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Annotation of src/usr.bin/sudo/INSTALL, Revision 1.17

1.16      millert     1: Installation instructions for Sudo 1.6.9
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
1.16      millert    35:        change any of the default paths (alternatively, you could
1.1       millert    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
1.16      millert   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
1.16      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.
1.14      millert   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]
1.16      millert   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.
1.14      millert   134:        This option is only valid for AIX where it is on by default.
1.12      millert   135:
                    136:   --with-libraries=LIBRARY
1.16      millert   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]
1.16      millert   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.
1.14      millert   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]
1.16      millert   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.
1.14      millert   170:
                    171:   --with-kerb5[=DIR]
1.16      millert   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:
1.15      millert   178:   --with-ldap[=DIR]
                    179:        Enable LDAP support.  If specified, DIR is the base directory
                    180:        containing the LDAP include and lib directories.  Please see
                    181:        README.LDAP for more information.
                    182:
1.16      millert   183:   --with-ldap-conf-file=filename
1.15      millert   184:        Path to LDAP configuration file.  If specified, sudo reads
                    185:        this file instead of /etc/ldap.conf to locate the LDAP server.
                    186:
1.16      millert   187:   --with-ldap-secret-file=filename
                    188:        Path to LDAP secret password file.  If specified, sudo uses
                    189:        this file instead of /etc/ldap.secret to read the secret password
                    190:        when rootbinddn is specified in the ldap config file.
                    191:
                    192:   --with-aixauth
1.1       millert   193:        Enable support for the AIX 4.x general authentication function.
                    194:        This will use the authentication scheme specified for the user
1.16      millert   195:        on the machine.  It is on by default for AIX systems that
                    196:        support it.
1.1       millert   197:
                    198:   --with-pam
1.16      millert   199:        Enable PAM support.  This is on by default for Darwin, FreeBSD,
                    200:        Linux, Solaris and HP-UX (version 11 and higher).
                    201:
                    202:        NOTE: on RedHat Linux and Fedora you *must* have an /etc/pam.d/sudo
                    203:        file installed.  You may either use the sample.pam file included with
1.15      millert   204:        sudo or use /etc/pam.d/su as a reference.  The sample.pam file
                    205:        included with sudo may or may not work with other Linux distributions.
                    206:        On Solaris and HP-UX 11 systems you should check (and understand)
                    207:        the contents of /etc/pam.conf.  Do a "man pam.conf" for more
                    208:        information and consider using the "debug" option, if available,
                    209:        with your PAM libraries in /etc/pam.conf to obtain syslog output
                    210:        for debugging purposes.
1.1       millert   211:
                    212:   --with-AFS
1.13      millert   213:        Enable AFS support with Kerberos authentication.  Should work under
1.1       millert   214:        AFS 3.3.  If your AFS doesn't have -laudit you should be able to
                    215:        link without it.
                    216:
                    217:   --with-DCE
1.15      millert   218:        Enable DCE support for systems without PAM.  Known to work on
                    219:        HP-UX 9.X, 10.X, and 11.0; other systems may require source
                    220:        code and/or `configure' changes.  On systems with PAM support
                    221:        (such as HP-UX 11.0 and higher, Solaris, FreeBSD and Linux), the
                    222:        DCE PAM module (usually libpam_dce) should be used instead.
1.1       millert   223:
1.5       millert   224:   --with-logincap
1.16      millert   225:        This adds support for login classes specified in /etc/login.conf.
                    226:        It is enabled by default on BSD/OS, Darwin, FreeBSD, OpenBSD and
                    227:        NetBSD (where available).  By default, a login class is not applied
                    228:        unless the 'use_loginclass' option is defined in sudoers or the user
                    229:        specifies a class on the command line.
                    230:
                    231:   --with-project
                    232:          Enable support for Solaris project resource limits.
                    233:          This option is only available on Solaris 9 and above.
1.6       millert   234:
                    235:   --with-bsdauth
1.16      millert   236:        Enable support for BSD authentication.  This is the default
                    237:        for BSD/OS and OpenBSD systems that support it.
