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Basic Installation
==================
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create
- a `Makefile' in each directory of the package;
- the `config.h' files containing system-dependent definitions;
- a shell script `config.status' that you can run in the future
to recreate the current configuration;
- the man pages super.1 and super.5;
- a file `config.cache' that saves the results of its tests to
speed up reconfiguring;
- and a file `config.log' containing compiler output (useful mainly
for debugging `configure').
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given at the bottom of the `README'
file, so they can be considered for the next release. If at some point
`config.cache' contains results you don't want to keep, you may remove
or edit it.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The simplest way to compile super is:
1. `cd' to the directory containing the super's source code and type
`./configure' to configure the package for your system. If you're
using `csh' on an old version of System V, you might need to type
`sh ./configure' instead to prevent `csh' from trying to execute
`configure' itself.
Running `configure' takes awhile. While running, it prints some
messages telling which features it is checking for.
Inspect the generated file `Makefile', and verify that its configuration
is satisfactory. If you have to adjust the makefile, please send
a description of your changes to the address given at the end of
the README file.
2. Type `make' to compile the package.
3. Type `make install' to install the programs and any data files and
documentation.
4. You can remove the program binaries and object files from the
source code directory by typing `make clean'. To also remove the
files that `configure' created (so you can compile the package for
a different kind of computer), type `make distclean'.
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
Or on systems that have the `env' program, you can do it like this:
env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you must use a version of `make' that
supports the `VPATH' variable, such as GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not supports the `VPATH'
variable, you have to compile the package for one architecture at a time
in the source code directory. After you have installed the package for
one architecture, use `make distclean' before reconfiguring for another
architecture.
Common Configure Options for Super
==================================
By default, super is built so that the package's files are installed
in /usr/local/bin, /usr/local/man, etc. You can control this with
options to configure as follows:
o PREFIX (override with --prefix=DIR) is set to /usr/local;
o PREFIX/bin (override with --exec-prefix=DIR) holds the "super" and
"setuid" binaries;
o PREFIX/man (override with --mandir=DIR) holds the man pages;
o PREFIX/etc (override with --sysconfdir=DIR) holds the configuration
file that super reads at runtime;
o PREFIX/var (override with --localstatedir=DIR) holds the timestamp
directory that super uses to keep track of when users last
told it their passwords.
Additionally, the rsyslog feature is enabled by default (see the man page,
super.5, for details); you can override this with --disable-rsyslog.
Run `configure --help' for more information.
Specifying the System Type
==========================
There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on. Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
CPU-COMPANY-SYSTEM
See the file `config.sub' for the possible values of each field. If
`config.sub' isn't included in this package, then this package doesn't
need to know the host type.
If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option to select the type of system they will
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share,
you can create a site shell script called `config.site' that gives
default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Operation Controls
==================
`configure' recognizes the following options to control how it
operates.
`--cache-file=FILE'
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made.
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.
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