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Annotation of src/usr.bin/sudo/INSTALL, Revision 1.14

1.13      millert     1: Installation instructions for Sudo 1.6.7
1.3       millert     2: ========================================
1.1       millert     3:
                      4: Sudo uses a `configure' script to probe the capabilities and type
                      5: of the system in question.  In this release, `configure' takes many
                      6: more options than it did before.  Please read this document fully
                      7: before configuring and building sudo.  You may also wish to read the
                      8: file INSTALL.configure which explains more about the `configure' script.
                      9:
                     10: Simple sudo installation
                     11: ========================
                     12:
                     13: For most systems and configurations it is possible simply to:
                     14:
                     15:     0) If you are upgrading from a previous version of sudo
                     16:        please read the info in the UPGRADE file before proceeding.
                     17:
                     18:     1) If you previously ran `configure' on a different host
                     19:        you will probably want to do a `make distclean' to remove
                     20:        the old `config.cache' file.  Otherwise, `configure'
                     21:        will complain and refuse to run.  Alternately, one can
                     22:        simply `rm config.cache'.
                     23:
                     24:     2) Read the `OS dependent notes' section for any particular
                     25:        "gotchas" relating to your operating system.
                     26:
                     27:     3) `cd' to the source or build directory and type `./configure'
                     28:        to generate a Makefile and config.h file suitable for
                     29:        building sudo.  Before you actually run configure you
                     30:        should read the `Available configure options' section
                     31:        to see if there are any special options you may want
1.7       millert    32:        or need.
1.1       millert    33:
                     34:     4) Edit the configure-generated Makefile if you wish to
                     35:        change any of the default paths (alternately you could
                     36:        have changed the paths via options to `configure'.
                     37:
                     38:     5) Type `make' to compile sudo.  If you are building sudo
                     39:        in a separate build tree (apart from the sudo source)
                     40:        GNU make will probably be required.  If `configure' did
                     41:        its job properly (and you have a supported configuration)
                     42:        there won't be any problems.  If this doesn't work, take
                     43:        a look at the files TROUBLESHOOTING and PORTING for tips
                     44:        on what might have gone wrong.  Please mail us if you have a
                     45:        fix or if you are unable to come up with a fix (address at EOF).
                     46:
                     47:     6) Type `make install' (as root) to install sudo, visudo, the
                     48:        man pages, and a skeleton sudoers file.  Note that the install
                     49:        will not overwrite an existing sudoers file.  You can also
                     50:        install various pieces the package via the install-binaries,
                     51:        install-man, and install-sudoers make targets.
                     52:
                     53:     7) Edit the sudoers file with `visudo' as necessary for your
                     54:        site.  You will probably want to refer the sample.sudoers
                     55:        file and sudoers man page included with the sudo package.
                     56:
                     57:     8) If you want to use syslogd(8) to do the logging, you'll need
                     58:        to update your /etc/syslog.conf file.  See the sample.syslog.conf
                     59:        file included in the distribution for an example.
                     60:
                     61: Available configure options
                     62: ===========================
                     63:
                     64: This section describes flags accepted by the sudo's `configure' script.
                     65: Defaults are listed in brackets after the description.
                     66:
                     67: Configuration:
                     68:   --cache-file=FILE
                     69:        Cache test results in FILE
                     70:
1.9       millert    71:   --config-cache, -C
                     72:        Alias for `--cache-file=config.cache'
                     73:
                     74:   --help, -h
1.1       millert    75:        Print the usage/help info
                     76:
1.9       millert    77:   --no-create, -n
1.1       millert    78:        Do not create output files
                     79:
1.9       millert    80:   --quiet, --silent, -q
1.1       millert    81:        Do not print `checking...' messages
                     82:
                     83: Directory and file names:
                     84:   --prefix=PREFIX
                     85:        Install architecture-independent files in PREFIX This really only
                     86:        applies to man pages.  [/usr/local]
                     87:
                     88:   --exec-prefix=EPREFIX
                     89:        Install architecture-dependent files in EPREFIX This includes the
                     90:        sudo and visudo executables.  [same as prefix]
                     91:
                     92:   --bindir=DIR
                     93:        Install `sudo' in DIR [EPREFIX/bin]
                     94:
                     95:   --sbindir=DIR
                     96:        Install `visudo' in DIR [EPREFIX/sbin]
                     97:
                     98:   --sysconfdir=DIR
                     99:        Install `sudoers' file in DIR [/etc]
                    100:
                    101:   --mandir=DIR
                    102:        Install man pages in DIR [PREFIX/man]
                    103:
                    104:   --srcdir=DIR
                    105:        Find the sources in DIR [configure dir or ..]