                    238:        It is not possible to mix BSD authentication with other
                    239:        authentication methods (and there really should be no need
                    240:        to do so).  Note that only the newer BSD authentication API
                    241:        is supported.  If you don't have /usr/include/bsd_auth.h
                    242:        then you cannot use this.
1.10      millert   243:
1.15      millert   244:   --with-noexec[=PATH]
1.16      millert   245:        Enable support for the "noexec" functionality which prevents
                    246:        a dynamically-linked program being run by sudo from executing
                    247:        another program (think shell escapes).  Please see the
                    248:        "PREVENTING SHELL ESCAPES" section in the sudoers man page
                    249:        for details.  If specified, PATH should be a fully qualified
                    250:        pathname, e.g. /usr/local/libexec/sudo_noexec.so.  If PATH
                    251:        is "no", noexec support will not be compiled in.  The default
                    252:        is to compile noexec support if libtool supports building
                    253:        shared objects on your OS.
1.15      millert   254:
1.10      millert   255:   --disable-root-mailer
1.16      millert   256:        By default sudo will run the mailer as root when tattling
                    257:        on a user so as to prevent that user from killing the mailer.
                    258:        With this option, sudo will run the mailer as the invoking
                    259:        user which some people consider to be safer.
1.11      millert   260:
                    261:   --disable-setreuid
1.16      millert   262:        Disable use of the setreuid() function for operating systems
                    263:        where it is broken.  Mac OS X has setreuid() but it doesn't
                    264:        really work.
1.5       millert   265:
1.13      millert   266:   --disable-setresuid
1.16      millert   267:        Disable use of the setresuid() function for operating systems
                    268:        where it is broken (none currently known).
1.13      millert   269:
1.1       millert   270:   --disable-sia
1.16      millert   271:        Disable SIA support.  This is the "Security Integration
                    272:        Architecture" on Digital UNIX. If you disable SIA sudo will
                    273:        use its own authentication routines.
1.1       millert   274:
                    275:   --disable-shadow
1.16      millert   276:        Disable shadow password support.  Normally, sudo will compile
                    277:        in shadow password support and use a shadow password if it
                    278:        exists.
1.12      millert   279:
                    280:   --with-sudoers-mode=MODE
1.16      millert   281:        File mode for the sudoers file (octal).  Note that if you
                    282:        wish to NFS-mount the sudoers file this must be group
                    283:        readable.  Also note that this is actually set in the
                    284:        Makefile.  The default mode is 0440.
1.12      millert   285:
                    286:   --with-sudoers-uid=UID
1.16      millert   287:        User id that "owns" the sudoers file.  Note that this is
                    288:        the numeric id, *not* the symbolic name.  Also note that
                    289:        this is actually set in the Makefile.  The default is 0.
1.12      millert   290:
                    291:   --with-sudoers-gid=GID
1.16      millert   292:        Group id that "owns" the sudoers file.  Note that this is
                    293:        the numeric id, *not* the symbolic name.  Also note that
                    294:        this is actually set in the Makefile.  The default is 0.
1.1       millert   295:
                    296:   --without-interfaces
1.16      millert   297:        This option keeps sudo from trying to glean the ip address
                    298:        from each attached ethernet interface.  It is only useful
                    299:        on a machine where sudo's interface reading support does
                    300:        not work, which may be the case on some SysV-based OS's
                    301:        using STREAMS.
1.1       millert   302:
                    303:   --without-passwd
1.16      millert   304:        This option excludes authentication via the passwd (or
                    305:        shadow) file.  It should only be used when another, alternative,
                    306:        authentication scheme is in use.
1.1       millert   307:
                    308:   --with-otp-only
1.16      millert   309:        This option is now just an alias for --without-passwd.
1.13      millert   310:
                    311:   --with-stow
1.16      millert   312:        Properly handle GNU stow packaging.  The sudoers file will
                    313:        physically live in ${prefix}/etc and /etc/sudoers will be
                    314:        a symbolic link.
