Imported Upstream version 1.8.7

[debian/sudo] / INSTALL

Sudo installation instructions
==============================

Sudo uses a `configure' script to probe the capabilities and type
of the system in question.  In this release, `configure' takes many
more options than it did before.  Please read this document fully
before configuring and building sudo.  You may also wish to read the
file INSTALL.configure which explains more about the `configure' script.

System requirements
===================

To build sudo from the source distribution you need a POSIX-compliant
operating system (any modern version of BSD, Linux or Unix should work),
an ANSI/ISO C compiler that supports the "long long" type, variadic
macros (a C99 feature) as well as the ar, make and ranlib utilities.

If you wish to modify the parser then you will need flex version
2.5.2 or later and either bison or byacc (sudo comes with a
pre-generated parser).  You'll also have to run configure with the
--with-devel option or pass DEVEL=1 to make.  You can get flex from
http://flex.sourceforge.net/.  You can get GNU bison from
ftp://ftp.gnu.org/pub/gnu/bison/ or any GNU mirror.

Simple sudo installation
========================

For most systems and configurations it is possible simply to:

    0) If you are upgrading from a previous version of sudo
       please read the info in the UPGRADE file before proceeding.

    1) Read the `OS dependent notes' section for any particular
       "gotchas" relating to your operating system.

    2) `cd' to the source or build directory and type `./configure'
       to generate a Makefile and config.h file suitable for building
       sudo.  Before you actually run configure you should read the
       `Available configure options' section to see if there are
       any special options you may want or need.

    4) Type `make' to compile sudo.  If you are building sudo
       in a separate build tree (apart from the sudo source) GNU
       make will probably be required.  If `configure' did its job
       properly (and you have a supported configuration) there won't
       be any problems.  If this doesn't work, take a look at the
       doc/TROUBLESHOOTING file for tips on what might have gone
       wrong.  Please mail us if you have a fix or if you are unable
       to come up with a fix (address at EOF).

    5) Type `make install' (as root) to install sudo, visudo, the
       man pages, and a skeleton sudoers file.  Note that the install
       will not overwrite an existing sudoers file.  You can also
       install various pieces the package via the install-binaries,
       install-doc, and install-sudoers make targets.

    6) Edit the sudoers file with `visudo' as necessary for your
       site.  You will probably want to refer the sample.sudoers
       file and sudoers man page included with the sudo package.

    7) If you want to use syslogd(8) to do the logging, you'll need
       to update your /etc/syslog.conf file.  See the sample.syslog.conf
       file included in the distribution for an example.

Available configure options
===========================

This section describes flags accepted by the sudo's `configure' script.
Defaults are listed in brackets after the description.

Configuration:
  --cache-file=FILE
        Cache test results in FILE

  --config-cache, -C
        Alias for `--cache-file=config.cache'

  --help, -h
        Print the usage/help info

  --no-create, -n
        Do not create output files

  --quiet, --silent, -q
        Do not print `checking...' messages

  --srcdir=DIR
        Find the sources in DIR [configure dir or `..']

Directory and file names:
  --prefix=PREFIX
        Install architecture-independent files in PREFIX.  [/usr/local]

  --exec-prefix=EPREFIX
        Install architecture-dependent files in EPREFIX.
        This includes the executables and plugins.  [same as PREFIX]

  --bindir=DIR
        Install `sudo', `sudoedit' and `sudoreplay' in DIR. [EPREFIX/bin]

  --sbindir=DIR
        Install `visudo' in DIR. [EPREFIX/sbin]

  --libexecdir=DIR
        Install plugins and helper programs in DIR/sudo [PREFIX/libexec/sudo]

  --sysconfdir=DIR
        Look for `sudo.conf' and `sudoers' files in DIR. [/etc]

  --includedir=DIR
        Install sudo_plugin.h include file in DIR [PREFIX/include]

  --datarootdir=DIR
        Root directory for platform-independent data files [PREFIX/share]

  --localedir=DIR
        Install sudo and sudoers locale files in DIR [DATAROOTDIR/locale]

  --mandir=DIR
        Install man pages in DIR [PREFIX/man]

  --docdir=DIR
        Install other sudo documentation in DIR [DATAROOTDIR/doc/sudo]

  --with-plugindir=PATH
        Set the directory that sudo looks in to find the policy and I/O
        logging plugins.  Defaults to the LIBEXEC/sudo.

