mkdtemp" = "xyes" ; then
1586 AC_MSG_CHECKING([for (overly) strict mkstemp])
1587 AC_RUN_IFELSE(
1588         [AC_LANG_SOURCE([[
1589 #include <stdlib.h>
1590 main() { char template[]="conftest.mkstemp-test";
1591 if (mkstemp(template) == -1)
1592         exit(1);
1593 unlink(template); exit(0);
1594 }
1595         ]])],
1596         [
1597                 AC_MSG_RESULT(no)
1598         ],
1599         [
1600                 AC_MSG_RESULT(yes)
1601                 AC_DEFINE(HAVE_STRICT_MKSTEMP, 1, [Silly mkstemp()])
1602         ],
1603         [
1604                 AC_MSG_RESULT(yes)
1605                 AC_DEFINE(HAVE_STRICT_MKSTEMP)
1606         ]
1607 )
1608 fi
1609
1610 dnl make sure that openpty does not reacquire controlling terminal
1611 if test ! -z "$check_for_openpty_ctty_bug"; then
1612         AC_MSG_CHECKING(if openpty correctly handles controlling tty)
1613         AC_RUN_IFELSE(
1614                 [AC_LANG_SOURCE([[
1615 #include <stdio.h>
1616 #include <sys/fcntl.h>
1617 #include <sys/types.h>
1618 #include <sys/wait.h>
1619
1620 int
1621 main()
1622 {
1623         pid_t pid;
1624         int fd, ptyfd, ttyfd, status;
1625
1626         pid = fork();
1627         if (pid < 0) {          /* failed */
1628                 exit(1);
1629         } else if (pid > 0) {   /* parent */
1630                 waitpid(pid, &status, 0);
1631                 if (WIFEXITED(status))
1632                         exit(WEXITSTATUS(status));
1633                 else
1634                         exit(2);
1635         } else {                /* child */
1636                 close(0); close(1); close(2);
1637                 setsid();
1638                 openpty(&ptyfd, &ttyfd, NULL, NULL, NULL);
1639                 fd = open("/dev/tty", O_RDWR | O_NOCTTY);
1640                 if (fd >= 0)
1641                         exit(3);        /* Acquired ctty: broken */
1642                 else
1643                         exit(0);        /* Did not acquire ctty: OK */
1644         }
1645 }
1646                 ]])],
1647                 [
1648                         AC_MSG_RESULT(yes)
1649                 ],
1650                 [
1651                         AC_MSG_RESULT(no)
1652                         AC_DEFINE(SSHD_ACQUIRES_CTTY)
1653                 ],
1654                 [
1655                         AC_MSG_RESULT(cross-compiling, assuming yes)
1656                 ]
1657         )
1658 fi
1659
1660 if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
1661     test "x$check_for_hpux_broken_getaddrinfo" = "x1"; then
1662         AC_MSG_CHECKING(if getaddrinfo seems to work)
1663         AC_RUN_IFELSE(
1664                 [AC_LANG_SOURCE([[
1665 #include <stdio.h>
1666 #include <sys/socket.h>
1667 #include <netdb.h>
1668 #include <errno.h>
1669 #include <netinet/in.h>
1670
1671 #define TEST_PORT "2222"
1672
1673 int
1674 main(void)
1675 {
1676         int err, sock;
1677         struct addrinfo *gai_ai, *ai, hints;
1678         char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;
1679
1680         memset(&hints, 0, sizeof(hints));
1681         hints.ai_family = PF_UNSPEC;
1682         hints.ai_socktype = SOCK_STREAM;
1683         hints.ai_flags = AI_PASSIVE;
1684
1685         err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
1686         if (err != 0) {
1687                 fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
1688                 exit(1);
1689         }
1690
1691         for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
1692                 if (ai->ai_family != AF_INET6)
1693                         continue;
1694
1695                 err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
1696                     sizeof(ntop), strport, sizeof(strport),
1697                     NI_NUMERICHOST|NI_NUMERICSERV);
1698
1699                 if (err != 0) {
1700                         if (err == EAI_SYSTEM)
1701                                 perror("getnameinfo EAI_SYSTEM");
1702                         else
1703                                 fprintf(stderr, "getnameinfo failed: %s\n",
1704                                     gai_strerror(err));
1705                         exit(2);
1706                 }
1707
1708                 sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
1709                 if (sock < 0)
1710                         perror("socket");
1711                 if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
1712                         if (errno == EBADF)
1713                                 exit(3);
1714                 }
1715         }
1716         exit(0);
1717 }
1718                 ]])],
1719                 [
1720                         AC_MSG_RESULT(yes)
1721                 ],
1722                 [
1723                         AC_MSG_RESULT(no)
1724                         AC_DEFINE(BROKEN_GETADDRINFO)
1725                 ],
1726                 [
1727                         AC_MSG_RESULT(cross-compiling, assuming yes)
1728                 ]
1729         )
1730 fi
1731
1732 if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
1733     test "x$check_for_aix_broken_getaddrinfo" = "x1"; then
1734         AC_MSG_CHECKING(if getaddrinfo seems to work)
1735         AC_RUN_IFELSE(
1736                 [AC_LANG_SOURCE([[
1737 #include <stdio.h>
1738 #include <sys/socket.h>
1739 #include <netdb.h>
1740 #include <errno.h>
1741 #include <netinet/in.h>
1742
1743 #define TEST_PORT "2222"
1744
1745 int
1746 main(void)
1747 {
1748         int err, sock;
1749         struct addrinfo *gai_ai, *ai, hints;
1750         char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;
1751
1752         memset(&hints, 0, sizeof(hints));
1753         hints.ai_family = PF_UNSPEC;
1754         hints.ai_socktype = SOCK_STREAM;
1755         hints.ai_flags = AI_PASSIVE;
1756
1757         err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
1758         if (err != 0) {
1759                 fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
1760                 exit(1);
1761         }
1762
1763         for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
1764                 if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
1765                         continue;
1766
1767                 err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
1768                     sizeof(ntop), strport, sizeof(strport),
1769                     NI_NUMERICHOST|NI_NUMERICSERV);
1770
1771                 if (ai->ai_family == AF_INET && err != 0) {
1772                         perror("getnameinfo");
1773                         exit(2);
1774                 }
1775         }
1776         exit(0);
1777 }
1778                 ]])],
1779                 [
1780                         AC_MSG_RESULT(yes)
1781                         AC_DEFINE(AIX_GETNAMEINFO_HACK, 1,
1782                                 [Define if you have a getaddrinfo that fails
1783                                 for the all-zeros IPv6 address])
1784                 ],
1785                 [
1786                         AC_MSG_RESULT(no)
1787                         AC_DEFINE(BROKEN_GETADDRINFO)
1788                 ],
1789                 [
1790                         AC_MSG_RESULT(cross-compiling, assuming no)
1791                 ]
1792         )
1793 fi
1794
1795 if test "x$check_for_conflicting_getspnam" = "x1"; then
1796         AC_MSG_CHECKING(for conflicting getspnam in shadow.h)
1797         AC_COMPILE_IFELSE(
1798                 [
1799 #include <shadow.h>
1800 int main(void) {exit(0);}
1801                 ],
1802                 [
1803                         AC_MSG_RESULT(no)
1804                 ],
1805                 [
1806                         AC_MSG_RESULT(yes)
1807                         AC_DEFINE(GETSPNAM_CONFLICTING_DEFS, 1,
1808                             [Conflicting defs for getspnam])
1809                 ]
1810         )
1811 fi
1812
1813 AC_FUNC_GETPGRP
1814
1815 # Search for OpenSSL
1816 saved_CPPFLAGS="$CPPFLAGS"
1817 saved_LDFLAGS="$LDFLAGS"
1818 AC_ARG_WITH(ssl-dir,
1819         [  --with-ssl-dir=PATH     Specify path to OpenSSL installation ],
1820         [
1821                 if test "x$withval" != "xno" ; then
1822                         case "$withval" in
1823                                 # Relative paths
1824                                 ./*|../*)       withval="`pwd`/$withval"
1825                         esac
1826                         if test -d "$withval/lib"; then
1827                                 if test -n "${need_dash_r}"; then
1828                                         LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
1829                                 else
1830                                         LDFLAGS="-L${withval}/lib ${LDFLAGS}"
1831                                 fi
1832                         else
1833                                 if test -n "${need_dash_r}"; then
1834                                         LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
1835                                 else
1836                                         LDFLAGS="-L${withval} ${LDFLAGS}"
1837                                 fi
1838                         fi
1839                         if test -d "$withval/include"; then
1840                                 CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
1841                         else
1842                                 CPPFLAGS="-I${withval} ${CPPFLAGS}"
1843                         fi
1844                 fi
1845         ]
1846 )
1847 LIBS="-lcrypto $LIBS"
1848 AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL, 1,
1849         [Define if your ssl headers are included
1850         with #include <openssl/header.h>]),
1851         [
1852                 dnl Check default openssl install dir
1853                 if test -n "${need_dash_r}"; then
1854                         LDFLAGS="-L/usr/local/ssl/lib -R/usr/local/ssl/lib ${saved_LDFLAGS}"
1855                 else
1856                         LDFLAGS="-L/usr/local/ssl/lib ${saved_LDFLAGS}"
1857                 fi
1858                 CPPFLAGS="-I/usr/local/ssl/include ${saved_CPPFLAGS}"
1859                 AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL),
1860                         [
1861                                 AC_MSG_ERROR([*** Can't find recent OpenSSL libcrypto (see config.log for details) ***])
1862                         ]
1863                 )
1864         ]
1865 )
1866
1867 # Determine OpenSSL header version
1868 AC_MSG_CHECKING([OpenSSL header version])
1869 AC_RUN_IFELSE(
1870         [AC_LANG_SOURCE([[
1871 #include <stdio.h>
1872 #include <string.h>
1873 #include <openssl/opensslv.h>
1874 #define DATA "conftest.sslincver"
1875 int main(void) {
1876         FILE *fd;
1877         int rc;
1878
1879         fd = fopen(DATA,"w");
1880         if(fd == NULL)
1881                 exit(1);
1882
1883         if ((rc = fprintf(fd ,"%x (%s)\n", OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_TEXT)) <0)
1884                 exit(1);
1885
1886         exit(0);
1887 }
1888         ]])],
1889         [
1890                 ssl_header_ver=`cat conftest.sslincver`
1891                 AC_MSG_RESULT($ssl_header_ver)
1892         ],
1893         [
1894                 AC_MSG_RESULT(not found)
1895                 AC_MSG_ERROR(OpenSSL version header not found.)
1896         ],
1897         [
1898                 AC_MSG_WARN([cross compiling: not checking])
1899         ]
1900 )
1901
1902 # Determine OpenSSL library version
1903 AC_MSG_CHECKING([OpenSSL library version])
1904 AC_RUN_IFELSE(
1905         [AC_LANG_SOURCE([[
1906 #include <stdio.h>
1907 #include <string.h>
1908 #include <openssl/opensslv.h>
1909 #include <openssl/crypto.h>
1910 #define DATA "conftest.ssllibver"
1911 int main(void) {
1912         FILE *fd;
1913         int rc;
1914
1915         fd = fopen(DATA,"w");
1916         if(fd == NULL)
1917                 exit(1);
1918
1919         if ((rc = fprintf(fd ,"%x (%s)\n", SSLeay(), SSLeay_version(SSLEAY_VERSION))) <0)
1920                 exit(1);
1921
1922         exit(0);
1923 }
1924         ]])],
1925         [
1926                 ssl_library_ver=`cat conftest.ssllibver`
1927                 AC_MSG_RESULT($ssl_library_ver)
1928         ],
1929         [
1930                 AC_MSG_RESULT(not found)
1931                 AC_MSG_ERROR(OpenSSL library not found.)
1932         ],
1933         [
1934                 AC_MSG_WARN([cross compiling: not checking])
1935         ]
1936 )
1937
1938 AC_ARG_WITH(openssl-header-check,
1939         [  --without-openssl-header-check Disable OpenSSL version consistency check],
1940         [  if test "x$withval" = "xno" ; then
1941                 openssl_check_nonfatal=1
1942            fi
1943         ]
1944 )
1945
1946 # Sanity check OpenSSL headers
1947 AC_MSG_CHECKING([whether OpenSSL's headers match the library])
1948 AC_RUN_IFELSE(
1949         [AC_LANG_SOURCE([[
1950 #include <string.h>
1951 #include <openssl/opensslv.h>
1952 int main(void) { exit(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1); }
1953         ]])],
1954         [
1955                 AC_MSG_RESULT(yes)
1956         ],
1957         [
1958                 AC_MSG_RESULT(no)
1959                 if test "x$openssl_check_nonfatal" = "x"; then
1960                         AC_MSG_ERROR([Your OpenSSL headers do not match your
1961 library. Check config.log for details.
1962 If you are sure your installation is consistent, you can disable the check
1963 by running "./configure --without-openssl-header-check".
1964 Also see contrib/findssl.sh for help identifying header/library mismatches.
1965 ])
1966                 else
1967                         AC_MSG_WARN([Your OpenSSL headers do not match your
1968 library. Check config.log for details.