1.1       millert   315:
1.4       millert   316: The following options are also configurable at runtime:
                    317:
1.1       millert   318:   --with-long-otp-prompt
1.16      millert   319:        When validating with a One Time Password scheme (S/Key or
                    320:        OPIE), a two-line prompt is used to make it easier to cut
                    321:        and paste the challenge to a local window.  It's not as
                    322:        pretty as the default but some people find it more convenient.
1.1       millert   323:
                    324:   --with-logging=TYPE
1.16      millert   325:        How you want to do your logging.  You may choose "syslog",
                    326:        "file", or "both".  Setting this to "syslog" is nice because
                    327:        you can keep all of your sudo logs in one place (see the
                    328:        sample.syslog.conf file).  The default is "syslog".
1.1       millert   329:
                    330:   --with-logfac=FACILITY
1.16      millert   331:        Determines which syslog facility to log to.  This requires
                    332:        a 4.3BSD or later version of syslog.  You can still set
                    333:        this for ancient syslogs but it will have no effect.  The
                    334:        following facilities are supported: authpriv (if your OS
                    335:        supports it), auth, daemon, user, local0, local1, local2,
                    336:        local3, local4, local5, local6, and local7.
1.1       millert   337:
                    338:   --with-goodpri=PRIORITY
1.16      millert   339:        Determines which syslog priority to log successfully
                    340:        authenticated commands.  The following priorities are
                    341:        supported: alert, crit, debug, emerg, err, info, notice,
                    342:        and warning.
1.1       millert   343:
                    344:   --with-badpri=PRIORITY
1.16      millert   345:        Determines which syslog priority to log unauthenticated
                    346:        commands and errors.  The following priorities are supported:
                    347:        alert, crit, debug, emerg, err, info, notice, and warning.
1.12      millert   348:
                    349:   --with-logpath=PATH
1.16      millert   350:        Override the default location of the sudo log file and use
                    351:        "path" instead.  By default will use /var/log/sudo.log if
                    352:        there is a /var/log dir, falling back to /var/adm/sudo.log
                    353:        or /usr/adm/sudo.log if not.
1.1       millert   354:
1.12      millert   355:   --with-loglen=NUMBER
1.1       millert   356:        Number of characters per line for the file log.  This is only used if
                    357:        you are to "file" or "both".  This value is used to decide when to wrap
                    358:        lines for nicer log files.  The default is 80.  Setting this to 0
                    359:        will disable the wrapping.
                    360:
                    361:   --with-ignore-dot
                    362:        If set, sudo will ignore '.' or '' (current dir) in $PATH.
                    363:        The $PATH itself is not modified.
                    364:
1.12      millert   365:   --with-mailto=USER|MAIL_ALIAS
                    366:        User (or mail alias) that mail from sudo is sent to.
                    367:        This should go to a sysadmin at your site.  The default is "root".
1.1       millert   368:
1.12      millert   369:   --with-mailsubject="SUBJECT OF MAIL"
1.1       millert   370:        Subject of the mail sent to the "mailto" user. The token "%h"
                    371:        will expand to the hostname of the machine.
                    372:        Default is "*** SECURITY information for %h ***".
                    373:
                    374:   --without-mail-if-no-user
1.4       millert   375:        Normally, sudo will mail to the "alertmail" user if the user invoking
1.1       millert   376:        sudo is not in the sudoers file.  This option disables that behavior.
                    377:
                    378:   --with-mail-if-no-host
                    379:        Send mail to the "alermail" user if the user exists in the sudoers
                    380:        file, but is not allowed to run commands on the current host.
                    381:
                    382:   --with-mail-if-noperms
                    383:        Send mail to the "alermail" user if the user is allowed to use sudo but
                    384:        the command they are trying is not listed in their sudoers file entry.
                    385:
1.12      millert   386:   --with-passprompt="PASSWORD PROMPT"
1.1       millert   387:        Default prompt to use when asking for a password; can be overridden
                    388:        via the -p option and the SUDO_PROMPT environment variable. Supports
1.17    ! millert   389:        the "%H", "%h", "%U" and "%u" escapes as documented in the sudo
        !           390:        manual page.  The default value is "Password:".