  --with-timedir=PATH
        Use PATH to store the sudo time stamp files.  By default,
        the first existing directory in the following list is used:
        /var/db, /var/lib, /var/adm, /usr/adm.

Compilation options:
  --disable-hardening
        Disable the use of compiler/linker exploit mitigation options
        which are enabled by default.  This includes compiling with
        _FORTIFY_SOURCE defined to 2, building with -fstack-protector
        and linking with -zrelro, where supported.

  --enable-pie
        Build sudo and related programs as as a position independent
        executables (PIE).  This improves the effectiveness of address
        space layout randomization (ASLR) on systems that support it.
        Sudo will create PIE binaries by default on Linux systems.

  --disable-pie
        Disable the creation of position independent executables (PIE),
        even if the compiler creates PIE binaries by default.  This
        option may be needed on some Linux systems where PIE binaries
        are not fully supported.

  --disable-rpath
        By default, configure will use -Rpath in addition to -Lpath
        when passing library paths to the loader.  This option will
        disable the use of -Rpath.

  --disable-shared
        Disable dynamic shared object support.  By default, sudo
        is built with a plugin API capable of loading arbitrary
        policy and I/O logging plugins.  If the --disable-shared
        option is specified, this support is disabled and the default
        sudoers policy and I/O plugins are embedded in the sudo
        binary itself.  This will also disable the noexec option
        as it too relies on dynamic shared object support.

  --enable-zlib[=location]
        Enable the use of the zlib compress library when storing
        I/O log files.  If specified, location is the base directory
        containing the zlib include and lib directories.  The special
        values "system" and "builtin" can be used to indicate that
        the system version of zlib should be used or that the version
        of zlib shipped with sudo should be used instead.
        If this option is not specified, configure will use the
        system zlib if it is present.

  --with-incpath=DIR
        Adds the specified directory (or directories) to CPPFLAGS
        so configure and the compiler will look there for include
        files.  Multiple directories may be specified as long as
        they are space separated.
        E.g. --with-incpath="/usr/local/include /opt/include"

  --with-libpath=DIR
        Adds the specified directory (or directories) to LDFLAGS
        so configure and the compiler will look there for libraries.
        Multiple directories may be specified as with --with-incpath.

  --with-libraries=LIBRARY
        Adds the specified library (or libraries) to SUDO_LIBS and
        and VISUDO_LIBS so sudo will link against them.  If the
        library doesn't start with `-l' or end in `.a' or `.o' a
        `-l' will be pre-pended to it.  Multiple libraries may be
        specified as long as they are space separated.

  --with-libtool=PATH
        By default, sudo will use the included version of libtool
        to build shared libraries.  The --with-libtool option can
        be used to specify a different version of libtool to use.
        The special values "system" and "builtin" can be used in
        place of a path to denote the default system libtool (obtained
        via the user's PATH) and the default libtool that comes
        with sudo.

Optional features:
  --disable-root-mailer
        By default sudo will run the mailer as root when tattling
        on a user so as to prevent that user from killing the mailer.
        With this option, sudo will run the mailer as the invoking
        user which some people consider to be safer.

  --enable-nls[=location]
        Enable natural language support using the gettext() family
        of functions.  If specified, location is the base directory
        containing the libintl include and lib directories.  If
        this option is not specified, configure will look for the
        gettext() family of functions in the standard C library
        first, then check for a standalone libintl (linking with
        libiconv as needed).

  --disable-nls
        Disable natural language support.  By default, sudo will
        use the gettext() family of functions, if available, to
        implement messages in the invoking user's native language.
        Note that translations do not exist for all languages.

  --with-ldap[=DIR]
        Enable LDAP support.  If specified, DIR is the base directory
        containing the LDAP include and lib directories.  Please see
        README.LDAP for more information.

  --with-ldap-conf-file=PATH
        Path to LDAP configuration file.  If specified, sudo reads
        this file instead of /etc/ldap.conf to locate the LDAP server.

  --with-ldap-secret-file=PATH
        Path to LDAP secret password file.  If specified, sudo uses
        this file instead of /etc/ldap.secret to read the secret password
        when rootbinddn is specified in the ldap config file.

  --with-logincap
        This adds support for login classes specified in /etc/login.conf.
        It is enabled by default on BSD/OS, Darwin, FreeBSD, OpenBSD and
        NetBSD (where available).  By default, a login class is not applied
        unless the 'use_loginclass' option is defined in sudoers or the user
        specifies a class on the command line.