1969 Also see contrib/findssl.sh for help identifying header/library mismatches.])
1970                 fi
1971         ],
1972         [
1973                 AC_MSG_WARN([cross compiling: not checking])
1974         ]
1975 )
1976
1977 AC_MSG_CHECKING([if programs using OpenSSL functions will link])
1978 AC_LINK_IFELSE(
1979         [AC_LANG_SOURCE([[
1980 #include <openssl/evp.h>
1981 int main(void) { SSLeay_add_all_algorithms(); }
1982         ]])],
1983         [
1984                 AC_MSG_RESULT(yes)
1985         ],
1986         [
1987                 AC_MSG_RESULT(no)
1988                 saved_LIBS="$LIBS"
1989                 LIBS="$LIBS -ldl"
1990                 AC_MSG_CHECKING([if programs using OpenSSL need -ldl])
1991                 AC_LINK_IFELSE(
1992                         [AC_LANG_SOURCE([[
1993 #include <openssl/evp.h>
1994 int main(void) { SSLeay_add_all_algorithms(); }
1995                         ]])],
1996                         [
1997                                 AC_MSG_RESULT(yes)
1998                         ],
1999                         [
2000                                 AC_MSG_RESULT(no)
2001                                 LIBS="$saved_LIBS"
2002                         ]
2003                 )
2004         ]
2005 )
2006
2007 AC_ARG_WITH(ssl-engine,
2008         [  --with-ssl-engine       Enable OpenSSL (hardware) ENGINE support ],
2009         [ if test "x$withval" != "xno" ; then
2010                 AC_MSG_CHECKING(for OpenSSL ENGINE support)
2011                 AC_TRY_COMPILE(
2012                         [ #include <openssl/engine.h>],
2013                         [
2014 ENGINE_load_builtin_engines();ENGINE_register_all_complete();
2015                         ],
2016                         [ AC_MSG_RESULT(yes)
2017                           AC_DEFINE(USE_OPENSSL_ENGINE, 1,
2018                              [Enable OpenSSL engine support])
2019                         ],
2020                         [ AC_MSG_ERROR(OpenSSL ENGINE support not found)]
2021                 )
2022           fi ]
2023 )
2024
2025 # Check for OpenSSL without EVP_aes_{192,256}_cbc
2026 AC_MSG_CHECKING([whether OpenSSL has crippled AES support])
2027 AC_LINK_IFELSE(
2028         [AC_LANG_SOURCE([[
2029 #include <string.h>
2030 #include <openssl/evp.h>
2031 int main(void) { exit(EVP_aes_192_cbc() == NULL || EVP_aes_256_cbc() == NULL);}
2032         ]])],
2033         [
2034                 AC_MSG_RESULT(no)
2035         ],
2036         [
2037                 AC_MSG_RESULT(yes)
2038                 AC_DEFINE(OPENSSL_LOBOTOMISED_AES, 1,
2039                     [libcrypto is missing AES 192 and 256 bit functions])
2040         ]
2041 )
2042
2043 # Some systems want crypt() from libcrypt, *not* the version in OpenSSL,
2044 # because the system crypt() is more featureful.
2045 if test "x$check_for_libcrypt_before" = "x1"; then
2046         AC_CHECK_LIB(crypt, crypt)
2047 fi
2048
2049 # Some Linux systems (Slackware) need crypt() from libcrypt, *not* the
2050 # version in OpenSSL.
2051 if test "x$check_for_libcrypt_later" = "x1"; then
2052         AC_CHECK_LIB(crypt, crypt, LIBS="$LIBS -lcrypt")
2053 fi
2054
2055 # Search for SHA256 support in libc and/or OpenSSL
2056 AC_CHECK_FUNCS(SHA256_Update EVP_sha256)
2057
2058 saved_LIBS="$LIBS"
2059 AC_CHECK_LIB(iaf, ia_openinfo, [
2060         LIBS="$LIBS -liaf"
2061         AC_CHECK_FUNCS(set_id, [SSHDLIBS="$SSHDLIBS -liaf"
2062                                 AC_DEFINE(HAVE_LIBIAF, 1,
2063                         [Define if system has libiaf that supports set_id])
2064                                 ])
2065 ])
2066 LIBS="$saved_LIBS"
2067
2068 ### Configure cryptographic random number support
2069
2070 # Check wheter OpenSSL seeds itself
2071 AC_MSG_CHECKING([whether OpenSSL's PRNG is internally seeded])
2072 AC_RUN_IFELSE(
2073         [AC_LANG_SOURCE([[
2074 #include <string.h>
2075 #include <openssl/rand.h>
2076 int main(void) { exit(RAND_status() == 1 ? 0 : 1); }
2077         ]])],
2078         [
2079                 OPENSSL_SEEDS_ITSELF=yes
2080                 AC_MSG_RESULT(yes)
2081         ],
2082         [
2083                 AC_MSG_RESULT(no)
2084                 # Default to use of the rand helper if OpenSSL doesn't
2085                 # seed itself
2086                 USE_RAND_HELPER=yes
2087         ],
2088         [
2089                 AC_MSG_WARN([cross compiling: assuming yes])
2090                 # This is safe, since all recent OpenSSL versions will
2091                 # complain at runtime if not seeded correctly.
2092                 OPENSSL_SEEDS_ITSELF=yes
2093         ]
2094 )
2095
2096 # Check for PAM libs
2097 PAM_MSG="no"
2098 AC_ARG_WITH(pam,
2099         [  --with-pam              Enable PAM support ],
2100         [
2101                 if test "x$withval" != "xno" ; then
2102                         if test "x$ac_cv_header_security_pam_appl_h" != "xyes" && \
2103                            test "x$ac_cv_header_pam_pam_appl_h" != "xyes" ; then
2104                                 AC_MSG_ERROR([PAM headers not found])
2105                         fi
2106
2107                         saved_LIBS="$LIBS"
2108                         AC_CHECK_LIB(dl, dlopen, , )
2109                         AC_CHECK_LIB(pam, pam_set_item, , AC_MSG_ERROR([*** libpam missing]))
2110                         AC_CHECK_FUNCS(pam_getenvlist)
2111                         AC_CHECK_FUNCS(pam_putenv)
2112                         LIBS="$saved_LIBS"
2113
2114                         PAM_MSG="yes"
2115
2116                         SSHDLIBS="$SSHDLIBS -lpam"
2117                         AC_DEFINE(USE_PAM, 1,
2118                                 [Define if you want to enable PAM support])
2119
2120                         if test $ac_cv_lib_dl_dlopen = yes; then
2121                                 case "$LIBS" in
2122                                 *-ldl*)
2123                                         # libdl already in LIBS
2124                                         ;;
2125                                 *)
2126                                         SSHDLIBS="$SSHDLIBS -ldl"
2127                                         ;;
2128                                 esac
2129                         fi
2130                 fi
2131         ]
2132 )
2133
2134 # Check for older PAM
2135 if test "x$PAM_MSG" = "xyes" ; then
2136         # Check PAM strerror arguments (old PAM)
2137         AC_MSG_CHECKING([whether pam_strerror takes only one argument])
2138         AC_TRY_COMPILE(
2139                 [
2140 #include <stdlib.h>
2141 #if defined(HAVE_SECURITY_PAM_APPL_H)
2142 #include <security/pam_appl.h>
2143 #elif defined (HAVE_PAM_PAM_APPL_H)
2144 #include <pam/pam_appl.h>
2145 #endif
2146                 ],
2147                 [(void)pam_strerror((pam_handle_t *)NULL, -1);],
2148                 [AC_MSG_RESULT(no)],
2149                 [
2150                         AC_DEFINE(HAVE_OLD_PAM, 1,
2151                                 [Define if you have an old version of PAM
2152                                 which takes only one argument to pam_strerror])
2153                         AC_MSG_RESULT(yes)
2154                         PAM_MSG="yes (old library)"
2155                 ]
2156         )
2157 fi
2158
2159 # Do we want to force the use of the rand helper?
2160 AC_ARG_WITH(rand-helper,
2161         [  --with-rand-helper      Use subprocess to gather strong randomness ],
2162         [
2163                 if test "x$withval" = "xno" ; then
2164                         # Force use of OpenSSL's internal RNG, even if
2165                         # the previous test showed it to be unseeded.
2166                         if test -z "$OPENSSL_SEEDS_ITSELF" ; then
2167                                 AC_MSG_WARN([*** Forcing use of OpenSSL's non-self-seeding PRNG])
2168                                 OPENSSL_SEEDS_ITSELF=yes
2169                                 USE_RAND_HELPER=""
2170                         fi
2171                 else
2172                         USE_RAND_HELPER=yes
2173                 fi
2174         ],
2175 )
2176
2177 # Which randomness source do we use?
2178 if test ! -z "$OPENSSL_SEEDS_ITSELF" && test -z "$USE_RAND_HELPER" ; then
2179         # OpenSSL only
2180         AC_DEFINE(OPENSSL_PRNG_ONLY, 1,
2181                 [Define if you want OpenSSL's internally seeded PRNG only])
2182         RAND_MSG="OpenSSL internal ONLY"
2183         INSTALL_SSH_RAND_HELPER=""
2184 elif test ! -z "$USE_RAND_HELPER" ; then
2185         # install rand helper
2186         RAND_MSG="ssh-rand-helper"
2187         INSTALL_SSH_RAND_HELPER="yes"
2188 fi
2189 AC_SUBST(INSTALL_SSH_RAND_HELPER)
2190
2191 ### Configuration of ssh-rand-helper
2192
2193 # PRNGD TCP socket
2194 AC_ARG_WITH(prngd-port,
2195         [  --with-prngd-port=PORT  read entropy from PRNGD/EGD TCP localhost:PORT],
2196         [
2197                 case "$withval" in
2198                 no)
2199                         withval=""
2200                         ;;
2201                 [[0-9]]*)
2202                         ;;
2203                 *)
2204                         AC_MSG_ERROR(You must specify a numeric port number for --with-prngd-port)
2205                         ;;
2206                 esac
2207                 if test ! -z "$withval" ; then
2208                         PRNGD_PORT="$withval"
2209                         AC_DEFINE_UNQUOTED(PRNGD_PORT, $PRNGD_PORT,
2210                                 [Port number of PRNGD/EGD random number socket])
2211                 fi
2212         ]
2213 )
2214
2215 # PRNGD Unix domain socket
2216 AC_ARG_WITH(prngd-socket,
2217         [  --with-prngd-socket=FILE read entropy from PRNGD/EGD socket FILE (default=/var/run/egd-pool)],
2218         [
2219                 case "$withval" in
2220                 yes)
2221                         withval="/var/run/egd-pool"
2222                         ;;
2223                 no)
2224                         withval=""
2225                         ;;
2226                 /*)
2227                         ;;
2228                 *)
2229                         AC_MSG_ERROR(You must specify an absolute path to the entropy socket)
2230                         ;;
2231                 esac
2232
2233                 if test ! -z "$withval" ; then
2234                         if test ! -z "$PRNGD_PORT" ; then
2235                                 AC_MSG_ERROR(You may not specify both a PRNGD/EGD port and socket)
2236                         fi
2237                         if test ! -r "$withval" ; then
2238                                 AC_MSG_WARN(Entropy socket is not readable)
2239                         fi
2240                         PRNGD_SOCKET="$withval"
2241                         AC_DEFINE_UNQUOTED(PRNGD_SOCKET, "$PRNGD_SOCKET",
2242                                 [Location of PRNGD/EGD random number socket])
2243                 fi
2244         ],
2245         [
2246                 # Check for existing socket only if we don't have a random device already
2247                 if test "$USE_RAND_HELPER" = yes ; then
2248                         AC_MSG_CHECKING(for PRNGD/EGD socket)
2249                         # Insert other locations here
2250                         for sock in /var/run/egd-pool /dev/egd-pool /etc/entropy; do
2251                                 if test -r $sock && $TEST_MINUS_S_SH -c "test -S $sock -o -p $sock" ; then
2252                                         PRNGD_SOCKET="$sock"
2253                                         AC_DEFINE_UNQUOTED(PRNGD_SOCKET, "$PRNGD_SOCKET")
2254                                         break;
2255                                 fi
2256                         done
2257                         if test ! -z "$PRNGD_SOCKET" ; then
2258                                 AC_MSG_RESULT($PRNGD_SOCKET)
2259                         else
2260                                 AC_MSG_RESULT(not found)
2261                         fi
2262                 fi
2263         ]
2264 )
2265
2266 # Change default command timeout for hashing entropy source
2267 entropy_timeout=200
2268 AC_ARG_WITH(entropy-timeout,
2269         [  --with-entropy-timeout  Specify entropy gathering command timeout (msec)],
2270         [
2271                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
2272                     test "x${withval}" != "xyes"; then
2273                         entropy_timeout=$withval
2274                 fi
2275         ]
2276 )
2277 AC_DEFINE_UNQUOTED(ENTROPY_TIMEOUT_MSEC, $entropy_timeout,
2278         [Builtin PRNG command timeout])
2279
2280 SSH_PRIVSEP_USER=sshd
2281 AC_ARG_WITH(privsep-user,
2282         [  --with-privsep-user=user Specify non-privileged user for privilege separation],
2283         [
2284                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
2285                     test "x${withval}" != "xyes"; then
2286                         SSH_PRIVSEP_USER=$withval
2287                 fi
2288         ]
2289 )
2290 AC_DEFINE_UNQUOTED(SSH_PRIVSEP_USER, "$SSH_PRIVSEP_USER",
2291         [non-privileged user for privilege separation])
2292 AC_SUBST(SSH_PRIVSEP_USER)
2293
2294 # We do this little dance with the search path to insure
2295 # that programs that we select for use by installed programs
2296 # (which may be run by the super-user) come from trusted
2297 # locations before they come from the user's private area.
2298 # This should help avoid accidentally configuring some
2299 # random version of a program in someone's personal bin.