                    106:
                    107: Special features/options:
1.12      millert   108:   --with-CC=PATH
1.1       millert   109:        Specifies path to C compiler you wish to use.
                    110:
1.12      millert   111:   --with-incpath=DIR
                    112:         Adds the specified directory (or directories) to CPPFLAGS
                    113:         so configure and the compiler will look there for include
                    114:         files.  Multiple directories may be specified as long as
                    115:         they are space separated.
1.1       millert   116:        Eg: --with-incpath="/usr/local/include /opt/include"
                    117:
1.12      millert   118:   --with-libpath=DIR
1.14    ! millert   119:         Adds the specified directory (or directories) to LDFLAGS
        !           120:         so configure and the compiler will look there for libraries.
        !           121:         Multiple directories may be specified as with --with-incpath.
        !           122:
        !           123:   --with-rpath
        !           124:        Tells configure to use -Rpath in addition to -Lpath when
        !           125:        passing library paths to the loader.  This option is on
        !           126:        by default for Solaris and SVR4.
        !           127:
        !           128:   --with-blibpath[=PATH]
        !           129:         Tells configure to construct a -blibpath argument to the
        !           130:         loader.  If a PATH is specified, it will be used as the
        !           131:         base.  Otherwise, "/usr/lib:/lib:/usr/local/lib" will be
        !           132:         used for gcc and "/usr/lib:/lib" for non-gcc.  Additional
        !           133:         library paths will be appended as needed by configure.
        !           134:        This option is only valid for AIX where it is on by default.
1.12      millert   135:
                    136:   --with-libraries=LIBRARY
                    137:         Adds the specified library (or libaries) to SUDO_LIBS and
                    138:         and VISUDO_LIBS so sudo will link against them.  If the
                    139:         library doesn't start with `-l' or end in `.a' or `.o' a
                    140:         `-l' will be prepended to it.  Multiple libraries may be
                    141:         specified as long as they are space separated.
1.1       millert   142:
                    143:   --with-csops
                    144:        Add CSOps standard options.  You probably aren't interested in this.
                    145:
1.14    ! millert   146:   --with-skey[=DIR]
        !           147:         Enable S/Key OTP (One Time Password) support.  If specified,
        !           148:         DIR should contain include and lib directories with skey.h
        !           149:         and libskey.a respectively.
        !           150:
        !           151:   --with-opie[=DIR]
        !           152:        Enable NRL OPIE OTP (One Time Password) support.  If specified,
        !           153:        DIR should contain include and lib directories with opie.h
        !           154:        and libopie.a respectively.
1.1       millert   155:
1.12      millert   156:   --with-SecurID[=DIR]
1.1       millert   157:        Enable SecurID support.  If specified, DIR is directory containing
                    158:        sdiclient.a, sdi_athd.h, sdconf.h, and sdacmvls.h.
                    159:
1.12      millert   160:   --with-fwtk[=DIR]
1.1       millert   161:        Enable TIS Firewall Toolkit (FWTK) 'authsrv' support. If specified,
                    162:        DIR is the base directory containing the compiled FWTK package
                    163:        (or at least the library and header files).
                    164:
1.14    ! millert   165:   --with-kerb4[=DIR]
        !           166:         Enable Kerberos IV support.  If specified, DIR is the base
        !           167:         directory containing the Kerberos IV include and lib dirs.
        !           168:         This uses Kerberos passphrases for authentication but does
        !           169:         not use the Kerberos cookie scheme.
        !           170:
        !           171:   --with-kerb5[=DIR]
        !           172:         Enable Kerberos V support.  If specified, DIR is the base
        !           173:         directory containing the Kerberos V include and lib dirs.
        !           174:         This This uses Kerberos passphrases for authentication but
        !           175:         does not use the Kerberos cookie scheme.  Will not work for
        !           176:         Kerberos V older than version 1.1.
1.1       millert   177:
                    178:   --with-authenticate
                    179:        Enable support for the AIX 4.x general authentication function.