1.1       millert   391:
1.12      millert   392:   --with-badpass-message="BAD PASSWORD MESSAGE"
1.1       millert   393:        Message that is displayed if a user enters an incorrect password.
                    394:        The default is "Sorry, try again." unless insults are turned on.
                    395:
                    396:   --with-fqdn
1.16      millert   397:        Define this if you want to put fully qualified hostnames in the sudoers
1.1       millert   398:        file.  Ie: instead of myhost you would use myhost.mydomain.edu.  You may
                    399:        still use the short form if you wish (and even mix the two).  Beware
                    400:        that turning FQDN on requires sudo to make DNS lookups which may make
                    401:        sudo unusable if your DNS is totally hosed.  Also note that you must
                    402:        use the host's official name as DNS knows it.  That is, you may not use
                    403:        a host alias (CNAME entry) due to performance issues and the fact that
                    404:        there is no way to get all aliases from DNS.
                    405:
1.12      millert   406:   --with-timedir=PATH
1.1       millert   407:        Override the default location of the sudo timestamp directory and
                    408:        use "path" instead.
                    409:
1.12      millert   410:   --with-sendmail=PATH
1.1       millert   411:        Override configure's guess as to the location of sendmail.
                    412:
                    413:   --without-sendmail
                    414:        Do not use sendmail to mail messages to the "mailto" user.
                    415:        Use only if don't run sendmail or the equivalent.
                    416:
1.12      millert   417:   --with-umask=MASK
1.1       millert   418:        Umask to use when running the root command.  The default is 0022.
                    419:
                    420:   --without-umask
                    421:        Preserves the umask of the user invoking sudo.
                    422:
1.12      millert   423:   --with-runas-default=USER
1.1       millert   424:        The default user to run commands as if the -u flag is not specified
                    425:        on the command line.  This defaults to "root".
                    426:
1.12      millert   427:   --with-exempt=GROUP
1.1       millert   428:        Users in the specified group don't need to enter a password when
                    429:        running sudo.  This may be useful for sites that don't want their
                    430:        "core" sysadmins to have to enter a password but where Jr. sysadmins
                    431:        need to.  You should probably use NOPASSWD in sudoers instead.
                    432:
1.12      millert   433:   --with-passwd-tries=NUMBER
1.1       millert   434:        Number of tries a user gets to enter his/her password before sudo logs
                    435:        the failure and exits.  The default is 3.
                    436:
1.12      millert   437:   --with-timeout=NUMBER
1.1       millert   438:        Number of minutes that can elapse before sudo will ask for a passwd
                    439:        again.  The default is 5, set this to 0 to always prompt for a password.
                    440:
1.12      millert   441:   --with-password-timeout=NUMBER
1.1       millert   442:        Number of minutes before the sudo password prompt times out.
                    443:        The default is 5, set this to 0 for no password timeout.
                    444:
                    445:   --with-tty-tickets
1.4       millert   446:        This makes sudo use a different ticket file for each user/tty combo.
                    447:        Ie: instead of the ticket path being "username" it is "username/tty".
1.1       millert   448:        This is useful for "shared" accounts like "operator".  Note that this
                    449:        means that there will be more files in the timestamp dir.  This is not
                    450:        a problem if your system has a cron job to remove of files from /tmp
                    451:        (or wherever you specified the timestamp dir to be).
                    452:
                    453:   --with-insults
                    454:        Define this if you want to be insulted for typing an incorrect password
                    455:        just like the original sudo(8).  This is off by default.
                    456:
                    457:   --with-all-insults
1.7       millert   458:        Include all the insult sets listed below.  You must either specify
                    459:        --with-insults or enable insults in the sudoers file for this to
                    460:        have any effect.
1.1       millert   461:
                    462:   --with-classic-insults
                    463:        Uses insults from sudo "classic."  If you just specify --with-insults
                    464:        you will get the classic and CSOps insults.  This is on by default if
                    465:        --with-insults is given.
                    466:
                    467:   --with-csops-insults
                    468:        Insults the user with an extra set of insults (some quotes, some
                    469:        original) from a sysadmin group at CU (CSOps).  You must specify
                    470:        --with-insults as well for this to have any effect.  This is on by
                    471:        default if --with-insults is given.