2300
2301 OPATH=$PATH
2302 PATH=/bin:/usr/bin
2303 test -h /bin 2> /dev/null && PATH=/usr/bin
2304 test -d /sbin && PATH=$PATH:/sbin
2305 test -d /usr/sbin && PATH=$PATH:/usr/sbin
2306 PATH=$PATH:/etc:$OPATH
2307
2308 # These programs are used by the command hashing source to gather entropy
2309 OSSH_PATH_ENTROPY_PROG(PROG_LS, ls)
2310 OSSH_PATH_ENTROPY_PROG(PROG_NETSTAT, netstat)
2311 OSSH_PATH_ENTROPY_PROG(PROG_ARP, arp)
2312 OSSH_PATH_ENTROPY_PROG(PROG_IFCONFIG, ifconfig)
2313 OSSH_PATH_ENTROPY_PROG(PROG_JSTAT, jstat)
2314 OSSH_PATH_ENTROPY_PROG(PROG_PS, ps)
2315 OSSH_PATH_ENTROPY_PROG(PROG_SAR, sar)
2316 OSSH_PATH_ENTROPY_PROG(PROG_W, w)
2317 OSSH_PATH_ENTROPY_PROG(PROG_WHO, who)
2318 OSSH_PATH_ENTROPY_PROG(PROG_LAST, last)
2319 OSSH_PATH_ENTROPY_PROG(PROG_LASTLOG, lastlog)
2320 OSSH_PATH_ENTROPY_PROG(PROG_DF, df)
2321 OSSH_PATH_ENTROPY_PROG(PROG_VMSTAT, vmstat)
2322 OSSH_PATH_ENTROPY_PROG(PROG_UPTIME, uptime)
2323 OSSH_PATH_ENTROPY_PROG(PROG_IPCS, ipcs)
2324 OSSH_PATH_ENTROPY_PROG(PROG_TAIL, tail)
2325 # restore PATH
2326 PATH=$OPATH
2327
2328 # Where does ssh-rand-helper get its randomness from?
2329 INSTALL_SSH_PRNG_CMDS=""
2330 if test ! -z "$INSTALL_SSH_RAND_HELPER" ; then
2331         if test ! -z "$PRNGD_PORT" ; then
2332                 RAND_HELPER_MSG="TCP localhost:$PRNGD_PORT"
2333         elif test ! -z "$PRNGD_SOCKET" ; then
2334                 RAND_HELPER_MSG="Unix domain socket \"$PRNGD_SOCKET\""
2335         else
2336                 RAND_HELPER_MSG="Command hashing (timeout $entropy_timeout)"
2337                 RAND_HELPER_CMDHASH=yes
2338                 INSTALL_SSH_PRNG_CMDS="yes"
2339         fi
2340 fi
2341 AC_SUBST(INSTALL_SSH_PRNG_CMDS)
2342
2343
2344 # Cheap hack to ensure NEWS-OS libraries are arranged right.
2345 if test ! -z "$SONY" ; then
2346   LIBS="$LIBS -liberty";
2347 fi
2348
2349 # Check for  long long datatypes
2350 AC_CHECK_TYPES([long long, unsigned long long, long double])
2351
2352 # Check datatype sizes
2353 AC_CHECK_SIZEOF(char, 1)
2354 AC_CHECK_SIZEOF(short int, 2)
2355 AC_CHECK_SIZEOF(int, 4)
2356 AC_CHECK_SIZEOF(long int, 4)
2357 AC_CHECK_SIZEOF(long long int, 8)
2358
2359 # Sanity check long long for some platforms (AIX)
2360 if test "x$ac_cv_sizeof_long_long_int" = "x4" ; then
2361         ac_cv_sizeof_long_long_int=0
2362 fi
2363
2364 # compute LLONG_MIN and LLONG_MAX if we don't know them.
2365 if test -z "$have_llong_max"; then
2366         AC_MSG_CHECKING([for max value of long long])
2367         AC_RUN_IFELSE(
2368                 [AC_LANG_SOURCE([[
2369 #include <stdio.h>
2370 /* Why is this so damn hard? */
2371 #ifdef __GNUC__
2372 # undef __GNUC__
2373 #endif
2374 #define __USE_ISOC99
2375 #include <limits.h>
2376 #define DATA "conftest.llminmax"
2377 #define my_abs(a) ((a) < 0 ? ((a) * -1) : (a))
2378
2379 /*
2380  * printf in libc on some platforms (eg old Tru64) does not understand %lld so
2381  * we do this the hard way.
2382  */
2383 static int
2384 fprint_ll(FILE *f, long long n)
2385 {
2386         unsigned int i;
2387         int l[sizeof(long long) * 8];
2388
2389         if (n < 0)
2390                 if (fprintf(f, "-") < 0)
2391                         return -1;
2392         for (i = 0; n != 0; i++) {
2393                 l[i] = my_abs(n % 10);
2394                 n /= 10;
2395         }
2396         do {
2397                 if (fprintf(f, "%d", l[--i]) < 0)
2398                         return -1;
2399         } while (i != 0);
2400         if (fprintf(f, " ") < 0)
2401                 return -1;
2402         return 0;
2403 }
2404
2405 int main(void) {
2406         FILE *f;
2407         long long i, llmin, llmax = 0;
2408
2409         if((f = fopen(DATA,"w")) == NULL)
2410                 exit(1);
2411
2412 #if defined(LLONG_MIN) && defined(LLONG_MAX)
2413         fprintf(stderr, "Using system header for LLONG_MIN and LLONG_MAX\n");
2414         llmin = LLONG_MIN;
2415         llmax = LLONG_MAX;
2416 #else
2417         fprintf(stderr, "Calculating  LLONG_MIN and LLONG_MAX\n");
2418         /* This will work on one's complement and two's complement */
2419         for (i = 1; i > llmax; i <<= 1, i++)
2420                 llmax = i;
2421         llmin = llmax + 1LL;    /* wrap */
2422 #endif
2423
2424         /* Sanity check */
2425         if (llmin + 1 < llmin || llmin - 1 < llmin || llmax + 1 > llmax
2426             || llmax - 1 > llmax || llmin == llmax || llmin == 0
2427             || llmax == 0 || llmax < LONG_MAX || llmin > LONG_MIN) {
2428                 fprintf(f, "unknown unknown\n");
2429                 exit(2);
2430         }
2431
2432         if (fprint_ll(f, llmin) < 0)
2433                 exit(3);
2434         if (fprint_ll(f, llmax) < 0)
2435                 exit(4);
2436         if (fclose(f) < 0)
2437                 exit(5);
2438         exit(0);
2439 }
2440                 ]])],
2441                 [
2442                         llong_min=`$AWK '{print $1}' conftest.llminmax`
2443                         llong_max=`$AWK '{print $2}' conftest.llminmax`
2444
2445                         AC_MSG_RESULT($llong_max)
2446                         AC_DEFINE_UNQUOTED(LLONG_MAX, [${llong_max}LL],
2447                             [max value of long long calculated by configure])
2448                         AC_MSG_CHECKING([for min value of long long])
2449                         AC_MSG_RESULT($llong_min)
2450                         AC_DEFINE_UNQUOTED(LLONG_MIN, [${llong_min}LL],
2451                             [min value of long long calculated by configure])
2452                 ],
2453                 [
2454                         AC_MSG_RESULT(not found)
2455                 ],
2456                 [
2457                         AC_MSG_WARN([cross compiling: not checking])
2458                 ]
2459         )
2460 fi
2461
2462
2463 # More checks for data types
2464 AC_CACHE_CHECK([for u_int type], ac_cv_have_u_int, [
2465         AC_TRY_COMPILE(
2466                 [ #include <sys/types.h> ],
2467                 [ u_int a; a = 1;],
2468                 [ ac_cv_have_u_int="yes" ],
2469                 [ ac_cv_have_u_int="no" ]
2470         )
2471 ])
2472 if test "x$ac_cv_have_u_int" = "xyes" ; then
2473         AC_DEFINE(HAVE_U_INT, 1, [define if you have u_int data type])
2474         have_u_int=1
2475 fi
2476
2477 AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [
2478         AC_TRY_COMPILE(
2479                 [ #include <sys/types.h> ],
2480                 [ int8_t a; int16_t b; int32_t c; a = b = c = 1;],
2481                 [ ac_cv_have_intxx_t="yes" ],
2482                 [ ac_cv_have_intxx_t="no" ]
2483         )
2484 ])
2485 if test "x$ac_cv_have_intxx_t" = "xyes" ; then
2486         AC_DEFINE(HAVE_INTXX_T, 1, [define if you have intxx_t data type])
2487         have_intxx_t=1
2488 fi
2489
2490 if (test -z "$have_intxx_t" && \
2491            test "x$ac_cv_header_stdint_h" = "xyes")
2492 then
2493     AC_MSG_CHECKING([for intXX_t types in stdint.h])
2494         AC_TRY_COMPILE(
2495                 [ #include <stdint.h> ],
2496                 [ int8_t a; int16_t b; int32_t c; a = b = c = 1;],
2497                 [
2498                         AC_DEFINE(HAVE_INTXX_T)
2499                         AC_MSG_RESULT(yes)
2500                 ],
2501                 [ AC_MSG_RESULT(no) ]
2502         )
2503 fi
2504
2505 AC_CACHE_CHECK([for int64_t type], ac_cv_have_int64_t, [
2506         AC_TRY_COMPILE(
2507                 [
2508 #include <sys/types.h>
2509 #ifdef HAVE_STDINT_H
2510 # include <stdint.h>
2511 #endif
2512 #include <sys/socket.h>
2513 #ifdef HAVE_SYS_BITYPES_H
2514 # include <sys/bitypes.h>
2515 #endif
2516                 ],
2517                 [ int64_t a; a = 1;],
2518                 [ ac_cv_have_int64_t="yes" ],
2519                 [ ac_cv_have_int64_t="no" ]
2520         )
2521 ])
2522 if test "x$ac_cv_have_int64_t" = "xyes" ; then
2523         AC_DEFINE(HAVE_INT64_T, 1, [define if you have int64_t data type])
2524 fi
2525
2526 AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [
2527         AC_TRY_COMPILE(
2528                 [ #include <sys/types.h> ],
2529                 [ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;],
2530                 [ ac_cv_have_u_intxx_t="yes" ],
2531                 [ ac_cv_have_u_intxx_t="no" ]
2532         )
2533 ])
2534 if test "x$ac_cv_have_u_intxx_t" = "xyes" ; then
2535         AC_DEFINE(HAVE_U_INTXX_T, 1, [define if you have u_intxx_t data type])
2536         have_u_intxx_t=1
2537 fi
2538
2539 if test -z "$have_u_intxx_t" ; then
2540     AC_MSG_CHECKING([for u_intXX_t types in sys/socket.h])
2541         AC_TRY_COMPILE(
2542                 [ #include <sys/socket.h> ],
2543                 [ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;],
2544                 [
2545                         AC_DEFINE(HAVE_U_INTXX_T)
2546                         AC_MSG_RESULT(yes)
2547                 ],
2548                 [ AC_MSG_RESULT(no) ]
2549         )
2550 fi
2551
2552 AC_CACHE_CHECK([for u_int64_t types], ac_cv_have_u_int64_t, [
2553         AC_TRY_COMPILE(
2554                 [ #include <sys/types.h> ],
2555                 [ u_int64_t a; a = 1;],
2556                 [ ac_cv_have_u_int64_t="yes" ],
2557                 [ ac_cv_have_u_int64_t="no" ]
2558         )
2559 ])
2560 if test "x$ac_cv_have_u_int64_t" = "xyes" ; then
2561         AC_DEFINE(HAVE_U_INT64_T, 1, [define if you have u_int64_t data type])
2562         have_u_int64_t=1
2563 fi
2564
2565 if test -z "$have_u_int64_t" ; then
2566     AC_MSG_CHECKING([for u_int64_t type in sys/bitypes.h])
2567         AC_TRY_COMPILE(
2568                 [ #include <sys/bitypes.h> ],
2569                 [ u_int64_t a; a = 1],
2570                 [
2571                         AC_DEFINE(HAVE_U_INT64_T)
2572                         AC_MSG_RESULT(yes)
2573                 ],
2574                 [ AC_MSG_RESULT(no) ]
2575         )
2576 fi
2577
2578 if test -z "$have_u_intxx_t" ; then
2579         AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [
2580                 AC_TRY_COMPILE(
2581                         [
2582 #include <sys/types.h>
2583                         ],
2584                         [ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1; ],
2585                         [ ac_cv_have_uintxx_t="yes" ],
2586                         [ ac_cv_have_uintxx_t="no" ]
2587                 )
2588         ])
2589         if test "x$ac_cv_have_uintxx_t" = "xyes" ; then
2590                 AC_DEFINE(HAVE_UINTXX_T, 1,
2591                         [define if you have uintxx_t data type])
2592         fi
2593 fi
2594
2595 if test -z "$have_uintxx_t" ; then
2596     AC_MSG_CHECKING([for uintXX_t types in stdint.h])
2597         AC_TRY_COMPILE(
2598                 [ #include <stdint.h> ],
2599                 [ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;],
2600                 [
2601                         AC_DEFINE(HAVE_UINTXX_T)
2602                         AC_MSG_RESULT(yes)
2603                 ],
2604                 [ AC_MSG_RESULT(no) ]
2605         )
2606 fi
2607
2608 if (test -z "$have_u_intxx_t" || test -z "$have_intxx_t" && \
2609            test "x$ac_cv_header_sys_bitypes_h" = "xyes")
2610 then
2611         AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h])
2612         AC_TRY_COMPILE(
2613                 [
2614 #include <sys/bitypes.h>
2615                 ],
2616                 [
2617                         int8_t a; int16_t b; int32_t c;
2618                         u_int8_t e; u_int16_t f; u_int32_t g;
2619                         a = b = c = e = f = g = 1;
2620                 ],
2621                 [
2622                         AC_DEFINE(HAVE_U_INTXX_T)
2623                         AC_DEFINE(HAVE_INTXX_T)
2624                         AC_MSG_RESULT(yes)
2625                 ],
2626                 [AC_MSG_RESULT(no)]
2627         )
2628 fi
2629
2630
2631 AC_CACHE_CHECK([for u_char], ac_cv_have_u_char, [
2632         AC_TRY_COMPILE(
2633                 [
2634 #include <sys/types.h>
2635                 ],
2636                 [ u_char foo; foo = 125; ],