                    180:        This will use the authentication scheme specified for the user
                    181:        on the machine.
                    182:
                    183:   --with-pam
1.4       millert   184:        Enable PAM support.  Tested on:
                    185:            Redhat Linux 5.x, 6.0, and 6.1
                    186:            Solaris 2.6 and 7
                    187:            HP-UX 11.0
                    188:         NOTE: on RedHat Linux you *must* install an /etc/pam.d/sudo file.
                    189:        You may either use the sample.pam file included with sudo or use
                    190:        /etc/pam.d/su as a reference.  On Solaris and HP-UX 11 systems
                    191:        you should check (and understand) the contents of /etc/pam.conf.
                    192:        Do a "man pam.conf" for more information and consider using the
                    193:        "debug" option, if available, with your PAM libraries in
                    194:        /etc/pam.conf to obtain syslog output for debugging purposes.
1.1       millert   195:
                    196:   --with-AFS
1.13      millert   197:        Enable AFS support with Kerberos authentication.  Should work under
1.1       millert   198:        AFS 3.3.  If your AFS doesn't have -laudit you should be able to
                    199:        link without it.
                    200:
                    201:   --with-DCE
1.4       millert   202:        Enable DCE support.  Known to work on HP-UX 9.X, 10.X, and 11.0.
                    203:        The use of PAM is recommended for HP-UX 11.X systems, since PAM is
                    204:        fully implemented (this is not true for 10.20 and earlier versions).
                    205:        Check to see that your 11.X (or other) system uses DCE via PAM by
                    206:        looking at /etc/pam.conf to see if "libpam_dce" libraries are
                    207:        referenced there.  Other platforms may require source code and/or
                    208:        `configure' changes; you should check to see if your platform can
                    209:        access DCE via PAM before using this option.
1.1       millert   210:
1.5       millert   211:   --with-logincap
1.6       millert   212:        Enable support for BSD login classes where available (OS-dependent).
                    213:        This adds support for the login classes specified in /etc/login.conf.
1.5       millert   214:        By default, a login class is not applied unless the 'use_loginclass'
                    215:        option is defined in sudoers or the user specifies a class on the
1.6       millert   216:        command line.
                    217:
                    218:   --with-bsdauth
1.9       millert   219:         Enable support for BSD authentication on BSD/OS and OpenBSD.
1.12      millert   220:         This option implies --with-logincap.  It is not possible
                    221:         to mix BSD authentication with other authentication methods
                    222:         (and there really should be no need to do so).  Note that
                    223:         only the newer BSD authentication API is supported.  If you
                    224:         don't have /usr/include/bsd_auth.h then you cannot use this.
1.10      millert   225:
                    226:   --disable-root-mailer
                    227:         By default sudo will run the mailer as root when tattling
                    228:         on a user so as to prevent that user from killing the mailer.
                    229:         With this option, sudo will run the mailer as the invoking
                    230:         user which some people consider to be safer.
1.9       millert   231:
                    232:   --disable-saved-ids
1.12      millert   233:         Disable use of POSIX saved IDs.  Normally, sudo will try
                    234:         to use POSIX saved IDs if they are supported.  However,
                    235:         some implementations are broken.
1.11      millert   236:
                    237:   --disable-setreuid
1.12      millert   238:         Disable use of the setreuid() function for operating systems
                    239:         where it is broken.  4.4BSD has setreuid() but it doesn't
                    240:         really work.
1.5       millert   241:
1.13      millert   242:   --disable-setresuid
                    243:         Disable use of the setresuid() function for operating systems
                    244:         where it is broken (none currently known).
                    245:
1.1       millert   246:   --disable-sia
1.12      millert   247:         Disable SIA support.  This is the "Security Integration
                    248:         Architecture" on Digital UNIX. If you disable SIA sudo will
                    249:         use its own authentication routines.
1.1       millert   250:
                    251:   --disable-shadow
1.12      millert   252:         Disable shadow password support.  Normally, sudo will compile
                    253:         in shadow password support and use a shadow password if it
                    254:         exists.
                    255:
                    256:   --with-sudoers-mode=MODE
                    257:         File mode for the sudoers file (octal).  Note that if you
                    258:         wish to NFS-mount the sudoers file this must be group
                    259:         readable.  Also note that this is actually set in the
                    260:         Makefile.  The default mode is 0440.