  --with-interfaces=no, --without-interfaces
        This option keeps sudo from trying to glean the ip address
        from each attached Ethernet interface.  It is only useful
        on a machine where sudo's interface reading support does
        not work, which may be the case on some SysV-based OS's
        using STREAMS.

  --with-noexec[=PATH]
        Enable support for the "noexec" functionality which prevents
        a dynamically-linked program being run by sudo from executing
        another program (think shell escapes).  Please see the
        "PREVENTING SHELL ESCAPES" section in the sudoers man page
        for details.  If specified, PATH should be a fully qualified
        path name, e.g. /usr/local/libexec/sudo_noexec.so.  If PATH
        is "no", noexec support will not be compiled in.  The default
        is to compile noexec support if libtool supports building
        shared objects on your OS.

  --with-selinux 
        Enable support for role based access control (RBAC) on
        systems that support SELinux.

  --with-sssd
        Enable support for using the System Security Services Daemon
        (SSSD) as a sudoers data source.  For more information on
        SSD, see http://fedorahosted.org/sssd/

  --with-sssd-lib=PATH
        Specify the path to the SSSD shared library, which is loaded
        at run-time.

Operating system-specific options:
  --disable-setreuid
        Disable use of the setreuid() function for operating systems
        where it is broken.  For instance, 4.4BSD has setreuid()
        that is not fully functional.

  --disable-setresuid
        Disable use of the setresuid() function for operating systems
        where it is broken (none currently known).

  --enable-admin-flag
        Enable the creation of an Ubuntu-style admin flag file
        the first time sudo is run.

  --with-bsm-audit
        Enable support for sudo BSM audit logs on systems that support it.
        This includes recent versions of FreeBSD, Mac OS X and Solaris.

  --with-linux-audit
        Enable audit support for Linux systems.  Audits attempts
        to run a command as well as SELinux role changes.

  --with-man
        Use the "man" macros for manual pages.  By default, mdoc versions
        of the manuals are installed if supported.  This can be used to
        override configure's test for "nroff -mdoc" support.

  --with-mdoc
        Use the "mdoc" macros for manual pages.  By default, mdoc versions
        of the manuals are installed if supported.  This can be used to
        override configure's test for "nroff -mdoc" support.

  --with-netsvc[=PATH]
        Path to netsvc.conf or "no" to disable netsvc.conf support.
        If specified, sudo uses this file instead of /etc/netsvc.conf
        on AIX systems.  If netsvc support is disabled but LDAP is
        enabled, sudo will check LDAP first, then the sudoers file.

  --with-nsswitch[=PATH]
        Path to nsswitch.conf or "no" to disable nsswitch support.
        If specified, sudo uses this file instead of /etc/nsswitch.conf.
        If nsswitch support is disabled but LDAP is enabled, sudo will
        check LDAP first, then the sudoers file.

  --with-project
        Enable support for Solaris project resource limits.
        This option is only available on Solaris 9 and above.

Authentication options:
  --with-AFS
        Enable AFS support with Kerberos authentication.  Should work under
        AFS 3.3.  If your AFS doesn't have -laudit you should be able to
        link without it.

  --with-aixauth
        Enable support for the AIX 4.x general authentication function.
        This will use the authentication scheme specified for the user
        on the machine.  It is on by default for AIX systems that
        support it.

  --with-bsdauth
        Enable support for BSD authentication.  This is the default
        for BSD/OS and OpenBSD systems that support it.
        It is not possible to mix BSD authentication with other
        authentication methods (and there really should be no need
        to do so).  Note that only the newer BSD authentication API
        is supported.  If you don't have /usr/include/bsd_auth.h
        then you cannot use this.

  --with-DCE
        Enable DCE support for systems without PAM.  Known to work on
        HP-UX 9.X, 10.X, and 11.0; other systems may require source
        code and/or `configure' changes.  On systems with PAM support
        (such as HP-UX 11.0 and higher, Solaris, FreeBSD and Linux), the
        DCE PAM module (usually libpam_dce) should be used instead.

  --with-fwtk[=DIR]
        Enable TIS Firewall Toolkit (FWTK) 'authsrv' support. If specified,
        DIR is the base directory containing the compiled FWTK package
        (or at least the library and header files).

  --with-kerb5[=DIR]
        Enable Kerberos V support.  If specified, DIR is the base
        directory containing the Kerberos V include and lib dirs.
        This uses Kerberos pass phrases for authentication but
        does not use the Kerberos cookie scheme.  Will not work for
        Kerberos V older than version 1.1.