2637                 [ ac_cv_have_u_char="yes" ],
2638                 [ ac_cv_have_u_char="no" ]
2639         )
2640 ])
2641 if test "x$ac_cv_have_u_char" = "xyes" ; then
2642         AC_DEFINE(HAVE_U_CHAR, 1, [define if you have u_char data type])
2643 fi
2644
2645 TYPE_SOCKLEN_T
2646
2647 AC_CHECK_TYPES(sig_atomic_t,,,[#include <signal.h>])
2648
2649 AC_CHECK_TYPES(in_addr_t,,,
2650 [#include <sys/types.h>
2651 #include <netinet/in.h>])
2652
2653 AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [
2654         AC_TRY_COMPILE(
2655                 [
2656 #include <sys/types.h>
2657                 ],
2658                 [ size_t foo; foo = 1235; ],
2659                 [ ac_cv_have_size_t="yes" ],
2660                 [ ac_cv_have_size_t="no" ]
2661         )
2662 ])
2663 if test "x$ac_cv_have_size_t" = "xyes" ; then
2664         AC_DEFINE(HAVE_SIZE_T, 1, [define if you have size_t data type])
2665 fi
2666
2667 AC_CACHE_CHECK([for ssize_t], ac_cv_have_ssize_t, [
2668         AC_TRY_COMPILE(
2669                 [
2670 #include <sys/types.h>
2671                 ],
2672                 [ ssize_t foo; foo = 1235; ],
2673                 [ ac_cv_have_ssize_t="yes" ],
2674                 [ ac_cv_have_ssize_t="no" ]
2675         )
2676 ])
2677 if test "x$ac_cv_have_ssize_t" = "xyes" ; then
2678         AC_DEFINE(HAVE_SSIZE_T, 1, [define if you have ssize_t data type])
2679 fi
2680
2681 AC_CACHE_CHECK([for clock_t], ac_cv_have_clock_t, [
2682         AC_TRY_COMPILE(
2683                 [
2684 #include <time.h>
2685                 ],
2686                 [ clock_t foo; foo = 1235; ],
2687                 [ ac_cv_have_clock_t="yes" ],
2688                 [ ac_cv_have_clock_t="no" ]
2689         )
2690 ])
2691 if test "x$ac_cv_have_clock_t" = "xyes" ; then
2692         AC_DEFINE(HAVE_CLOCK_T, 1, [define if you have clock_t data type])
2693 fi
2694
2695 AC_CACHE_CHECK([for sa_family_t], ac_cv_have_sa_family_t, [
2696         AC_TRY_COMPILE(
2697                 [
2698 #include <sys/types.h>
2699 #include <sys/socket.h>
2700                 ],
2701                 [ sa_family_t foo; foo = 1235; ],
2702                 [ ac_cv_have_sa_family_t="yes" ],
2703                 [ AC_TRY_COMPILE(
2704                   [
2705 #include <sys/types.h>
2706 #include <sys/socket.h>
2707 #include <netinet/in.h>
2708                 ],
2709                 [ sa_family_t foo; foo = 1235; ],
2710                 [ ac_cv_have_sa_family_t="yes" ],
2711
2712                 [ ac_cv_have_sa_family_t="no" ]
2713         )]
2714         )
2715 ])
2716 if test "x$ac_cv_have_sa_family_t" = "xyes" ; then
2717         AC_DEFINE(HAVE_SA_FAMILY_T, 1,
2718                 [define if you have sa_family_t data type])
2719 fi
2720
2721 AC_CACHE_CHECK([for pid_t], ac_cv_have_pid_t, [
2722         AC_TRY_COMPILE(
2723                 [
2724 #include <sys/types.h>
2725                 ],
2726                 [ pid_t foo; foo = 1235; ],
2727                 [ ac_cv_have_pid_t="yes" ],
2728                 [ ac_cv_have_pid_t="no" ]
2729         )
2730 ])
2731 if test "x$ac_cv_have_pid_t" = "xyes" ; then
2732         AC_DEFINE(HAVE_PID_T, 1, [define if you have pid_t data type])
2733 fi
2734
2735 AC_CACHE_CHECK([for mode_t], ac_cv_have_mode_t, [
2736         AC_TRY_COMPILE(
2737                 [
2738 #include <sys/types.h>
2739                 ],
2740                 [ mode_t foo; foo = 1235; ],
2741                 [ ac_cv_have_mode_t="yes" ],
2742                 [ ac_cv_have_mode_t="no" ]
2743         )
2744 ])
2745 if test "x$ac_cv_have_mode_t" = "xyes" ; then
2746         AC_DEFINE(HAVE_MODE_T, 1, [define if you have mode_t data type])
2747 fi
2748
2749
2750 AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [
2751         AC_TRY_COMPILE(
2752                 [
2753 #include <sys/types.h>
2754 #include <sys/socket.h>
2755                 ],
2756                 [ struct sockaddr_storage s; ],
2757                 [ ac_cv_have_struct_sockaddr_storage="yes" ],
2758                 [ ac_cv_have_struct_sockaddr_storage="no" ]
2759         )
2760 ])
2761 if test "x$ac_cv_have_struct_sockaddr_storage" = "xyes" ; then
2762         AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE, 1,
2763                 [define if you have struct sockaddr_storage data type])
2764 fi
2765
2766 AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [
2767         AC_TRY_COMPILE(
2768                 [
2769 #include <sys/types.h>
2770 #include <netinet/in.h>
2771                 ],
2772                 [ struct sockaddr_in6 s; s.sin6_family = 0; ],
2773                 [ ac_cv_have_struct_sockaddr_in6="yes" ],
2774                 [ ac_cv_have_struct_sockaddr_in6="no" ]
2775         )
2776 ])
2777 if test "x$ac_cv_have_struct_sockaddr_in6" = "xyes" ; then
2778         AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6, 1,
2779                 [define if you have struct sockaddr_in6 data type])
2780 fi
2781
2782 AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [
2783         AC_TRY_COMPILE(
2784                 [
2785 #include <sys/types.h>
2786 #include <netinet/in.h>
2787                 ],
2788                 [ struct in6_addr s; s.s6_addr[0] = 0; ],
2789                 [ ac_cv_have_struct_in6_addr="yes" ],
2790                 [ ac_cv_have_struct_in6_addr="no" ]
2791         )
2792 ])
2793 if test "x$ac_cv_have_struct_in6_addr" = "xyes" ; then
2794         AC_DEFINE(HAVE_STRUCT_IN6_ADDR, 1,
2795                 [define if you have struct in6_addr data type])
2796 fi
2797
2798 AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [
2799         AC_TRY_COMPILE(
2800                 [
2801 #include <sys/types.h>
2802 #include <sys/socket.h>
2803 #include <netdb.h>
2804                 ],
2805                 [ struct addrinfo s; s.ai_flags = AI_PASSIVE; ],
2806                 [ ac_cv_have_struct_addrinfo="yes" ],
2807                 [ ac_cv_have_struct_addrinfo="no" ]
2808         )
2809 ])
2810 if test "x$ac_cv_have_struct_addrinfo" = "xyes" ; then
2811         AC_DEFINE(HAVE_STRUCT_ADDRINFO, 1,
2812                 [define if you have struct addrinfo data type])
2813 fi
2814
2815 AC_CACHE_CHECK([for struct timeval], ac_cv_have_struct_timeval, [
2816         AC_TRY_COMPILE(
2817                 [ #include <sys/time.h> ],
2818                 [ struct timeval tv; tv.tv_sec = 1;],
2819                 [ ac_cv_have_struct_timeval="yes" ],
2820                 [ ac_cv_have_struct_timeval="no" ]
2821         )
2822 ])
2823 if test "x$ac_cv_have_struct_timeval" = "xyes" ; then
2824         AC_DEFINE(HAVE_STRUCT_TIMEVAL, 1, [define if you have struct timeval])
2825         have_struct_timeval=1
2826 fi
2827
2828 AC_CHECK_TYPES(struct timespec)
2829
2830 # We need int64_t or else certian parts of the compile will fail.
2831 if test "x$ac_cv_have_int64_t" = "xno" && \
2832         test "x$ac_cv_sizeof_long_int" != "x8" && \
2833         test "x$ac_cv_sizeof_long_long_int" = "x0" ; then
2834         echo "OpenSSH requires int64_t support.  Contact your vendor or install"
2835         echo "an alternative compiler (I.E., GCC) before continuing."
2836         echo ""
2837         exit 1;
2838 else
2839 dnl test snprintf (broken on SCO w/gcc)
2840         AC_RUN_IFELSE(
2841                 [AC_LANG_SOURCE([[
2842 #include <stdio.h>
2843 #include <string.h>
2844 #ifdef HAVE_SNPRINTF
2845 main()
2846 {
2847         char buf[50];
2848         char expected_out[50];
2849         int mazsize = 50 ;
2850 #if (SIZEOF_LONG_INT == 8)
2851         long int num = 0x7fffffffffffffff;
2852 #else
2853         long long num = 0x7fffffffffffffffll;
2854 #endif
2855         strcpy(expected_out, "9223372036854775807");
2856         snprintf(buf, mazsize, "%lld", num);
2857         if(strcmp(buf, expected_out) != 0)
2858                 exit(1);
2859         exit(0);
2860 }
2861 #else
2862 main() { exit(0); }
2863 #endif
2864                 ]])], [ true ], [ AC_DEFINE(BROKEN_SNPRINTF) ],
2865                 AC_MSG_WARN([cross compiling: Assuming working snprintf()])
2866         )
2867 fi
2868
2869 dnl Checks for structure members
2870 OSSH_CHECK_HEADER_FOR_FIELD(ut_host, utmp.h, HAVE_HOST_IN_UTMP)
2871 OSSH_CHECK_HEADER_FOR_FIELD(ut_host, utmpx.h, HAVE_HOST_IN_UTMPX)
2872 OSSH_CHECK_HEADER_FOR_FIELD(syslen, utmpx.h, HAVE_SYSLEN_IN_UTMPX)
2873 OSSH_CHECK_HEADER_FOR_FIELD(ut_pid, utmp.h, HAVE_PID_IN_UTMP)
2874 OSSH_CHECK_HEADER_FOR_FIELD(ut_type, utmp.h, HAVE_TYPE_IN_UTMP)
2875 OSSH_CHECK_HEADER_FOR_FIELD(ut_type, utmpx.h, HAVE_TYPE_IN_UTMPX)
2876 OSSH_CHECK_HEADER_FOR_FIELD(ut_tv, utmp.h, HAVE_TV_IN_UTMP)
2877 OSSH_CHECK_HEADER_FOR_FIELD(ut_id, utmp.h, HAVE_ID_IN_UTMP)
2878 OSSH_CHECK_HEADER_FOR_FIELD(ut_id, utmpx.h, HAVE_ID_IN_UTMPX)
2879 OSSH_CHECK_HEADER_FOR_FIELD(ut_addr, utmp.h, HAVE_ADDR_IN_UTMP)
2880 OSSH_CHECK_HEADER_FOR_FIELD(ut_addr, utmpx.h, HAVE_ADDR_IN_UTMPX)
2881 OSSH_CHECK_HEADER_FOR_FIELD(ut_addr_v6, utmp.h, HAVE_ADDR_V6_IN_UTMP)
2882 OSSH_CHECK_HEADER_FOR_FIELD(ut_addr_v6, utmpx.h, HAVE_ADDR_V6_IN_UTMPX)
2883 OSSH_CHECK_HEADER_FOR_FIELD(ut_exit, utmp.h, HAVE_EXIT_IN_UTMP)
2884 OSSH_CHECK_HEADER_FOR_FIELD(ut_time, utmp.h, HAVE_TIME_IN_UTMP)
2885 OSSH_CHECK_HEADER_FOR_FIELD(ut_time, utmpx.h, HAVE_TIME_IN_UTMPX)
2886 OSSH_CHECK_HEADER_FOR_FIELD(ut_tv, utmpx.h, HAVE_TV_IN_UTMPX)
2887
2888 AC_CHECK_MEMBERS([struct stat.st_blksize])
2889 AC_CHECK_MEMBER([struct __res_state.retrans], [], [AC_DEFINE(__res_state, state,
2890         [Define if we don't have struct __res_state in resolv.h])],
2891 [
2892 #include <stdio.h>
2893 #if HAVE_SYS_TYPES_H
2894 # include <sys/types.h>
2895 #endif
2896 #include <netinet/in.h>
2897 #include <arpa/nameser.h>
2898 #include <resolv.h>
2899 ])
2900
2901 AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
2902                 ac_cv_have_ss_family_in_struct_ss, [
2903         AC_TRY_COMPILE(
2904                 [
2905 #include <sys/types.h>
2906 #include <sys/socket.h>
2907                 ],
2908                 [ struct sockaddr_storage s; s.ss_family = 1; ],
2909                 [ ac_cv_have_ss_family_in_struct_ss="yes" ],
2910                 [ ac_cv_have_ss_family_in_struct_ss="no" ],
2911         )
2912 ])
2913 if test "x$ac_cv_have_ss_family_in_struct_ss" = "xyes" ; then
2914         AC_DEFINE(HAVE_SS_FAMILY_IN_SS, 1, [Fields in struct sockaddr_storage])
2915 fi
2916
2917 AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage],
2918                 ac_cv_have___ss_family_in_struct_ss, [
2919         AC_TRY_COMPILE(
2920                 [
2921 #include <sys/types.h>
2922 #include <sys/socket.h>
2923                 ],
2924                 [ struct sockaddr_storage s; s.__ss_family = 1; ],
2925                 [ ac_cv_have___ss_family_in_struct_ss="yes" ],
2926                 [ ac_cv_have___ss_family_in_struct_ss="no" ]
2927         )
2928 ])
2929 if test "x$ac_cv_have___ss_family_in_struct_ss" = "xyes" ; then
2930         AC_DEFINE(HAVE___SS_FAMILY_IN_SS, 1,
2931                 [Fields in struct sockaddr_storage])
2932 fi
2933
2934 AC_CACHE_CHECK([for pw_class field in struct passwd],
2935                 ac_cv_have_pw_class_in_struct_passwd, [
2936         AC_TRY_COMPILE(
2937                 [
2938 #include <pwd.h>
2939                 ],
2940                 [ struct passwd p; p.pw_class = 0; ],
2941                 [ ac_cv_have_pw_class_in_struct_passwd="yes" ],
2942                 [ ac_cv_have_pw_class_in_struct_passwd="no" ]
2943         )
2944 ])
2945 if test "x$ac_cv_have_pw_class_in_struct_passwd" = "xyes" ; then
2946         AC_DEFINE(HAVE_PW_CLASS_IN_PASSWD, 1,
2947                 [Define if your password has a pw_class field])
2948 fi
2949
2950 AC_CACHE_CHECK([for pw_expire field in struct passwd],
2951                 ac_cv_have_pw_expire_in_struct_passwd, [
2952         AC_TRY_COMPILE(
2953                 [
2954 #include <pwd.h>
2955                 ],
2956                 [ struct passwd p; p.pw_expire = 0; ],
2957                 [ ac_cv_have_pw_expire_in_struct_passwd="yes" ],
2958                 [ ac_cv_have_pw_expire_in_struct_passwd="no" ]
2959         )
2960 ])