                    261:
                    262:   --with-sudoers-uid=UID
                    263:         User id that "owns" the sudoers file.  Note that this is
                    264:         the numeric id, *not* the symbolic name.  Also note that
                    265:         this is actually set in the Makefile.  The default is 0.
                    266:
                    267:   --with-sudoers-gid=GID
                    268:         Group id that "owns" the sudoers file.  Note that this is
                    269:         the numeric id, *not* the symbolic name.  Also note that
                    270:         this is actually set in the Makefile.  The default is 0.
1.1       millert   271:
                    272:   --with-execv
                    273:        Use execv() to exec the command instead of execvp().  I can't think of
                    274:        a reason to actually do this since execvp() is passed a fully qualified
                    275:        pathname but someone might thoroughly distrust execvp().  Note that if
                    276:        you define this you lose the ability to exec scripts that are missing
                    277:        the '#!/bin/sh' cookie (like /bin/kill on SunOS and /etc/fastboot on
                    278:        4.3BSD).  This is off by default.
                    279:
                    280:   --without-interfaces
1.12      millert   281:         This option keeps sudo from trying to glean the ip address
                    282:         from each attached ethernet interface.  It is only useful
                    283:         on a machine where sudo's interface reading support does
                    284:         not work, which may be the case on some SysV-based OS's
                    285:         using STREAMS.
1.1       millert   286:
                    287:   --without-passwd
1.12      millert   288:         This option excludes authentication via the passwd (or
                    289:         shadow) file.  It should only be used when another, alternate,
                    290:         authentication scheme is in use.
1.1       millert   291:
                    292:   --with-otp-only
1.12      millert   293:         This option is now just an alias for --without-passwd.
1.13      millert   294:
                    295:   --with-stow
                    296:         Properly handle GNU stow packaging.  The sudoers file will
                    297:         physically live in ${prefix}/etc and /etc/sudoers will be
                    298:         a symbolic link.
1.1       millert   299:
1.4       millert   300: The following options are also configurable at runtime:
                    301:
1.1       millert   302:   --with-long-otp-prompt
1.12      millert   303:         When validating with a One Time Password scheme (S/Key or
                    304:         OPIE), a two-line prompt is used to make it easier to cut
                    305:         and paste the challenge to a local window.  It's not as
                    306:         pretty as the default but some people find it more convenient.
1.1       millert   307:
                    308:   --with-logging=TYPE
1.12      millert   309:         How you want to do your logging.  You may choose "syslog",
                    310:         "file", or "both".  Setting this to "syslog" is nice because
                    311:         you can keep all of your sudo logs in one place (see the
                    312:         sample.syslog.conf file).  The default is "syslog".
1.1       millert   313:
                    314:   --with-logfac=FACILITY
1.12      millert   315:         Determines which syslog facility to log to.  This requires
                    316:         a 4.3BSD or later version of syslog.  You can still set
                    317:         this for ancient syslogs but it will have no effect.  The
                    318:         following facilities are supported: authpriv (if your OS
                    319:         supports it), auth, daemon, user, local0, local1, local2,
                    320:         local3, local4, local5, local6, and local7.
1.1       millert   321:
                    322:   --with-goodpri=PRIORITY
1.12      millert   323:         Determines which syslog priority to log successfully
                    324:         authenticated commands.  The following priorities are
                    325:         supported: alert, crit, debug, emerg, err, info, notice,
                    326:         and warning.
1.1       millert   327:
                    328:   --with-badpri=PRIORITY
1.12      millert   329:         Determines which syslog priority to log unauthenticated
                    330:         commands and errors.  The following priorities are supported:
                    331:         alert, crit, debug, emerg, err, info, notice, and warning.
                    332:
                    333:   --with-logpath=PATH
                    334:         Override the default location of the sudo log file and use
                    335:         "path" instead.  By default will use /var/log/sudo.log if
                    336:         there is a /var/log dir, falling back to /var/adm/sudo.log
                    337:         or /usr/adm/sudo.log if not.
1.1       millert   338:
1.12      millert   339:   --with-loglen=NUMBER
1.1       millert   340:        Number of characters per line for the file log.  This is only used if
                    341:        you are to "file" or "both".  This value is used to decide when to wrap
                    342:        lines for nicer log files.  The default is 80.  Setting this to 0
                    343:        will disable the wrapping.