  --enable-kerb5-instance=string
        By default, the user name is used as the principal name
        when authenticating via Kerberos V.  If this option is
        enabled, the specified instance string will be appended to
        the user name (separated by a slash) when creating the
        principal name.

  --with-opie[=DIR]
        Enable NRL OPIE OTP (One Time Password) support.  If specified,
        DIR should contain include and lib directories with opie.h
        and libopie.a respectively.

  --with-otp-only
        This option is now just an alias for --without-passwd.

  --with-pam
        Enable PAM support.  This is on by default for Darwin, FreeBSD,
        Linux, Solaris and HP-UX (version 11 and higher).

        NOTE: on RedHat Linux and Fedora you *must* have an /etc/pam.d/sudo
        file install.  You may either use the sample.pam file included with
        sudo or use /etc/pam.d/su as a reference.  The sample.pam file
        included with sudo may or may not work with other Linux distributions.
        On Solaris and HP-UX 11 systems you should check (and understand)
        the contents of /etc/pam.conf.  Do a "man pam.conf" for more
        information and consider using the "debug" option, if available,
        with your PAM libraries in /etc/pam.conf to obtain syslog output
        for debugging purposes.

  --with-pam-login
        Enable a specific PAM session when sudo is given the -i option.
        This changes the PAM service name when sudo is run with the -i
        option from "sudo" to "sudo-i", allowing for a separate pam
        configuration for sudo's initial login mode.

  --disable-pam-session
        Disable sudo's PAM session support.  This may be needed on
        older PAM implementations or on operating systems where
        opening a PAM session changes the utmp or wtmp files.  If
        PAM session support is disabled, resource limits may not
        be updated for the command being run.

  --with-passwd=no, --without-passwd
        This option excludes authentication via the passwd (or
        shadow) file.  It should only be used when another, alternative,
        authentication scheme is in use.

  --with-SecurID[=DIR]
        Enable SecurID support.  If specified, DIR is directory containing
        libaceclnt.a, acexport.h, and sdacmvls.h.

  --with-skey[=DIR]
        Enable S/Key OTP (One Time Password) support.  If specified,
        DIR should contain include and lib directories with skey.h
        and libskey.a respectively.

  --disable-sia
        Disable SIA support.  This is the "Security Integration
        Architecture" on Digital UNIX. If you disable SIA sudo will
        use its own authentication routines.

  --disable-shadow
        Disable shadow password support.  Normally, sudo will compile
        in shadow password support and use a shadow password if it
        exists.

  --enable-gss-krb5-ccache-name
        Use the gss_krb5_ccache_name() function to set the Kerberos
        V credential cache file name.  By default, sudo will use
        the KRB5CCNAME environment variable to set this.  While
        gss_krb5_ccache_name() provides a better API to do this it
        is not supported by all Kerberos V and SASL combinations.

Development options:
  --enable-env-debug
        Enable debugging of the environment setting functions.  This
        enables extra checks to make sure the environment does not
        become corrupted.

  --enable-warnings
        Enable compiler warnings when building sudo with gcc.

  --enable-werror
        Enable the -Werror compiler option when building sudo with gcc.

  --with-devel
        Configure development options.  This will enable compiler warnings
        and set up the Makefile to be able to regenerate the sudoers parser
        as well as the manual pages.

  --with-efence
        Link with the "electric fence" debugging malloc.

Options that set runtime-changeable default values:
  --disable-authentication
        By default, sudo requires the user to authenticate via a
        password or similar means.  This options causes sudo to
        *not* require authentication.  It is possible to turn
        authentication back on in sudoers via the PASSWD attribute.
        Sudoers option: !authenticate

  --disable-env-reset
        Disable environment resetting.  This sets the default value
        of the "env_reset" Defaults option in sudoers to false.
        Sudoers option: !env_reset

  --disable-path-info
        Normally, sudo will tell the user when a command could not be found
        in their $PATH.  Some sites may wish to disable this as it could
        be used to gather information on the location of executables that
        the normal user does not have access to.  The disadvantage is that
        if the executable is simply not in the user's path, sudo will tell
        the user that they are not allowed to run it, which can be confusing.
        Sudoers option: path_info

  --disable-root-sudo
        Don't let root run sudo.  This can be used to prevent people from
        "chaining" sudo commands to get a root shell by doing something
        like "sudo sudo /bin/sh".
        Sudoers option: !root_sudo