                    472:
                    473:   --with-hal-insults
                    474:        Uses 2001-like insults when an incorrect password is entered.
1.7       millert   475:        You must either specify --with-insults or enable insults in the
                    476:        sudoers file for this to have any effect.
1.1       millert   477:
                    478:   --with-goons-insults
                    479:        Insults the user with lines from the "Goon Show" when an incorrect
1.7       millert   480:        password is entered.  You must either specify --with-insults or
                    481:        enable insults in the sudoers file for this to have any effect.
1.1       millert   482:
1.15      millert   483:   --with-pc-insults
                    484:        Replace politically incorrect insults with less objectionable ones.
                    485:
1.12      millert   486:   --with-secure-path[=PATH]
1.1       millert   487:        Path used for every command run from sudo(8).  If you don't trust the
                    488:        people running sudo to have a sane PATH environment variable you may
                    489:        want to use this.  Another use is if you want to have the "root path"
                    490:        be separate from the "user path."  You will need to customize the path
                    491:        for your site.  NOTE: this is not applied to users in the group
                    492:        specified by --with-exemptgroup.  If you do not specify a path,
                    493:        "/bin:/usr/ucb:/usr/bin:/usr/sbin:/sbin:/usr/etc:/etc" is used.
                    494:
                    495:   --without-lecture
                    496:        Don't print the lecture the first time a user runs sudo.
                    497:
1.12      millert   498:   --with-editor=PATH
1.15      millert   499:        Specify the default editor path for use by visudo.  This may be a
                    500:        single pathname or a colon-separated list of editors.  In the latter
                    501:        case, visudo will choose the editor that matches the user's VISUAL
                    502:        or EDITOR environment variables or the first editor in the list that
                    503:        exists.  The default is the path to vi on your system.
1.5       millert   504:
                    505:   --with-env-editor
1.15      millert   506:        Makes visudo consult the VISUAL and EDITOR environment variables before
1.7       millert   507:        falling back on the default editor list (as specified by --with-editor).
                    508:        Note that this may create a security hole as it allows the user to
                    509:        run any arbitrary command as root without logging.  A safer alternative
1.15      millert   510:        is to use a colon-separated list of editors with the --with-editor
                    511:        option.  visudo will then only use the VISUAL or EDITOR variables
                    512:        if they match a value specified via --with-editor.
1.5       millert   513:
1.1       millert   514:   --disable-authentication
1.16      millert   515:        By default, sudo requires the user to authenticate via a
                    516:        password or similar means.  This options causes sudo to
                    517:        *not* require authentication.  It is possible to turn
                    518:        authentication back on in sudoers via the PASSWD attribute.
1.1       millert   519:
                    520:   --disable-root-sudo
                    521:        Don't let root run sudo.  This can be used to prevent people from
                    522:        "chaining" sudo commands to get a root shell by doing something
                    523:        like "sudo sudo /bin/sh".
                    524:
                    525:   --enable-log-host
                    526:        Log the hostname in the log file.
1.3       millert   527:
                    528:   --enable-noargs-shell
                    529:        If sudo is invoked with no arguments it acts as if the "-s" flag had
                    530:        been given.  That is, it runs a shell as root (the shell is determined
                    531:        by the SHELL environment variable, falling back on the shell listed
                    532:        in the invoking user's /etc/passwd entry).
1.1       millert   533:
                    534:   --enable-shell-sets-home
                    535:        If sudo is invoked with the "-s" flag the HOME environment variable
                    536:        will be set to the home directory of the target user (which is root
                    537:        unless the "-u" option is used).  This option effectively makes the
                    538:        "-s" flag imply "-H".
                    539:
                    540:   --disable-path-info
                    541:        Normally, sudo will tell the user when a command could not be found
                    542:        in their $PATH.  Some sites may wish to disable this as it could
                    543:        be used to gather information on the location of executables that
                    544:        the normal user does not have access to.  The disadvantage is that
                    545:        if the executable is simply not in the user's path, sudo will tell
                    546:        the user that they are not allowed to run it, which can be confusing.