                    344:
                    345:   --with-ignore-dot
                    346:        If set, sudo will ignore '.' or '' (current dir) in $PATH.
                    347:        The $PATH itself is not modified.
                    348:
1.12      millert   349:   --with-mailto=USER|MAIL_ALIAS
                    350:        User (or mail alias) that mail from sudo is sent to.
                    351:        This should go to a sysadmin at your site.  The default is "root".
1.1       millert   352:
1.12      millert   353:   --with-mailsubject="SUBJECT OF MAIL"
1.1       millert   354:        Subject of the mail sent to the "mailto" user. The token "%h"
                    355:        will expand to the hostname of the machine.
                    356:        Default is "*** SECURITY information for %h ***".
                    357:
                    358:   --without-mail-if-no-user
1.4       millert   359:        Normally, sudo will mail to the "alertmail" user if the user invoking
1.1       millert   360:        sudo is not in the sudoers file.  This option disables that behavior.
                    361:
                    362:   --with-mail-if-no-host
                    363:        Send mail to the "alermail" user if the user exists in the sudoers
                    364:        file, but is not allowed to run commands on the current host.
                    365:
                    366:   --with-mail-if-noperms
                    367:        Send mail to the "alermail" user if the user is allowed to use sudo but
                    368:        the command they are trying is not listed in their sudoers file entry.
                    369:
1.12      millert   370:   --with-passprompt="PASSWORD PROMPT"
1.1       millert   371:        Default prompt to use when asking for a password; can be overridden
                    372:        via the -p option and the SUDO_PROMPT environment variable. Supports
                    373:        two escapes: "%u" expands to the user's login name and "%h" expands
                    374:        to the local hostname.  Default is "Password:".
                    375:
1.12      millert   376:   --with-badpass-message="BAD PASSWORD MESSAGE"
1.1       millert   377:        Message that is displayed if a user enters an incorrect password.
                    378:        The default is "Sorry, try again." unless insults are turned on.
                    379:
                    380:   --with-fqdn
                    381:         Define this if you want to put fully qualified hostnames in the sudoers
                    382:        file.  Ie: instead of myhost you would use myhost.mydomain.edu.  You may
                    383:        still use the short form if you wish (and even mix the two).  Beware
                    384:        that turning FQDN on requires sudo to make DNS lookups which may make
                    385:        sudo unusable if your DNS is totally hosed.  Also note that you must
                    386:        use the host's official name as DNS knows it.  That is, you may not use
                    387:        a host alias (CNAME entry) due to performance issues and the fact that
                    388:        there is no way to get all aliases from DNS.
                    389:
1.12      millert   390:   --with-timedir=PATH
1.1       millert   391:        Override the default location of the sudo timestamp directory and
                    392:        use "path" instead.
                    393:
1.12      millert   394:   --with-sendmail=PATH
1.1       millert   395:        Override configure's guess as to the location of sendmail.
                    396:
                    397:   --without-sendmail
                    398:        Do not use sendmail to mail messages to the "mailto" user.
                    399:        Use only if don't run sendmail or the equivalent.
                    400:
1.12      millert   401:   --with-umask=MASK
1.1       millert   402:        Umask to use when running the root command.  The default is 0022.
                    403:
                    404:   --without-umask
                    405:        Preserves the umask of the user invoking sudo.
                    406:
1.12      millert   407:   --with-runas-default=USER
1.1       millert   408:        The default user to run commands as if the -u flag is not specified
                    409:        on the command line.  This defaults to "root".
                    410:
1.12      millert   411:   --with-exempt=GROUP
1.1       millert   412:        Users in the specified group don't need to enter a password when
                    413:        running sudo.  This may be useful for sites that don't want their
                    414:        "core" sysadmins to have to enter a password but where Jr. sysadmins
                    415:        need to.  You should probably use NOPASSWD in sudoers instead.
                    416:
1.12      millert   417:   --with-passwd-tries=NUMBER
1.1       millert   418:        Number of tries a user gets to enter his/her password before sudo logs
                    419:        the failure and exits.  The default is 3.
                    420:
1.12      millert   421:   --with-timeout=NUMBER
1.1       millert   422:        Number of minutes that can elapse before sudo will ask for a passwd
                    423:        again.  The default is 5, set this to 0 to always prompt for a password.