  --disable-zlib
        Disable the use of the zlib compress library when storing
        I/O log files.
        Sudoers option: !compress_io

  --enable-log-host
        Log the hostname in the log file.
        Sudoers option: log_host

  --enable-noargs-shell
        If sudo is invoked with no arguments it acts as if the "-s" flag had
        been given.  That is, it runs a shell as root (the shell is determined
        by the SHELL environment variable, falling back on the shell listed
        in the invoking user's /etc/passwd entry).
        Sudoers option: shell_noargs

  --enable-shell-sets-home
        If sudo is invoked with the "-s" flag the HOME environment variable
        will be set to the home directory of the target user (which is root
        unless the "-u" option is used).  This option effectively makes the
        "-s" flag imply "-H".
        Sudoers option: set_home

  --with-all-insults
        Include all the insult sets listed below.  You must either specify
        --with-insults or enable insults in the sudoers file for this to
        have any effect.

  --with-askpass=PATH
        Set PATH as the "askpass" program to use when no tty is
        available.  Typically, this is a graphical password prompter,
        similar to the one used by ssh.  The program must take a
        prompt as an argument and print the received password to
        the standard output.  This value may overridden at run-time
        in the sudo.conf file.

  --with-badpass-message="BAD PASSWORD MESSAGE"
        Message that is displayed if a user enters an incorrect password.
        The default is "Sorry, try again." unless insults are turned on.
        Sudoers option: badpass_message

  --with-badpri=PRIORITY
        Determines which syslog priority to log unauthenticated
        commands and errors.  The following priorities are supported:
        alert, crit, debug, emerg, err, info, notice, and warning.
        Sudoers option: syslog_badpri

  --with-classic-insults
        Uses insults from sudo "classic."  If you just specify --with-insults
        you will get the classic and CSOps insults.  This is on by default if
        --with-insults is given.

  --with-csops-insults
        Insults the user with an extra set of insults (some quotes, some
        original) from a sysadmin group at CU (CSOps).  You must specify
        --with-insults as well for this to have any effect.  This is on by
        default if --with-insults is given.

  --with-editor=PATH
        Specify the default editor path for use by visudo.  This may be a
        single path name or a colon-separated list of editors.  In the latter
        case, visudo will choose the editor that matches the user's VISUAL
        or EDITOR environment variables or the first editor in the list that
        exists.  The default is the path to vi on your system.
        Sudoers option: editor

  --with-env-editor
        Makes visudo consult the VISUAL and EDITOR environment variables before
        falling back on the default editor list (as specified by --with-editor).
        Note that this may create a security hole as it allows the user to
        run any arbitrary command as root without logging.  A safer alternative
        is to use a colon-separated list of editors with the --with-editor
        option.  visudo will then only use the VISUAL or EDITOR variables
        if they match a value specified via --with-editor.
        Sudoers option: env_editor

  --with-exempt=GROUP
        Users in the specified group don't need to enter a password when
        running sudo.  This may be useful for sites that don't want their
        "core" sysadmins to have to enter a password but where Jr. sysadmins
        need to.  You should probably use NOPASSWD in sudoers instead.
        Sudoers option: exempt_group

  --with-fqdn
        Define this if you want to put fully qualified host names in the sudoers
        file.  Ie: instead of myhost you would use myhost.mydomain.edu.  You may
        still use the short form if you wish (and even mix the two).  Beware
        that turning FQDN on requires sudo to make DNS lookups which may make
        sudo unusable if your DNS is totally hosed.  Also note that you must
        use the host's official name as DNS knows it.  That is, you may not use
        a host alias (CNAME entry) due to performance issues and the fact that
        there is no way to get all aliases from DNS.
        Sudoers option: fqdn

  --with-goodpri=PRIORITY
        Determines which syslog priority to log successfully
        authenticated commands.  The following priorities are
        supported: alert, crit, debug, emerg, err, info, notice,
        and warning.
        Sudoers option: syslog_goodpri

  --with-goons-insults
        Insults the user with lines from the "Goon Show" when an incorrect
        password is entered.  You must either specify --with-insults or
        enable insults in the sudoers file for this to have any effect.

  --with-hal-insults
        Uses 2001-like insults when an incorrect password is entered.
        You must either specify --with-insults or enable insults in the
        sudoers file for this to have any effect.