                    547:
                    548: Shadow password and C2 support
                    549: ==============================
                    550:
                    551: Shadow passwords (also included with most C2 security packages) are
                    552: supported on most major platforms for which they exist.  The
                    553: `configure' script will attempt to determine if your system can use
                    554: shadow passwords and include support for them if so.  Shadow password
                    555: support is now compiled in by default (it doesn't hurt anything if you
                    556: don't have them configured).  To disable the shadow password support,
                    557: use the --disable-shadow option to configure.
                    558:
                    559: Shadow passwords are known to work on the following platforms:
                    560:
                    561:     SunOS 4.x
                    562:     Solaris 2.x
                    563:     HP-UX >= 9.x
                    564:     Ultrix 4.x
                    565:     Digital UNIX
                    566:     IRIX >= 5.x
                    567:     AIX >= 3.2.x
                    568:     ConvexOS with C2 security (not tested recently)
                    569:     Linux
                    570:     SCO >= 3.2.2
                    571:     Pyramid DC/OSx
                    572:     UnixWare
                    573:     SVR4 (and variants using standard SVR4 shadow passwords)
                    574:     4.4BSD based systems (including OpenBSD, NetBSD, FreeBSD, and BSD/OS)
                    575:     OS's using SecureWare's C2 security.
                    576:
                    577: OS dependent notes
                    578: ==================
                    579:
                    580: OpenBSD < 2.2 and NetBSD < 1.2.1:
1.15      millert   581:     The fdesc file system has a bug wrt /dev/tty handling that
1.1       millert   582:     causes sudo to hang at the password prompt.  The workaround
                    583:     is to run configure with --with-password-timeout=0
                    584:
                    585: Solaris 2.x:
                    586:     You need to have a C compiler in order to build sudo.
                    587:     Since Solaris 2.x does not come with one by default this
                    588:     means that you either need to have purchased the unbundled Sun
                    589:     C compiler or have a copy of the GNU C compiler (gcc).
                    590:     The SunSoft Catalyst CD should contain gcc binaries for
                    591:     Solaris.  You can also get them from various places on the
                    592:     net, including http://www.sunfreeware.com/
                    593:     NOTE: sudo will *not* build with the sun C compiler in BSD
1.16      millert   594:          compatibility mode (/usr/ucb/cc).  Sudo is designed to
                    595:          compile with the standard C compiler (or gcc) and will
                    596:          not build correctly with /usr/ucb/cc.  You can use the
                    597:          `--with-CC' option to point `configure' to the non-ucb
                    598:          compiler if it is not the first cc in your path.  Some
                    599:          sites link /usr/ucb/cc to gcc; configure will not notice
                    600:          this an still refuse to use /usr/ucb/cc, so make sure gcc
                    601:          is also in your path if your site is setup this way.
1.1       millert   602:     Also: Many versions of Solaris come with a broken syslogd.
                    603:          If you have having problems with sudo logging you should
                    604:          make sure you have the latest syslogd patch installed.
                    605:          This is a problem for Solaris 2.4 and 2.5 at least.
                    606:
                    607: AIX 3.2.x:
                    608:     I've had various problems with the AIX C compiler producing
                    609:     incorrect code when the -O flag was used.  When optimization
                    610:     is not used, the problems go away.  Gcc does not appear
                    611:     to have this problem.
                    612:
                    613:     Also, the AIX 3.2.x lex will not work with sudo's parse.lex.
                    614:     This should not be a problem as sudo comes shipped with
                    615:     a pre-generated lex.yy.c (created by flex).  If you want
                    616:     to modify the lex tokenizer, make sure you grab a copy of
                    617:     flex from ftp.ee.lbl.gov (also available on most GNU mirrors)
                    618:     and sudo will use that instead.
                    619:
                    620: Ultrix 4.x:
                    621:     Ultrix still ships with the 4.2BSD syslog(3) which does not
                    622:     allow things like logging different facilities to different
                    623:     files, redirecting logs to a single loghost and other niceties.