                    424:
1.12      millert   425:   --with-password-timeout=NUMBER
1.1       millert   426:        Number of minutes before the sudo password prompt times out.
                    427:        The default is 5, set this to 0 for no password timeout.
                    428:
                    429:   --with-tty-tickets
1.4       millert   430:        This makes sudo use a different ticket file for each user/tty combo.
                    431:        Ie: instead of the ticket path being "username" it is "username/tty".
1.1       millert   432:        This is useful for "shared" accounts like "operator".  Note that this
                    433:        means that there will be more files in the timestamp dir.  This is not
                    434:        a problem if your system has a cron job to remove of files from /tmp
                    435:        (or wherever you specified the timestamp dir to be).
                    436:
                    437:   --with-insults
                    438:        Define this if you want to be insulted for typing an incorrect password
                    439:        just like the original sudo(8).  This is off by default.
                    440:
                    441:   --with-all-insults
1.7       millert   442:        Include all the insult sets listed below.  You must either specify
                    443:        --with-insults or enable insults in the sudoers file for this to
                    444:        have any effect.
1.1       millert   445:
                    446:   --with-classic-insults
                    447:        Uses insults from sudo "classic."  If you just specify --with-insults
                    448:        you will get the classic and CSOps insults.  This is on by default if
                    449:        --with-insults is given.
                    450:
                    451:   --with-csops-insults
                    452:        Insults the user with an extra set of insults (some quotes, some
                    453:        original) from a sysadmin group at CU (CSOps).  You must specify
                    454:        --with-insults as well for this to have any effect.  This is on by
                    455:        default if --with-insults is given.
                    456:
                    457:   --with-hal-insults
                    458:        Uses 2001-like insults when an incorrect password is entered.
1.7       millert   459:        You must either specify --with-insults or enable insults in the
                    460:        sudoers file for this to have any effect.
1.1       millert   461:
                    462:   --with-goons-insults
                    463:        Insults the user with lines from the "Goon Show" when an incorrect
1.7       millert   464:        password is entered.  You must either specify --with-insults or
                    465:        enable insults in the sudoers file for this to have any effect.
1.1       millert   466:
1.12      millert   467:   --with-secure-path[=PATH]
1.1       millert   468:        Path used for every command run from sudo(8).  If you don't trust the
                    469:        people running sudo to have a sane PATH environment variable you may
                    470:        want to use this.  Another use is if you want to have the "root path"
                    471:        be separate from the "user path."  You will need to customize the path
                    472:        for your site.  NOTE: this is not applied to users in the group
                    473:        specified by --with-exemptgroup.  If you do not specify a path,
                    474:        "/bin:/usr/ucb:/usr/bin:/usr/sbin:/sbin:/usr/etc:/etc" is used.
                    475:
                    476:   --without-lecture
                    477:        Don't print the lecture the first time a user runs sudo.
                    478:
1.12      millert   479:   --with-editor=PATH
1.7       millert   480:        Specify the default editor path for use by visudo.  This may be
                    481:        a single pathname or a colon-separated list of editors.  In
                    482:        the latter case, visudo will choose the editor that matches
                    483:        the user's USER environment variable or the first editor in
                    484:        the list that exists.  The default is the path to vi on your system.
1.5       millert   485:
                    486:   --with-env-editor
                    487:        Makes visudo consult the EDITOR and VISUAL environment variables before
1.7       millert   488:        falling back on the default editor list (as specified by --with-editor).
                    489:        Note that this may create a security hole as it allows the user to
                    490:        run any arbitrary command as root without logging.  A safer alternative
                    491:        is to use a colon-separated list of editors with the --with-env-editor
                    492:        option.  visudo will then only use the EDITOR or VISUAL if they match
                    493:        a value specified via --with-editor.
1.5       millert   494:
1.1       millert   495:   --disable-authentication
                    496:         By default, sudo requires the user to authenticate via a
                    497:         password or similar means.  This options causes sudo to
                    498:         *not* require authentication.  It is possible to turn
                    499:         authentication back on in sudoers via the PASSWD attribute.
                    500:
                    501:   --disable-root-sudo
                    502:        Don't let root run sudo.  This can be used to prevent people from
                    503:        "chaining" sudo commands to get a root shell by doing something
                    504:        like "sudo sudo /bin/sh".