2961 if test "x$ac_cv_have_pw_expire_in_struct_passwd" = "xyes" ; then
2962         AC_DEFINE(HAVE_PW_EXPIRE_IN_PASSWD, 1,
2963                 [Define if your password has a pw_expire field])
2964 fi
2965
2966 AC_CACHE_CHECK([for pw_change field in struct passwd],
2967                 ac_cv_have_pw_change_in_struct_passwd, [
2968         AC_TRY_COMPILE(
2969                 [
2970 #include <pwd.h>
2971                 ],
2972                 [ struct passwd p; p.pw_change = 0; ],
2973                 [ ac_cv_have_pw_change_in_struct_passwd="yes" ],
2974                 [ ac_cv_have_pw_change_in_struct_passwd="no" ]
2975         )
2976 ])
2977 if test "x$ac_cv_have_pw_change_in_struct_passwd" = "xyes" ; then
2978         AC_DEFINE(HAVE_PW_CHANGE_IN_PASSWD, 1,
2979                 [Define if your password has a pw_change field])
2980 fi
2981
2982 dnl make sure we're using the real structure members and not defines
2983 AC_CACHE_CHECK([for msg_accrights field in struct msghdr],
2984                 ac_cv_have_accrights_in_msghdr, [
2985         AC_COMPILE_IFELSE(
2986                 [
2987 #include <sys/types.h>
2988 #include <sys/socket.h>
2989 #include <sys/uio.h>
2990 int main() {
2991 #ifdef msg_accrights
2992 #error "msg_accrights is a macro"
2993 exit(1);
2994 #endif
2995 struct msghdr m;
2996 m.msg_accrights = 0;
2997 exit(0);
2998 }
2999                 ],
3000                 [ ac_cv_have_accrights_in_msghdr="yes" ],
3001                 [ ac_cv_have_accrights_in_msghdr="no" ]
3002         )
3003 ])
3004 if test "x$ac_cv_have_accrights_in_msghdr" = "xyes" ; then
3005         AC_DEFINE(HAVE_ACCRIGHTS_IN_MSGHDR, 1,
3006                 [Define if your system uses access rights style
3007                 file descriptor passing])
3008 fi
3009
3010 AC_CACHE_CHECK([for msg_control field in struct msghdr],
3011                 ac_cv_have_control_in_msghdr, [
3012         AC_COMPILE_IFELSE(
3013                 [
3014 #include <sys/types.h>
3015 #include <sys/socket.h>
3016 #include <sys/uio.h>
3017 int main() {
3018 #ifdef msg_control
3019 #error "msg_control is a macro"
3020 exit(1);
3021 #endif
3022 struct msghdr m;
3023 m.msg_control = 0;
3024 exit(0);
3025 }
3026                 ],
3027                 [ ac_cv_have_control_in_msghdr="yes" ],
3028                 [ ac_cv_have_control_in_msghdr="no" ]
3029         )
3030 ])
3031 if test "x$ac_cv_have_control_in_msghdr" = "xyes" ; then
3032         AC_DEFINE(HAVE_CONTROL_IN_MSGHDR, 1,
3033                 [Define if your system uses ancillary data style
3034                 file descriptor passing])
3035 fi
3036
3037 AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
3038         AC_TRY_LINK([],
3039                 [ extern char *__progname; printf("%s", __progname); ],
3040                 [ ac_cv_libc_defines___progname="yes" ],
3041                 [ ac_cv_libc_defines___progname="no" ]
3042         )
3043 ])
3044 if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
3045         AC_DEFINE(HAVE___PROGNAME, 1, [Define if libc defines __progname])
3046 fi
3047
3048 AC_CACHE_CHECK([whether $CC implements __FUNCTION__], ac_cv_cc_implements___FUNCTION__, [
3049         AC_TRY_LINK([
3050 #include <stdio.h>
3051 ],
3052                 [ printf("%s", __FUNCTION__); ],
3053                 [ ac_cv_cc_implements___FUNCTION__="yes" ],
3054                 [ ac_cv_cc_implements___FUNCTION__="no" ]
3055         )
3056 ])
3057 if test "x$ac_cv_cc_implements___FUNCTION__" = "xyes" ; then
3058         AC_DEFINE(HAVE___FUNCTION__, 1,
3059                 [Define if compiler implements __FUNCTION__])
3060 fi
3061
3062 AC_CACHE_CHECK([whether $CC implements __func__], ac_cv_cc_implements___func__, [
3063         AC_TRY_LINK([
3064 #include <stdio.h>
3065 ],
3066                 [ printf("%s", __func__); ],
3067                 [ ac_cv_cc_implements___func__="yes" ],
3068                 [ ac_cv_cc_implements___func__="no" ]
3069         )
3070 ])
3071 if test "x$ac_cv_cc_implements___func__" = "xyes" ; then
3072         AC_DEFINE(HAVE___func__, 1, [Define if compiler implements __func__])
3073 fi
3074
3075 AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
3076         AC_TRY_LINK(
3077                 [#include <stdarg.h>
3078                  va_list x,y;],
3079                 [va_copy(x,y);],
3080                 [ ac_cv_have_va_copy="yes" ],
3081                 [ ac_cv_have_va_copy="no" ]
3082         )
3083 ])
3084 if test "x$ac_cv_have_va_copy" = "xyes" ; then
3085         AC_DEFINE(HAVE_VA_COPY, 1, [Define if va_copy exists])
3086 fi
3087
3088 AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
3089         AC_TRY_LINK(
3090                 [#include <stdarg.h>
3091                  va_list x,y;],
3092                 [__va_copy(x,y);],
3093                 [ ac_cv_have___va_copy="yes" ],
3094                 [ ac_cv_have___va_copy="no" ]
3095         )
3096 ])
3097 if test "x$ac_cv_have___va_copy" = "xyes" ; then
3098         AC_DEFINE(HAVE___VA_COPY, 1, [Define if __va_copy exists])
3099 fi
3100
3101 AC_CACHE_CHECK([whether getopt has optreset support],
3102                 ac_cv_have_getopt_optreset, [
3103         AC_TRY_LINK(
3104                 [
3105 #include <getopt.h>
3106                 ],
3107                 [ extern int optreset; optreset = 0; ],
3108                 [ ac_cv_have_getopt_optreset="yes" ],
3109                 [ ac_cv_have_getopt_optreset="no" ]
3110         )
3111 ])
3112 if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then
3113         AC_DEFINE(HAVE_GETOPT_OPTRESET, 1,
3114                 [Define if your getopt(3) defines and uses optreset])
3115 fi
3116
3117 AC_CACHE_CHECK([if libc defines sys_errlist], ac_cv_libc_defines_sys_errlist, [
3118         AC_TRY_LINK([],
3119                 [ extern const char *const sys_errlist[]; printf("%s", sys_errlist[0]);],
3120                 [ ac_cv_libc_defines_sys_errlist="yes" ],
3121                 [ ac_cv_libc_defines_sys_errlist="no" ]
3122         )
3123 ])
3124 if test "x$ac_cv_libc_defines_sys_errlist" = "xyes" ; then
3125         AC_DEFINE(HAVE_SYS_ERRLIST, 1,
3126                 [Define if your system defines sys_errlist[]])
3127 fi
3128
3129
3130 AC_CACHE_CHECK([if libc defines sys_nerr], ac_cv_libc_defines_sys_nerr, [
3131         AC_TRY_LINK([],
3132                 [ extern int sys_nerr; printf("%i", sys_nerr);],
3133                 [ ac_cv_libc_defines_sys_nerr="yes" ],
3134                 [ ac_cv_libc_defines_sys_nerr="no" ]
3135         )
3136 ])
3137 if test "x$ac_cv_libc_defines_sys_nerr" = "xyes" ; then
3138         AC_DEFINE(HAVE_SYS_NERR, 1, [Define if your system defines sys_nerr])
3139 fi
3140
3141 SCARD_MSG="no"
3142 # Check whether user wants sectok support
3143 AC_ARG_WITH(sectok,
3144         [  --with-sectok           Enable smartcard support using libsectok],
3145         [
3146                 if test "x$withval" != "xno" ; then
3147                         if test "x$withval" != "xyes" ; then
3148                                 CPPFLAGS="$CPPFLAGS -I${withval}"
3149                                 LDFLAGS="$LDFLAGS -L${withval}"
3150                                 if test ! -z "$need_dash_r" ; then
3151                                         LDFLAGS="$LDFLAGS -R${withval}"
3152                                 fi
3153                                 if test ! -z "$blibpath" ; then
3154                                         blibpath="$blibpath:${withval}"
3155                                 fi
3156                         fi
3157                         AC_CHECK_HEADERS(sectok.h)
3158                         if test "$ac_cv_header_sectok_h" != yes; then
3159                                 AC_MSG_ERROR(Can't find sectok.h)
3160                         fi
3161                         AC_CHECK_LIB(sectok, sectok_open)
3162                         if test "$ac_cv_lib_sectok_sectok_open" != yes; then
3163                                 AC_MSG_ERROR(Can't find libsectok)
3164                         fi
3165                         AC_DEFINE(SMARTCARD, 1,
3166                                 [Define if you want smartcard support])
3167                         AC_DEFINE(USE_SECTOK, 1,
3168                                 [Define if you want smartcard support
3169                                 using sectok])
3170                         SCARD_MSG="yes, using sectok"
3171                 fi
3172         ]
3173 )
3174
3175 # Check whether user wants OpenSC support
3176 OPENSC_CONFIG="no"
3177 AC_ARG_WITH(opensc,
3178         [  --with-opensc[[=PFX]]     Enable smartcard support using OpenSC (optionally in PATH)],
3179         [
3180             if test "x$withval" != "xno" ; then
3181                 if test "x$withval" != "xyes" ; then
3182                         OPENSC_CONFIG=$withval/bin/opensc-config
3183                 else
3184                         AC_PATH_PROG(OPENSC_CONFIG, opensc-config, no)
3185                 fi
3186                 if test "$OPENSC_CONFIG" != "no"; then
3187                         LIBOPENSC_CFLAGS=`$OPENSC_CONFIG --cflags`
3188                         LIBOPENSC_LIBS=`$OPENSC_CONFIG --libs`
3189                         CPPFLAGS="$CPPFLAGS $LIBOPENSC_CFLAGS"
3190                         LIBS="$LIBS $LIBOPENSC_LIBS"
3191                         AC_DEFINE(SMARTCARD)
3192                         AC_DEFINE(USE_OPENSC, 1,
3193                                 [Define if you want smartcard support
3194                                 using OpenSC])
3195                         SCARD_MSG="yes, using OpenSC"
3196                 fi
3197             fi
3198         ]
3199 )
3200
3201 # Check libraries needed by DNS fingerprint support
3202 AC_SEARCH_LIBS(getrrsetbyname, resolv,
3203         [AC_DEFINE(HAVE_GETRRSETBYNAME, 1,
3204                 [Define if getrrsetbyname() exists])],
3205         [
3206                 # Needed by our getrrsetbyname()
3207                 AC_SEARCH_LIBS(res_query, resolv)
3208                 AC_SEARCH_LIBS(dn_expand, resolv)
3209                 AC_MSG_CHECKING(if res_query will link)
3210                 AC_TRY_LINK_FUNC(res_query, AC_MSG_RESULT(yes),
3211                    [AC_MSG_RESULT(no)
3212                     saved_LIBS="$LIBS"
3213                     LIBS="$LIBS -lresolv"
3214                     AC_MSG_CHECKING(for res_query in -lresolv)
3215                     AC_LINK_IFELSE([
3216 #include <resolv.h>
3217 int main()
3218 {
3219         res_query (0, 0, 0, 0, 0);
3220         return 0;
3221 }
3222                         ],
3223                         [LIBS="$LIBS -lresolv"
3224                          AC_MSG_RESULT(yes)],
3225                         [LIBS="$saved_LIBS"
3226                          AC_MSG_RESULT(no)])
3227                     ])
3228                 AC_CHECK_FUNCS(_getshort _getlong)
3229                 AC_CHECK_DECLS([_getshort, _getlong], , ,
3230                     [#include <sys/types.h>
3231                     #include <arpa/nameser.h>])
3232                 AC_CHECK_MEMBER(HEADER.ad,
3233                         [AC_DEFINE(HAVE_HEADER_AD, 1,
3234                             [Define if HEADER.ad exists in arpa/nameser.h])],,
3235                         [#include <arpa/nameser.h>])
3236         ])
3237
3238 AC_MSG_CHECKING(if struct __res_state _res is an extern)
3239 AC_LINK_IFELSE([
3240 #include <stdio.h>
3241 #if HAVE_SYS_TYPES_H
3242 # include <sys/types.h>
3243 #endif
3244 #include <netinet/in.h>
3245 #include <arpa/nameser.h>
3246 #include <resolv.h>
3247 extern struct __res_state _res;
3248 int main() { return 0; }
3249                 ],
3250                 [AC_MSG_RESULT(yes)
3251                  AC_DEFINE(HAVE__RES_EXTERN, 1,
3252                     [Define if you have struct __res_state _res as an extern])
3253                 ],
3254                 [ AC_MSG_RESULT(no) ]
3255 )
3256
3257 # Check whether user wants SELinux support
3258 SELINUX_MSG="no"
3259 LIBSELINUX=""
3260 AC_ARG_WITH(selinux,
3261         [  --with-selinux          Enable SELinux support],
3262         [ if test "x$withval" != "xno" ; then
3263                 save_LIBS="$LIBS"