  --with-ignore-dot
        If set, sudo will ignore '.' or '' (current dir) in $PATH.
        The $PATH itself is not modified.
        Sudoers option: ignore_dot

  --with-insults
        Define this if you want to be insulted for typing an incorrect password
        just like the original sudo(8).  This is off by default.
        Sudoers option: insults

  --with-insults=disabled
        Include support for insults but disable them unless explicitly
        enabled in sudoers.
        Sudoers option: !insults

  --with-iologdir[=DIR]
        By default, sudo stores I/O log files in either /var/log/sudo-io,
        /var/adm/sudo-io, or /usr/log/sudo-io.  If this option is
        specified, I/O logs will be stored in the indicated directory
        instead.
        Sudoers option: iolog_dir

  --with-lecture=no, --without-lecture
        Don't print the lecture the first time a user runs sudo.
        Sudoers option: !lecture

  --with-logfac=FACILITY
        Determines which syslog facility to log to.  This requires
        a 4.3BSD or later version of syslog.  You can still set
        this for ancient syslogs but it will have no effect.  The
        following facilities are supported: authpriv (if your OS
        supports it), auth, daemon, user, local0, local1, local2,
        local3, local4, local5, local6, and local7.
        Sudoers option: syslog

  --with-logging=TYPE
        How you want to do your logging.  You may choose "syslog",
        "file", or "both".  Setting this to "syslog" is nice because
        you can keep all of your sudo logs in one place (see the
        sample.syslog.conf file).  The default is "syslog".
        Sudoers options: syslog and logfile

  --with-loglen=NUMBER
        Number of characters per line for the file log.  This is only used if
        you are to "file" or "both".  This value is used to decide when to wrap
        lines for nicer log files.  The default is 80.  Setting this to 0
        will disable the wrapping.
        Sudoers options: loglinelen

  --with-logpath=PATH
        Override the default location of the sudo log file and use
        "path" instead.  By default will use /var/log/sudo.log if
        there is a /var/log dir, falling back to /var/adm/sudo.log
        or /usr/adm/sudo.log if not.
        Sudoers option: logfile

  --with-long-otp-prompt
        When validating with a One Time Password scheme (S/Key or
        OPIE), a two-line prompt is used to make it easier to cut
        and paste the challenge to a local window.  It's not as
        pretty as the default but some people find it more convenient.
        Sudoers option: long_otp_prompt

  --with-mail-if-no-user=no, --without-mail-if-no-user
        Normally, sudo will mail to the "alertmail" user if the user invoking
        sudo is not in the sudoers file.  This option disables that behavior.
        Sudoers option: mail_no_user

  --with-mail-if-no-host
        Send mail to the "alermail" user if the user exists in the sudoers
        file, but is not allowed to run commands on the current host.
        Sudoers option: mail_no_host

  --with-mail-if-noperms
        Send mail to the "alermail" user if the user is allowed to use sudo but
        the command they are trying is not listed in their sudoers file entry.
        Sudoers option: mail_no_perms

  --with-mailsubject="SUBJECT OF MAIL"
        Subject of the mail sent to the "mailto" user. The token "%h"
        will expand to the hostname of the machine.
        Default is "*** SECURITY information for %h ***".
        Sudoers option: mailsub

  --with-mailto=USER|MAIL_ALIAS
        User (or mail alias) that mail from sudo is sent to.
        This should go to a sysadmin at your site.  The default is "root".
        Sudoers option: mailto

  --with-passprompt="PASSWORD PROMPT"
        Default prompt to use when asking for a password; can be overridden
        via the -p option and the SUDO_PROMPT environment variable. Supports
        the "%H", "%h", "%U" and "%u" escapes as documented in the sudo
        manual page.  The default value is "Password:".
        Sudoers option: passprompt

  --with-password-timeout=NUMBER
        Number of minutes before the sudo password prompt times out.
        The default is 5, set this to 0 for no password timeout.
        Sudoers option: passwd_timeout

  --with-passwd-tries=NUMBER
        Number of tries a user gets to enter his/her password before sudo logs
        the failure and exits.  The default is 3.
        Sudoers option: passwd_tries

  --with-pc-insults
        Replace politically incorrect insults with less objectionable ones.