                    505:
                    506:   --enable-log-host
                    507:        Log the hostname in the log file.
1.3       millert   508:
                    509:   --enable-noargs-shell
                    510:        If sudo is invoked with no arguments it acts as if the "-s" flag had
                    511:        been given.  That is, it runs a shell as root (the shell is determined
                    512:        by the SHELL environment variable, falling back on the shell listed
                    513:        in the invoking user's /etc/passwd entry).
1.1       millert   514:
                    515:   --enable-shell-sets-home
                    516:        If sudo is invoked with the "-s" flag the HOME environment variable
                    517:        will be set to the home directory of the target user (which is root
                    518:        unless the "-u" option is used).  This option effectively makes the
                    519:        "-s" flag imply "-H".
                    520:
                    521:   --disable-path-info
                    522:        Normally, sudo will tell the user when a command could not be found
                    523:        in their $PATH.  Some sites may wish to disable this as it could
                    524:        be used to gather information on the location of executables that
                    525:        the normal user does not have access to.  The disadvantage is that
                    526:        if the executable is simply not in the user's path, sudo will tell
                    527:        the user that they are not allowed to run it, which can be confusing.
                    528:
                    529: Shadow password and C2 support
                    530: ==============================
                    531:
                    532: Shadow passwords (also included with most C2 security packages) are
                    533: supported on most major platforms for which they exist.  The
                    534: `configure' script will attempt to determine if your system can use
                    535: shadow passwords and include support for them if so.  Shadow password
                    536: support is now compiled in by default (it doesn't hurt anything if you
                    537: don't have them configured).  To disable the shadow password support,
                    538: use the --disable-shadow option to configure.
                    539:
                    540: Shadow passwords are known to work on the following platforms:
                    541:
                    542:     SunOS 4.x
                    543:     Solaris 2.x
                    544:     HP-UX >= 9.x
                    545:     Ultrix 4.x
                    546:     Digital UNIX
                    547:     IRIX >= 5.x
                    548:     AIX >= 3.2.x
                    549:     ConvexOS with C2 security (not tested recently)
                    550:     Linux
                    551:     SCO >= 3.2.2
                    552:     Pyramid DC/OSx
                    553:     UnixWare
                    554:     SVR4 (and variants using standard SVR4 shadow passwords)
                    555:     4.4BSD based systems (including OpenBSD, NetBSD, FreeBSD, and BSD/OS)
                    556:     OS's using SecureWare's C2 security.
                    557:
                    558: OS dependent notes
                    559: ==================
                    560:
                    561: OpenBSD < 2.2 and NetBSD < 1.2.1:
                    562:     The fdesc filesystem has a bug wrt /dev/tty handling that
                    563:     causes sudo to hang at the password prompt.  The workaround
                    564:     is to run configure with --with-password-timeout=0
                    565:
                    566: Solaris 2.x:
                    567:     You need to have a C compiler in order to build sudo.
                    568:     Since Solaris 2.x does not come with one by default this
                    569:     means that you either need to have purchased the unbundled Sun
                    570:     C compiler or have a copy of the GNU C compiler (gcc).
                    571:     The SunSoft Catalyst CD should contain gcc binaries for
                    572:     Solaris.  You can also get them from various places on the
                    573:     net, including http://www.sunfreeware.com/
                    574:     NOTE: sudo will *not* build with the sun C compiler in BSD
                    575:           compatibility mode (/usr/ucb/cc).  Sudo is designed to
                    576:           compile with the standard C compiler (or gcc) and will
                    577:           not build correctly with /usr/ucb/cc.  You can use the
                    578:           `--with-CC' option to point `configure' to the non-ucb
                    579:           compiler if it is not the first cc in your path.  Some
                    580:           sites link /usr/ucb/cc to gcc; configure will not notice
                    581:           this an still refuse to use /usr/ucb/cc, so make sure gcc
                    582:           is also in your path if your site is setup this way.
                    583:     Also: Many versions of Solaris come with a broken syslogd.
                    584:          If you have having problems with sudo logging you should
                    585:          make sure you have the latest syslogd patch installed.
                    586:          This is a problem for Solaris 2.4 and 2.5 at least.
                    587:
                    588: AIX 3.2.x:
                    589:     I've had various problems with the AIX C compiler producing
                    590:     incorrect code when the -O flag was used.  When optimization
                    591:     is not used, the problems go away.  Gcc does not appear
                    592:     to have this problem.