3264                 AC_DEFINE(WITH_SELINUX,1,[Define if you want SELinux support.])
3265                 SELINUX_MSG="yes"
3266                 AC_CHECK_HEADER([selinux/selinux.h], ,
3267                     AC_MSG_ERROR(SELinux support requires selinux.h header))
3268                 AC_CHECK_LIB(selinux, setexeccon, [ LIBSELINUX="-lselinux" ],
3269                     AC_MSG_ERROR(SELinux support requires libselinux library))
3270                 SSHDLIBS="$SSHDLIBS $LIBSELINUX"
3271                 AC_CHECK_FUNCS(getseuserbyname get_default_context_with_level)
3272                 LIBS="$save_LIBS"
3273         fi ]
3274 )
3275
3276 # Check whether user wants Kerberos 5 support
3277 KRB5_MSG="no"
3278 AC_ARG_WITH(kerberos5,
3279         [  --with-kerberos5=PATH   Enable Kerberos 5 support],
3280         [ if test "x$withval" != "xno" ; then
3281                 if test "x$withval" = "xyes" ; then
3282                         KRB5ROOT="/usr/local"
3283                 else
3284                         KRB5ROOT=${withval}
3285                 fi
3286
3287                 AC_DEFINE(KRB5, 1, [Define if you want Kerberos 5 support])
3288                 KRB5_MSG="yes"
3289
3290                 AC_MSG_CHECKING(for krb5-config)
3291                 if test -x  $KRB5ROOT/bin/krb5-config ; then
3292                         KRB5CONF=$KRB5ROOT/bin/krb5-config
3293                         AC_MSG_RESULT($KRB5CONF)
3294
3295                         AC_MSG_CHECKING(for gssapi support)
3296                         if $KRB5CONF | grep gssapi >/dev/null ; then
3297                                 AC_MSG_RESULT(yes)
3298                                 AC_DEFINE(GSSAPI, 1,
3299                                         [Define this if you want GSSAPI
3300                                         support in the version 2 protocol])
3301                                 k5confopts=gssapi
3302                         else
3303                                 AC_MSG_RESULT(no)
3304                                 k5confopts=""
3305                         fi
3306                         K5CFLAGS="`$KRB5CONF --cflags $k5confopts`"
3307                         K5LIBS="`$KRB5CONF --libs $k5confopts`"
3308                         CPPFLAGS="$CPPFLAGS $K5CFLAGS"
3309                         AC_MSG_CHECKING(whether we are using Heimdal)
3310                         AC_TRY_COMPILE([ #include <krb5.h> ],
3311                                        [ char *tmp = heimdal_version; ],
3312                                        [ AC_MSG_RESULT(yes)
3313                                          AC_DEFINE(HEIMDAL, 1,
3314                                         [Define this if you are using the
3315                                         Heimdal version of Kerberos V5]) ],
3316                                          AC_MSG_RESULT(no)
3317                         )
3318                 else
3319                         AC_MSG_RESULT(no)
3320                         CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include"
3321                         LDFLAGS="$LDFLAGS -L${KRB5ROOT}/lib"
3322                         AC_MSG_CHECKING(whether we are using Heimdal)
3323                         AC_TRY_COMPILE([ #include <krb5.h> ],
3324                                        [ char *tmp = heimdal_version; ],
3325                                        [ AC_MSG_RESULT(yes)
3326                                          AC_DEFINE(HEIMDAL)
3327                                          K5LIBS="-lkrb5 -ldes"
3328                                          K5LIBS="$K5LIBS -lcom_err -lasn1"
3329                                          AC_CHECK_LIB(roken, net_write,
3330                                            [K5LIBS="$K5LIBS -lroken"])
3331                                        ],
3332                                        [ AC_MSG_RESULT(no)
3333                                          K5LIBS="-lkrb5 -lk5crypto -lcom_err"
3334                                        ]
3335                         )
3336                         AC_SEARCH_LIBS(dn_expand, resolv)
3337
3338                         AC_CHECK_LIB(gssapi,gss_init_sec_context,
3339                                 [ AC_DEFINE(GSSAPI)
3340                                   K5LIBS="-lgssapi $K5LIBS" ],
3341                                 [ AC_CHECK_LIB(gssapi_krb5,gss_init_sec_context,
3342                                         [ AC_DEFINE(GSSAPI)
3343                                           K5LIBS="-lgssapi_krb5 $K5LIBS" ],
3344                                         AC_MSG_WARN([Cannot find any suitable gss-api library - build may fail]),
3345                                         $K5LIBS)
3346                                 ],
3347                                 $K5LIBS)
3348
3349                         AC_CHECK_HEADER(gssapi.h, ,
3350                                 [ unset ac_cv_header_gssapi_h
3351                                   CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
3352                                   AC_CHECK_HEADERS(gssapi.h, ,
3353                                         AC_MSG_WARN([Cannot find any suitable gss-api header - build may fail])
3354                                   )
3355                                 ]
3356                         )
3357
3358                         oldCPP="$CPPFLAGS"
3359                         CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
3360                         AC_CHECK_HEADER(gssapi_krb5.h, ,
3361                                         [ CPPFLAGS="$oldCPP" ])
3362
3363                 fi
3364                 if test ! -z "$need_dash_r" ; then
3365                         LDFLAGS="$LDFLAGS -R${KRB5ROOT}/lib"
3366                 fi
3367                 if test ! -z "$blibpath" ; then
3368                         blibpath="$blibpath:${KRB5ROOT}/lib"
3369                 fi
3370
3371                 AC_CHECK_HEADERS(gssapi.h gssapi/gssapi.h)
3372                 AC_CHECK_HEADERS(gssapi_krb5.h gssapi/gssapi_krb5.h)
3373                 AC_CHECK_HEADERS(gssapi_generic.h gssapi/gssapi_generic.h)
3374
3375                 LIBS="$LIBS $K5LIBS"
3376                 AC_SEARCH_LIBS(k_hasafs, kafs, AC_DEFINE(USE_AFS, 1,
3377                         [Define this if you want to use libkafs' AFS support]))
3378         fi
3379         ]
3380 )
3381
3382 # Looking for programs, paths and files
3383
3384 PRIVSEP_PATH=/var/empty
3385 AC_ARG_WITH(privsep-path,
3386         [  --with-privsep-path=xxx Path for privilege separation chroot (default=/var/empty)],
3387         [
3388                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
3389                     test "x${withval}" != "xyes"; then
3390                         PRIVSEP_PATH=$withval
3391                 fi
3392         ]
3393 )
3394 AC_SUBST(PRIVSEP_PATH)
3395
3396 AC_ARG_WITH(xauth,
3397         [  --with-xauth=PATH       Specify path to xauth program ],
3398         [
3399                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
3400                     test "x${withval}" != "xyes"; then
3401                         xauth_path=$withval
3402                 fi
3403         ],
3404         [
3405                 TestPath="$PATH"
3406                 TestPath="${TestPath}${PATH_SEPARATOR}/usr/X/bin"
3407                 TestPath="${TestPath}${PATH_SEPARATOR}/usr/bin/X11"
3408                 TestPath="${TestPath}${PATH_SEPARATOR}/usr/X11R6/bin"
3409                 TestPath="${TestPath}${PATH_SEPARATOR}/usr/openwin/bin"
3410                 AC_PATH_PROG(xauth_path, xauth, , $TestPath)
3411                 if (test ! -z "$xauth_path" && test -x "/usr/openwin/bin/xauth") ; then
3412                         xauth_path="/usr/openwin/bin/xauth"
3413                 fi
3414         ]
3415 )
3416
3417 STRIP_OPT=-s
3418 AC_ARG_ENABLE(strip,
3419         [  --disable-strip         Disable calling strip(1) on install],
3420         [
3421                 if test "x$enableval" = "xno" ; then
3422                         STRIP_OPT=
3423                 fi
3424         ]
3425 )
3426 AC_SUBST(STRIP_OPT)
3427
3428 if test -z "$xauth_path" ; then
3429         XAUTH_PATH="undefined"
3430         AC_SUBST(XAUTH_PATH)
3431 else
3432         AC_DEFINE_UNQUOTED(XAUTH_PATH, "$xauth_path",
3433                 [Define if xauth is found in your path])
3434         XAUTH_PATH=$xauth_path
3435         AC_SUBST(XAUTH_PATH)
3436 fi
3437
3438 # Check for mail directory (last resort if we cannot get it from headers)
3439 if test ! -z "$MAIL" ; then
3440         maildir=`dirname $MAIL`
3441         AC_DEFINE_UNQUOTED(MAIL_DIRECTORY, "$maildir",
3442                 [Set this to your mail directory if you don't have maillock.h])
3443 fi
3444
3445 if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes"; then
3446         AC_MSG_WARN([cross compiling: Disabling /dev/ptmx test])
3447         disable_ptmx_check=yes
3448 fi
3449 if test -z "$no_dev_ptmx" ; then
3450         if test "x$disable_ptmx_check" != "xyes" ; then
3451                 AC_CHECK_FILE("/dev/ptmx",
3452                         [
3453                                 AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX, 1,
3454                                         [Define if you have /dev/ptmx])
3455                                 have_dev_ptmx=1
3456                         ]
3457                 )
3458         fi
3459 fi
3460
3461 if test ! -z "$cross_compiling" && test "x$cross_compiling" != "xyes"; then
3462         AC_CHECK_FILE("/dev/ptc",
3463                 [
3464                         AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC, 1,
3465                                 [Define if you have /dev/ptc])
3466                         have_dev_ptc=1
3467                 ]
3468         )
3469 else
3470         AC_MSG_WARN([cross compiling: Disabling /dev/ptc test])
3471 fi
3472
3473 # Options from here on. Some of these are preset by platform above
3474 AC_ARG_WITH(mantype,
3475         [  --with-mantype=man|cat|doc  Set man page type],
3476         [
3477                 case "$withval" in
3478                 man|cat|doc)
3479                         MANTYPE=$withval
3480                         ;;
3481                 *)
3482                         AC_MSG_ERROR(invalid man type: $withval)
3483                         ;;
3484                 esac
3485         ]
3486 )
3487 if test -z "$MANTYPE"; then
3488         TestPath="/usr/bin${PATH_SEPARATOR}/usr/ucb"
3489         AC_PATH_PROGS(NROFF, nroff awf, /bin/false, $TestPath)
3490         if ${NROFF} -mdoc ${srcdir}/ssh.1 >/dev/null 2>&1; then
3491                 MANTYPE=doc
3492         elif ${NROFF} -man ${srcdir}/ssh.1 >/dev/null 2>&1; then
3493                 MANTYPE=man
3494         else
3495                 MANTYPE=cat
3496         fi
3497 fi
3498 AC_SUBST(MANTYPE)
3499 if test "$MANTYPE" = "doc"; then
3500         mansubdir=man;
3501 else
3502         mansubdir=$MANTYPE;
3503 fi
3504 AC_SUBST(mansubdir)
3505
3506 # Check whether to enable MD5 passwords
3507 MD5_MSG="no"
3508 AC_ARG_WITH(md5-passwords,
3509         [  --with-md5-passwords    Enable use of MD5 passwords],
3510         [
3511                 if test "x$withval" != "xno" ; then
3512                         AC_DEFINE(HAVE_MD5_PASSWORDS, 1,
3513                                 [Define if you want to allow MD5 passwords])
3514                         MD5_MSG="yes"
3515                 fi
3516         ]
3517 )
3518
3519 # Whether to disable shadow password support
3520 AC_ARG_WITH(shadow,
3521         [  --without-shadow        Disable shadow password support],
3522         [
3523                 if test "x$withval" = "xno" ; then
3524                         AC_DEFINE(DISABLE_SHADOW)
3525                         disable_shadow=yes
3526                 fi
3527         ]
3528 )
3529
3530 if test -z "$disable_shadow" ; then
3531         AC_MSG_CHECKING([if the systems has expire shadow information])
3532         AC_TRY_COMPILE(
3533         [
3534 #include <sys/types.h>
3535 #include <shadow.h>
3536         struct spwd sp;
3537         ],[ sp.sp_expire = sp.sp_lstchg = sp.sp_inact = 0; ],
3538         [ sp_expire_available=yes ], []
3539         )
3540
3541         if test "x$sp_expire_available" = "xyes" ; then
3542                 AC_MSG_RESULT(yes)
3543                 AC_DEFINE(HAS_SHADOW_EXPIRE, 1,
3544                     [Define if you want to use shadow password expire field])
3545         else
3546                 AC_MSG_RESULT(no)
3547         fi
3548 fi
3549
3550 # Use ip address instead of hostname in $DISPLAY
3551 if test ! -z "$IPADDR_IN_DISPLAY" ; then
3552         DISPLAY_HACK_MSG="yes"
3553         AC_DEFINE(IPADDR_IN_DISPLAY, 1,
3554                 [Define if you need to use IP address
3555                 instead of hostname in $DISPLAY])
3556 else
3557         DISPLAY_HACK_MSG="no"
3558         AC_ARG_WITH(ipaddr-display,
3559                 [  --with-ipaddr-display   Use ip address instead of hostname in \$DISPLAY],
3560                 [
3561                         if test "x$withval" != "xno" ; then
3562                                 AC_DEFINE(IPADDR_IN_DISPLAY)
3563                                 DISPLAY_HACK_MSG="yes"
3564                         fi
3565                 ]
3566         )
3567 fi
3568
3569 # check for /etc/default/login and use it if present.