                    624:     You may want to just grab and install:
                    625:        ftp://gatekeeper.dec.com/pub/DEC/jtkohl-syslog-complete.tar.Z
                    626:     (available via anonymous ftp) which is a port if the 4.3BSD
                    627:     syslog/syslogd that is backwards compatible with the Ultrix version.
                    628:     I recommend it highly.  If you do not do this you probably want
                    629:     to run configure with --with-logging=file
                    630:
                    631: Digital UNIX:
                    632:     By default, sudo will use SIA (Security Integration Architecture)
1.16      millert   633:     to validate a user.  If you want to use an alternative authentication
1.1       millert   634:     method that does not go through SIA, you need to use the
                    635:     --disable-sia option to configure.  If you use gcc to compile
                    636:     you will get warnings when building interfaces.c.  These are
                    637:     harmless but if they really bug you, you can edit
                    638:     /usr/include/net/if.h around line 123, right after the comment:
                    639:        /* forward decls for C++ */
                    640:     change the line:
                    641:        #ifdef __cplusplus
                    642:     to:
                    643:        #if defined(__cplusplus) || defined(__GNUC__)
                    644:     If you don't like the idea of editing the system header file
                    645:     you can just make a copy in gcc's private include tree and
                    646:     edit that.
                    647:
                    648: Linux:
1.16      millert   649:     PAM and LDAP headers are not installed by default on most Linux
                    650:     systems.  You will need to install the "pav-dev" package if
                    651:     /usr/include/security/pam_appl.h is not present on your system.
                    652:     If you wish to build with LDAP support you will also need the
                    653:     openldap-devel package.
                    654:
1.1       millert   655:     Versions of glibc 2.x previous to 2.0.7 have a broken lsearch().
                    656:     You will need to either upgrade to glibc-2.0.7 or use sudo's
                    657:     version of lsearch().  To use sudo's lsearch(), comment out
                    658:     the "#define HAVE_LSEARCH 1" line in config.h and add lsearch.o
                    659:     to the LIBOBJS line in the Makefile.
                    660:
1.9       millert   661:     If you are using a Linux kernel older than 2.4 it is not possible
                    662:     to access the sudoers file via NFS.  This is due to a bug in
                    663:     the Linux client-side NFS implementation that has since been
                    664:     fixed.  There is a workaround on the sudo ftp site, linux_nfs.patch,
                    665:     if you need to NFS-mount sudoers on older Linux kernels.
1.11      millert   666:
1.1       millert   667: Mac OS X:
                    668:     It has been reported that for sudo to work on Mac OS X it must
                    669:     either be built with the --with-password-timeout=0 option or the
                    670:     password timeout must be disabled in the Defaults line in the
                    671:     sudoers file.  If sudo just hangs when you try to enter a password,
                    672:     you need to disable the password timeout (Note: this is not a bug
                    673:     in sudo).
                    674:
                    675: SCO ODT:
                    676:     You'll probably need libcrypt_i.a available via anonymous ftp
                    677:     from sosco.sco.com.  The necessary files are /SLS/lng225b.Z
                    678:     and /SLS/lng225b.ltr.Z.
1.5       millert   679:
                    680: Dynix:
                    681:     Some people have experienced problems building sudo with gcc
                    682:     on Dynix.  If you experience problems compiling sudo using gcc
                    683:     on Dynix, try using the native compiler (cc).  You can do so
                    684:     by removing the config.cache file and then re-running configure
                    685:     with the --with-CC=cc option.
1.15      millert   686:
                    687: HP-UX:
                    688:     The default C compiler shipped with HP-UX does not support creating
                    689:     position independent code and so is unable to support sudo's "noexec"
                    690:     functionality.  You must use either the HP ANSI C compiler or gcc for
                    691:     noexec to work.  Binary packages of gcc are available from
                    692:     http://hpux.connect.org.uk/ and http://hpux.cs.utah.edu/.
1.16      millert   693:
                    694: SunOS 4.x:
                    695:     The /bin/sh shipped with SunOS blows up while running configure.
                    696:     You can work around this by installalling bash or zsh.  If you
                    697:     have bash or zsh in your path, configure will use it instead
                    698:     automatically.