                    593:
                    594:     Also, the AIX 3.2.x lex will not work with sudo's parse.lex.
                    595:     This should not be a problem as sudo comes shipped with
                    596:     a pre-generated lex.yy.c (created by flex).  If you want
                    597:     to modify the lex tokenizer, make sure you grab a copy of
                    598:     flex from ftp.ee.lbl.gov (also available on most GNU mirrors)
                    599:     and sudo will use that instead.
                    600:
                    601: Ultrix 4.x:
                    602:     Ultrix still ships with the 4.2BSD syslog(3) which does not
                    603:     allow things like logging different facilities to different
                    604:     files, redirecting logs to a single loghost and other niceties.
                    605:     You may want to just grab and install:
                    606:        ftp://gatekeeper.dec.com/pub/DEC/jtkohl-syslog-complete.tar.Z
                    607:     (available via anonymous ftp) which is a port if the 4.3BSD
                    608:     syslog/syslogd that is backwards compatible with the Ultrix version.
                    609:     I recommend it highly.  If you do not do this you probably want
                    610:     to run configure with --with-logging=file
                    611:
                    612: Digital UNIX:
                    613:     By default, sudo will use SIA (Security Integration Architecture)
                    614:     to validate a user.  If you want to use an alternate authentication
                    615:     method that does not go through SIA, you need to use the
                    616:     --disable-sia option to configure.  If you use gcc to compile
                    617:     you will get warnings when building interfaces.c.  These are
                    618:     harmless but if they really bug you, you can edit
                    619:     /usr/include/net/if.h around line 123, right after the comment:
                    620:        /* forward decls for C++ */
                    621:     change the line:
                    622:        #ifdef __cplusplus
                    623:     to:
                    624:        #if defined(__cplusplus) || defined(__GNUC__)
                    625:     If you don't like the idea of editing the system header file
                    626:     you can just make a copy in gcc's private include tree and
                    627:     edit that.
                    628:
                    629: Linux:
                    630:     NOTE: Reportedly, Linux's execvp(3) doesn't always execute
                    631:          scripts that lack the "#!/some/shell" header correctly.
                    632:          The workaround is to give all your scripts a proper
                    633:          header.
                    634:     Versions of glibc 2.x previous to 2.0.7 have a broken lsearch().
                    635:     You will need to either upgrade to glibc-2.0.7 or use sudo's
                    636:     version of lsearch().  To use sudo's lsearch(), comment out
                    637:     the "#define HAVE_LSEARCH 1" line in config.h and add lsearch.o
                    638:     to the LIBOBJS line in the Makefile.
                    639:
1.9       millert   640:     If you are using a Linux kernel older than 2.4 it is not possible
                    641:     to access the sudoers file via NFS.  This is due to a bug in
                    642:     the Linux client-side NFS implementation that has since been
                    643:     fixed.  There is a workaround on the sudo ftp site, linux_nfs.patch,
                    644:     if you need to NFS-mount sudoers on older Linux kernels.
1.11      millert   645:
                    646:     Linux kernels 2.2.16-2.2.19 appear to have broken POSIX saved
                    647:     ID support.  You must run configure with the --disable-saved-ids
                    648:     flag to get a working sudo.
1.1       millert   649:
                    650: Mac OS X:
                    651:     It has been reported that for sudo to work on Mac OS X it must
                    652:     either be built with the --with-password-timeout=0 option or the
                    653:     password timeout must be disabled in the Defaults line in the
                    654:     sudoers file.  If sudo just hangs when you try to enter a password,
                    655:     you need to disable the password timeout (Note: this is not a bug
                    656:     in sudo).
                    657:
                    658: SCO ODT:
                    659:     You'll probably need libcrypt_i.a available via anonymous ftp
                    660:     from sosco.sco.com.  The necessary files are /SLS/lng225b.Z
                    661:     and /SLS/lng225b.ltr.Z.
1.5       millert   662:
                    663: Dynix:
                    664:     Some people have experienced problems building sudo with gcc
                    665:     on Dynix.  If you experience problems compiling sudo using gcc
                    666:     on Dynix, try using the native compiler (cc).  You can do so
                    667:     by removing the config.cache file and then re-running configure
                    668:     with the --with-CC=cc option.