  --with-runas-default=USER
        The default user to run commands as if the -u flag is not specified
        on the command line.  This defaults to "root".
        Sudoers option: runas_default

  --with-secure-path[=PATH]
        Path used for every command run from sudo(8).  If you don't trust the
        people running sudo to have a sane PATH environment variable you may
        want to use this.  Another use is if you want to have the "root path"
        be separate from the "user path."  You will need to customize the path
        for your site.  NOTE: this is not applied to users in the group
        specified by --with-exemptgroup.  If you do not specify a path,
        "/bin:/usr/ucb:/usr/bin:/usr/sbin:/sbin:/usr/etc:/etc" is used.
        Sudoers option: secure_path

  --with-sendmail=PATH
        Override configure's guess as to the location of sendmail.
        Sudoers option: mailerpath

  --with-sendmail=no, --without-sendmail
        Do not use sendmail to mail messages to the "mailto" user.
        Use only if you don't run sendmail or the equivalent.
        Sudoers options: !mailerpath or !mailto

  --with-sudoers-mode=MODE
        File mode for the sudoers file (octal).  Note that if you
        wish to NFS-mount the sudoers file this must be group
        readable.  This value may overridden at run-time in the
        sudo.conf file.  The default mode is 0440.

  --with-sudoers-uid=UID
        User id that "owns" the sudoers file.  Note that this is
        the numeric id, *not* the symbolic name.  This value may
        overridden at run-time in the sudo.conf file.  The default
        is 0.

  --with-sudoers-gid=GID
        Group id that "owns" the sudoers file.  Note that this is
        the numeric id, *not* the symbolic name.  This value may
        overridden at run-time in the sudo.conf file.  The default
        is 0.

  --with-timeout=NUMBER
        Number of minutes that can elapse before sudo will ask for a passwd
        again.  The default is 5, set this to 0 to always prompt for a password.
        Sudoers option: timestamp_timeout

  --with-tty-tickets=no, --without-tty-tickets
        By default, sudo uses a different ticket file for each user/tty combo.
        With this option disabled, a single ticket will be used for all
        of a user's login sessions.
        Sudoers option: tty_tickets

  --with-umask=MASK
        Umask to use when running the root command.  The default is 0022.
        Sudoers option: umask

  --with-umask=no, --without-umask
        Preserves the umask of the user invoking sudo.
        Sudoers option: !umask

  --with-umask-override
        Use the umask specified in sudoers even if it is less restrictive
        than the user's.  The default is to use the intersection of the
        user's umask and the umask specified in sudoers.
        Sudoers option: umask_override

OS dependent notes
==================

HP-UX:
    The default C compiler shipped with HP-UX is not an ANSI compiler.
    You must use either the HP ANSI C compiler or gcc to build sudo.
    Binary packages of gcc are available from http://hpux.connect.org.uk/.

    To prevent PAM from overriding the value of umask on HP-UX 11,
    you will need to add a line like the following to /etc/pam.conf:

    sudo        session required        libpam_hpsec.so.1 bypass_umask

    If every command run via sudo displays information about the last
    successful login and the last authentication failure you should
    make use an /etc/pam.conf line like:

    sudo        session required        libpam_hpsec.so.1 bypass_umask bypass_last_login

Linux:
    PAM and LDAP headers are not installed by default on most Linux
    systems.  You will need to install the "pam-dev" package if
    /usr/include/security/pam_appl.h is not present on your system.
    If you wish to build with LDAP support you will also need the
    openldap-devel package.

Mac OS X:
    The pseudo-tty support in the Mac OS X kernel has bugs related
    to its handling of the SIGTSTP, SIGTTIN and SIGTTOU signals.
    It does not restart reads and writes when those signals are
    delivered.  This may cause problems for some commands when I/O
    logging is enabled.  The issue has been reported to Apple and
    is bug id #7952709.

Solaris:
    You need to have a C compiler in order to build sudo.  Since
    Solaris does not come with one by default this means that you
    either need to either install the Solaris Studio compiler suite,
    available for free from www.oracle.com, or install the GNU C
    compiler (gcc) which is can be installed via the pkg utility
    on Solaris 11 and higher and is distributed on the Solaris
    Companion CD for older Solaris releases.  You can also download
    gcc packages from http://www.opencsw.org/packages/CSWgcc4core/

SunOS 4.x:
    SunOS does not ship with an ANSI C compiler.  You will need to
    install an ANSI compiler such as gcc to build sudo.

    The /bin/sh shipped with SunOS blows up while running configure.
    You can work around this by installing bash or zsh.  If you
    have bash or zsh in your path, configure will use it automatically.