3570 AC_ARG_ENABLE(etc-default-login,
3571         [  --disable-etc-default-login Disable using PATH from /etc/default/login [no]],
3572         [ if test "x$enableval" = "xno"; then
3573                 AC_MSG_NOTICE([/etc/default/login handling disabled])
3574                 etc_default_login=no
3575           else
3576                 etc_default_login=yes
3577           fi ],
3578         [ if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes";
3579           then
3580                 AC_MSG_WARN([cross compiling: not checking /etc/default/login])
3581                 etc_default_login=no
3582           else
3583                 etc_default_login=yes
3584           fi ]
3585 )
3586
3587 if test "x$etc_default_login" != "xno"; then
3588         AC_CHECK_FILE("/etc/default/login",
3589             [ external_path_file=/etc/default/login ])
3590         if test "x$external_path_file" = "x/etc/default/login"; then
3591                 AC_DEFINE(HAVE_ETC_DEFAULT_LOGIN, 1,
3592                         [Define if your system has /etc/default/login])
3593         fi
3594 fi
3595
3596 dnl BSD systems use /etc/login.conf so --with-default-path= has no effect
3597 if test $ac_cv_func_login_getcapbool = "yes" && \
3598         test $ac_cv_header_login_cap_h = "yes" ; then
3599         external_path_file=/etc/login.conf
3600 fi
3601
3602 # Whether to mess with the default path
3603 SERVER_PATH_MSG="(default)"
3604 AC_ARG_WITH(default-path,
3605         [  --with-default-path=    Specify default \$PATH environment for server],
3606         [
3607                 if test "x$external_path_file" = "x/etc/login.conf" ; then
3608                         AC_MSG_WARN([
3609 --with-default-path=PATH has no effect on this system.
3610 Edit /etc/login.conf instead.])
3611                 elif test "x$withval" != "xno" ; then
3612                         if test ! -z "$external_path_file" ; then
3613                                 AC_MSG_WARN([
3614 --with-default-path=PATH will only be used if PATH is not defined in
3615 $external_path_file .])
3616                         fi
3617                         user_path="$withval"
3618                         SERVER_PATH_MSG="$withval"
3619                 fi
3620         ],
3621         [ if test "x$external_path_file" = "x/etc/login.conf" ; then
3622                 AC_MSG_WARN([Make sure the path to scp is in /etc/login.conf])
3623         else
3624                 if test ! -z "$external_path_file" ; then
3625                         AC_MSG_WARN([
3626 If PATH is defined in $external_path_file, ensure the path to scp is included,
3627 otherwise scp will not work.])
3628                 fi
3629                 AC_RUN_IFELSE(
3630                         [AC_LANG_SOURCE([[
3631 /* find out what STDPATH is */
3632 #include <stdio.h>
3633 #ifdef HAVE_PATHS_H
3634 # include <paths.h>
3635 #endif
3636 #ifndef _PATH_STDPATH
3637 # ifdef _PATH_USERPATH  /* Irix */
3638 #  define _PATH_STDPATH _PATH_USERPATH
3639 # else
3640 #  define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
3641 # endif
3642 #endif
3643 #include <sys/types.h>
3644 #include <sys/stat.h>
3645 #include <fcntl.h>
3646 #define DATA "conftest.stdpath"
3647
3648 main()
3649 {
3650         FILE *fd;
3651         int rc;
3652
3653         fd = fopen(DATA,"w");
3654         if(fd == NULL)
3655                 exit(1);
3656
3657         if ((rc = fprintf(fd,"%s", _PATH_STDPATH)) < 0)
3658                 exit(1);
3659
3660         exit(0);
3661 }
3662                 ]])],
3663                 [ user_path=`cat conftest.stdpath` ],
3664                 [ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ],
3665                 [ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ]
3666         )
3667 # make sure $bindir is in USER_PATH so scp will work
3668                 t_bindir=`eval echo ${bindir}`
3669                 case $t_bindir in
3670                         NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$prefix~"` ;;
3671                 esac
3672                 case $t_bindir in
3673                         NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$ac_default_prefix~"` ;;
3674                 esac
3675                 echo $user_path | grep ":$t_bindir"  > /dev/null 2>&1
3676                 if test $? -ne 0  ; then
3677                         echo $user_path | grep "^$t_bindir"  > /dev/null 2>&1
3678                         if test $? -ne 0  ; then
3679                                 user_path=$user_path:$t_bindir
3680                                 AC_MSG_RESULT(Adding $t_bindir to USER_PATH so scp will work)
3681                         fi
3682                 fi
3683         fi ]
3684 )
3685 if test "x$external_path_file" != "x/etc/login.conf" ; then
3686         AC_DEFINE_UNQUOTED(USER_PATH, "$user_path", [Specify default $PATH])
3687         AC_SUBST(user_path)
3688 fi
3689
3690 # Set superuser path separately to user path
3691 AC_ARG_WITH(superuser-path,
3692         [  --with-superuser-path=  Specify different path for super-user],
3693         [
3694                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
3695                     test "x${withval}" != "xyes"; then
3696                         AC_DEFINE_UNQUOTED(SUPERUSER_PATH, "$withval",
3697                                 [Define if you want a different $PATH
3698                                 for the superuser])
3699                         superuser_path=$withval
3700                 fi
3701         ]
3702 )
3703
3704
3705 AC_MSG_CHECKING([if we need to convert IPv4 in IPv6-mapped addresses])
3706 IPV4_IN6_HACK_MSG="no"
3707 AC_ARG_WITH(4in6,
3708         [  --with-4in6             Check for and convert IPv4 in IPv6 mapped addresses],
3709         [
3710                 if test "x$withval" != "xno" ; then
3711                         AC_MSG_RESULT(yes)
3712                         AC_DEFINE(IPV4_IN_IPV6, 1,
3713                                 [Detect IPv4 in IPv6 mapped addresses
3714                                 and treat as IPv4])
3715                         IPV4_IN6_HACK_MSG="yes"
3716                 else
3717                         AC_MSG_RESULT(no)
3718                 fi
3719         ],[
3720                 if test "x$inet6_default_4in6" = "xyes"; then
3721                         AC_MSG_RESULT([yes (default)])
3722                         AC_DEFINE(IPV4_IN_IPV6)
3723                         IPV4_IN6_HACK_MSG="yes"
3724                 else
3725                         AC_MSG_RESULT([no (default)])
3726                 fi
3727         ]
3728 )
3729
3730 # Whether to enable BSD auth support
3731 BSD_AUTH_MSG=no
3732 AC_ARG_WITH(bsd-auth,
3733         [  --with-bsd-auth         Enable BSD auth support],
3734         [
3735                 if test "x$withval" != "xno" ; then
3736                         AC_DEFINE(BSD_AUTH, 1,
3737                                 [Define if you have BSD auth support])
3738                         BSD_AUTH_MSG=yes
3739                 fi
3740         ]
3741 )
3742
3743 # Where to place sshd.pid
3744 piddir=/var/run
3745 # make sure the directory exists
3746 if test ! -d $piddir ; then
3747         piddir=`eval echo ${sysconfdir}`
3748         case $piddir in
3749                 NONE/*) piddir=`echo $piddir | sed "s~NONE~$ac_default_prefix~"` ;;
3750         esac
3751 fi
3752
3753 AC_ARG_WITH(pid-dir,
3754         [  --with-pid-dir=PATH     Specify location of ssh.pid file],
3755         [
3756                 if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
3757                     test "x${withval}" != "xyes"; then
3758                         piddir=$withval
3759                         if test ! -d $piddir ; then
3760                         AC_MSG_WARN([** no $piddir directory on this system **])
3761                         fi
3762                 fi
3763         ]
3764 )
3765
3766 AC_DEFINE_UNQUOTED(_PATH_SSH_PIDDIR, "$piddir", [Specify location of ssh.pid])
3767 AC_SUBST(piddir)
3768
3769 dnl allow user to disable some login recording features
3770 AC_ARG_ENABLE(lastlog,
3771         [  --disable-lastlog       disable use of lastlog even if detected [no]],
3772         [
3773                 if test "x$enableval" = "xno" ; then
3774                         AC_DEFINE(DISABLE_LASTLOG)
3775                 fi
3776         ]
3777 )
3778 AC_ARG_ENABLE(utmp,
3779         [  --disable-utmp          disable use of utmp even if detected [no]],
3780         [
3781                 if test "x$enableval" = "xno" ; then
3782                         AC_DEFINE(DISABLE_UTMP)
3783                 fi
3784         ]
3785 )
3786 AC_ARG_ENABLE(utmpx,
3787         [  --disable-utmpx         disable use of utmpx even if detected [no]],
3788         [
3789                 if test "x$enableval" = "xno" ; then
3790                         AC_DEFINE(DISABLE_UTMPX, 1,
3791                                 [Define if you don't want to use utmpx])
3792                 fi
3793         ]
3794 )
3795 AC_ARG_ENABLE(wtmp,
3796         [  --disable-wtmp          disable use of wtmp even if detected [no]],
3797         [
3798                 if test "x$enableval" = "xno" ; then
3799                         AC_DEFINE(DISABLE_WTMP)
3800                 fi
3801         ]
3802 )
3803 AC_ARG_ENABLE(wtmpx,
3804         [  --disable-wtmpx         disable use of wtmpx even if detected [no]],
3805         [
3806                 if test "x$enableval" = "xno" ; then
3807                         AC_DEFINE(DISABLE_WTMPX, 1,
3808                                 [Define if you don't want to use wtmpx])
3809                 fi
3810         ]
3811 )
3812 AC_ARG_ENABLE(libutil,
3813         [  --disable-libutil       disable use of libutil (login() etc.) [no]],
3814         [
3815                 if test "x$enableval" = "xno" ; then
3816                         AC_DEFINE(DISABLE_LOGIN)
3817                 fi
3818         ]
3819 )
3820 AC_ARG_ENABLE(pututline,
3821         [  --disable-pututline     disable use of pututline() etc. ([uw]tmp) [no]],
3822         [
3823                 if test "x$enableval" = "xno" ; then
3824                         AC_DEFINE(DISABLE_PUTUTLINE, 1,
3825                                 [Define if you don't want to use pututline()
3826                                 etc. to write [uw]tmp])
3827                 fi
3828         ]
3829 )
3830 AC_ARG_ENABLE(pututxline,
3831         [  --disable-pututxline    disable use of pututxline() etc. ([uw]tmpx) [no]],
3832         [
3833                 if test "x$enableval" = "xno" ; then
3834                         AC_DEFINE(DISABLE_PUTUTXLINE, 1,
3835                                 [Define if you don't want to use pututxline()
3836                                 etc. to write [uw]tmpx])
3837                 fi
3838         ]
3839 )
3840 AC_ARG_WITH(lastlog,
3841   [  --with-lastlog=FILE|DIR specify lastlog location [common locations]],
3842         [
3843                 if test "x$withval" = "xno" ; then
3844                         AC_DEFINE(DISABLE_LASTLOG)
3845                 elif test -n "$withval"  &&  test "x${withval}" != "xyes"; then
3846                         conf_lastlog_location=$withval
3847                 fi
3848         ]
3849 )
3850
3851 dnl lastlog, [uw]tmpx? detection
3852 dnl  NOTE: set the paths in the platform section to avoid the
3853 dnl   need for command-line parameters
3854 dnl lastlog and [uw]tmp are subject to a file search if all else fails
3855
3856 dnl lastlog detection
3857 dnl  NOTE: the code itself will detect if lastlog is a directory
3858 AC_MSG_CHECKING([if your system defines LASTLOG_FILE])
3859 AC_TRY_COMPILE([
3860 #include <sys/types.h>
3861 #include <utmp.h>
3862 #ifdef HAVE_LASTLOG_H
3863 #  include <lastlog.h>
3864 #endif
3865 #ifdef HAVE_PATHS_H
3866 #  include <paths.h>
3867 #endif
3868 #ifdef HAVE_LOGIN_H
3869 # include <login.h>
3870 #endif
3871         ],
3872         [ char *lastlog = LASTLOG_FILE; ],
3873         [ AC_MSG_RESULT(yes) ],
3874         [
3875                 AC_MSG_RESULT(no)
3876                 AC_MSG_CHECKING([if your system defines _PATH_LASTLOG])
3877                 AC_TRY_COMPILE([
3878 #include <sys/types.h>
3879 #include <utmp.h>
3880 #ifdef HAVE_LASTLOG_H
3881 #  include <lastlog.h>
3882 #endif
3883 #ifdef HAVE_PATHS_H
3884 #  include <paths.h>
3885 #endif
3886                 ],
3887                 [ char *lastlog = _PATH_LASTLOG; ],
3888                 [ AC_MSG_RESULT(yes) ],
3889                 [
3890                         AC_MSG_RESULT(no)
3891                         system_lastlog_path=no
3892                 ])
3893         ]
3894 )
3895
3896 if test -z "$conf_lastlog_location"; then
3897         if test x"$system_lastlog_path" = x"no" ; then
3898                 for f in /var/log/lastlog /usr/adm/lastlog /var/adm/lastlog /etc/security/lastlog ; do
3899                                 if (test -d "$f" || test -f "$f") ; then
3900                                         conf_lastlog_location=$f
3901                                 fi
3902                 done
3903                 if test -z "$conf_lastlog_location"; then
3904                         AC_MSG_WARN([** Cannot find lastlog **])
3905                         dnl Don't define DISABLE_LASTLOG - that means we don't try wtmp/wtmpx
3906                 fi
3907         fi
3908 fi
3909
3910 if test -n "$conf_lastlog_location"; then
3911         AC_DEFINE_UNQUOTED(CONF_LASTLOG_FILE, "$conf_lastlog_location",
3912                 [Define if you want to specify the path to your lastlog file])
3913 fi
3914
3915 dnl utmp detection
3916 AC_MSG_CHECKING([if your system defines UTMP_FILE])
3917 AC_TRY_COMPILE([
3918 #include <sys/types.h>
3919 #include <utmp.h>
3920 #ifdef HAVE_PATHS_H
3921 #  include <paths.h>
3922 #endif
3923         ],
3924         [ char *utmp = UTMP_FILE; ],
3925         [ AC_MSG_RESULT(yes) ],
3926         [ AC_MSG_RESULT(no)
3927           system_utmp_path=no ]
3928 )
3929 if test -z "$conf_utmp_location"; then
3930         if test x"$system_utmp_path" = x"no" ; then
3931                 for f in /etc/utmp /usr/adm/utmp /var/run/utmp; do
3932                         if test -f $f ; then
3933                                 conf_utmp_location=$f
3934                         fi
3935                 done
3936                 if test -z "$conf_utmp_location"; then
3937                         AC_DEFINE(DISABLE_UTMP)
3938                 fi
3939         fi
3940 fi
3941 if test -n "$conf_utmp_location"; then
3942         AC_DEFINE_UNQUOTED(CONF_UTMP_FILE, "$conf_utmp_location",
3943                 [Define if you want to specify the path to your utmp file])
3944 fi
3945
3946 dnl wtmp detection
3947 AC_MSG_CHECKING([if your system defines WTMP_FILE])
3948 AC_TRY_COMPILE([
3949 #include <sys/types.h>
3950 #include <utmp.h>
3951 #ifdef HAVE_PATHS_H
3952 #  include <paths.h>
3953 #endif
3954         ],
3955         [ char *wtmp = WTMP_FILE; ],
3956         [ AC_MSG_RESULT(yes) ],
3957         [ AC_MSG_RESULT(no)
3958           system_wtmp_path=no ]
3959 )
3960 if test -z "$conf_wtmp_location"; then
3961         if test x"$system_wtmp_path" = x"no" ; then
3962                 for f in /usr/adm/wtmp /var/log/wtmp; do
3963                         if test -f $f ; then
3964                                 conf_wtmp_location=$f
3965                         fi
3966                 done
3967                 if test -z "$conf_wtmp_location"; then
3968                         AC_DEFINE(DISABLE_WTMP)
3969                 fi
3970         fi
3971 fi
3972 if test -n "$conf_wtmp_location"; then
3973         AC_DEFINE_UNQUOTED(CONF_WTMP_FILE, "$conf_wtmp_location",
3974                 [Define if you want to specify the path to your wtmp file])
3975 fi
3976
3977
3978 dnl utmpx detection - I don't know any system so perverse as to require
3979 dnl  utmpx, but not define UTMPX_FILE (ditto wtmpx.) No doubt it's out
3980 dnl  there, though.
3981 AC_MSG_CHECKING([if your system defines UTMPX_FILE])
3982 AC_TRY_COMPILE([
3983 #include <sys/types.h>
3984 #include <utmp.h>
3985 #ifdef HAVE_UTMPX_H
3986 #include <utmpx.h>
3987 #endif
3988 #ifdef HAVE_PATHS_H
3989 #  include <paths.h>
3990 #endif
3991         ],
3992         [ char *utmpx = UTMPX_FILE; ],
3993         [ AC_MSG_RESULT(yes) ],
3994         [ AC_MSG_RESULT(no)
3995           system_utmpx_path=no ]
3996 )
3997 if test -z "$conf_utmpx_location"; then
3998         if test x"$system_utmpx_path" = x"no" ; then
3999                 AC_DEFINE(DISABLE_UTMPX)
4000         fi
4001 else
4002         AC_DEFINE_UNQUOTED(CONF_UTMPX_FILE, "$conf_utmpx_location",
4003                 [Define if you want to specify the path to your utmpx file])
4004 fi
4005
4006 dnl wtmpx detection
4007 AC_MSG_CHECKING([if your system defines WTMPX_FILE])
4008 AC_TRY_COMPILE([
4009 #include <sys/types.h>
4010 #include <utmp.h>
4011 #ifdef HAVE_UTMPX_H
4012 #include <utmpx.h>
4013 #endif
4014 #ifdef HAVE_PATHS_H
4015 #  include <paths.h>
4016 #endif
4017         ],
4018         [ char *wtmpx = WTMPX_FILE; ],
4019         [ AC_MSG_RESULT(yes) ],
4020         [ AC_MSG_RESULT(no)
4021           system_wtmpx_path=no ]
4022 )
4023 if test -z "$conf_wtmpx_location"; then
4024         if test x"$system_wtmpx_path" = x"no" ; then
4025                 AC_DEFINE(DISABLE_WTMPX)
4026         fi
4027 else
4028         AC_DEFINE_UNQUOTED(CONF_WTMPX_FILE, "$conf_wtmpx_location",
4029                 [Define if you want to specify the path to your wtmpx file])
4030 fi
4031
4032
4033 if test ! -z "$blibpath" ; then
4034         LDFLAGS="$LDFLAGS $blibflags$blibpath"
4035         AC_MSG_WARN([Please check and edit blibpath in LDFLAGS in Makefile])
4036 fi
4037
4038 dnl Adding -Werror to CFLAGS early prevents configure tests from running.
4039 dnl Add now.
4040 CFLAGS="$CFLAGS $werror_flags"
4041
4042 AC_EXEEXT
4043 AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openssh.xml \
4044         openbsd-compat/Makefile openbsd-compat/regress/Makefile \
4045         scard/Makefile ssh_prng_cmds survey.sh])
4046 AC_OUTPUT
4047
4048 # Print summary of options
4049
4050 # Someone please show me a better way :)
4051 A=`eval echo ${prefix}` ; A=`eval echo ${A}`
4052 B=`eval echo ${bindir}` ; B=`eval echo ${B}`
4053 C=`eval echo ${sbindir}` ; C=`eval echo ${C}`
4054 D=`eval echo ${sysconfdir}` ; D=`eval echo ${D}`
4055 E=`eval echo ${libexecdir}/ssh-askpass` ; E=`eval echo ${E}`
4056 F=`eval echo ${mandir}/${mansubdir}X` ; F=`eval echo ${F}`
4057 G=`eval echo ${piddir}` ; G=`eval echo ${G}`
4058 H=`eval echo ${PRIVSEP_PATH}` ; H=`eval echo ${H}`
4059 I=`eval echo ${user_path}` ; I=`eval echo ${I}`
4060 J=`eval echo ${superuser_path}` ; J=`eval echo ${J}`
4061
4062 echo ""
4063 echo "OpenSSH has been configured with the following options:"
4064 echo "                     User binaries: $B"
4065 echo "                   System binaries: $C"
4066 echo "               Configuration files: $D"
4067 echo "                   Askpass program: $E"
4068 echo "                      Manual pages: $F"
4069 echo "                          PID file: $G"
4070 echo "  Privilege separation chroot path: $H"
4071 if test "x$external_path_file" = "x/etc/login.conf" ; then
4072 echo "   At runtime, sshd will use the path defined in $external_path_file"
4073 echo "   Make sure the path to scp is present, otherwise scp will not work"
4074 else
4075 echo "            sshd default user PATH: $I"
4076         if test ! -z "$external_path_file"; then
4077 echo "   (If PATH is set in $external_path_file it will be used instead. If"
4078 echo "   used, ensure the path to scp is present, otherwise scp will not work.)"
4079         fi
4080 fi
4081 if test ! -z "$superuser_path" ; then
4082 echo "          sshd superuser user PATH: $J"
4083 fi
4084 echo "                    Manpage format: $MANTYPE"
4085 echo "                       PAM support: $PAM_MSG"
4086 echo "                   OSF SIA support: $SIA_MSG"
4087 echo "                 KerberosV support: $KRB5_MSG"
4088 echo "                   SELinux support: $SELINUX_MSG"
4089 echo "                 Smartcard support: $SCARD_MSG"
4090 echo "                     S/KEY support: $SKEY_MSG"
4091 echo "              TCP Wrappers support: $TCPW_MSG"
4092 echo "              MD5 password support: $MD5_MSG"
4093 echo "                   libedit support: $LIBEDIT_MSG"
4094 echo "  Solaris process contract support: $SPC_MSG"
4095 echo "       IP address in \$DISPLAY hack: $DISPLAY_HACK_MSG"
4096 echo "           Translate v4 in v6 hack: $IPV4_IN6_HACK_MSG"
4097 echo "                  BSD Auth support: $BSD_AUTH_MSG"
4098 echo "              Random number source: $RAND_MSG"
4099 if test ! -z "$USE_RAND_HELPER" ; then
4100 echo "     ssh-rand-helper collects from: $RAND_HELPER_MSG"
4101 fi
4102
4103 echo ""
4104
4105 echo "              Host: ${host}"
4106 echo "          Compiler: ${CC}"
4107 echo "    Compiler flags: ${CFLAGS}"
4108 echo "Preprocessor flags: ${CPPFLAGS}"
4109 echo "      Linker flags: ${LDFLAGS}"
4110 echo "         Libraries: ${LIBS}"
4111 if test ! -z "${SSHDLIBS}"; then
4112 echo "         +for sshd: ${SSHDLIBS}"
4113 fi
4114
4115 echo ""
4116
4117 if test "x$MAKE_PACKAGE_SUPPORTED" = "xyes" ; then
4118         echo "SVR4 style packages are supported with \"make package\""
4119         echo ""
4120 fi
4121
4122 if test "x$PAM_MSG" = "xyes" ; then
4123         echo "PAM is enabled. You may need to install a PAM control file "
4124         echo "for sshd, otherwise password authentication may fail. "
4125         echo "Example PAM control files can be found in the contrib/ "
4126         echo "subdirectory"
4127         echo ""
4128 fi
4129
4130 if test ! -z "$RAND_HELPER_CMDHASH" ; then
4131         echo "WARNING: you are using the builtin random number collection "
4132         echo "service. Please read WARNING.RNG and request that your OS "
4133         echo "vendor includes kernel-based random number collection in "
4134         echo "future versions of your OS."
4135         echo ""
4136 fi
4137
4138 if test ! -z "$NO_PEERCHECK" ; then
4139         echo "WARNING: the operating system that you are using does not"
4140         echo "appear to support getpeereid(), getpeerucred() or the"
4141         echo "SO_PEERCRED getsockopt() option. These facilities are used to"
4142         echo "enforce security checks to prevent unauthorised connections to"
4143         echo "ssh-agent. Their absence increases the risk that a malicious"
4144         echo "user can connect to your agent."
4145         echo ""
4146 fi
4147
4148 if test "$AUDIT_MODULE" = "bsm" ; then
4149         echo "WARNING: BSM audit support is currently considered EXPERIMENTAL."
4150         echo "See the Solaris section in README.platform for details."
4151 fi