1This file contains detailed but generic information on building and
2installing the C++ part of this project.  For shorter instructions,
3as well as instructions for compiling and installing the Java or
4Python parts, see README.
5
6======================================================================
7
8Copyright 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
9Foundation, Inc.
10
11   This file is free documentation; the Free Software Foundation gives
12unlimited permission to copy, distribute and modify it.
13
14
15Basic Installation
16==================
17
18   These are generic installation instructions.
19
20   The `configure' shell script attempts to guess correct values for
21various system-dependent variables used during compilation.  It uses
22those values to create a `Makefile' in each directory of the package.
23It may also create one or more `.h' files containing system-dependent
24definitions.  Finally, it creates a shell script `config.status' that
25you can run in the future to recreate the current configuration, and a
26file `config.log' containing compiler output (useful mainly for
27debugging `configure').
28
29   It can also use an optional file (typically called `config.cache'
30and enabled with `--cache-file=config.cache' or simply `-C') that saves
31the results of its tests to speed up reconfiguring.  (Caching is
32disabled by default to prevent problems with accidental use of stale
33cache files.)
34
35   If you need to do unusual things to compile the package, please try
36to figure out how `configure' could check whether to do them, and mail
37diffs or instructions to the address given in the `README' so they can
38be considered for the next release.  If you are using the cache, and at
39some point `config.cache' contains results you don't want to keep, you
40may remove or edit it.
41
42   The file `configure.ac' (or `configure.in') is used to create
43`configure' by a program called `autoconf'.  You only need
44`configure.ac' if you want to change it or regenerate `configure' using
45a newer version of `autoconf'.
46
47The simplest way to compile this package is:
48
49  1. `cd' to the directory containing the package's source code and type
50     `./configure' to configure the package for your system.  If you're
51     using `csh' on an old version of System V, you might need to type
52     `sh ./configure' instead to prevent `csh' from trying to execute
53     `configure' itself.
54
55     Running `configure' takes awhile.  While running, it prints some
56     messages telling which features it is checking for.
57
58  2. Type `make' to compile the package.
59
60  3. Optionally, type `make check' to run any self-tests that come with
61     the package.
62
63  4. Type `make install' to install the programs and any data files and
64     documentation.
65
66  5. You can remove the program binaries and object files from the
67     source code directory by typing `make clean'.  To also remove the
68     files that `configure' created (so you can compile the package for
69     a different kind of computer), type `make distclean'.  There is
70     also a `make maintainer-clean' target, but that is intended mainly
71     for the package's developers.  If you use it, you may have to get
72     all sorts of other programs in order to regenerate files that came
73     with the distribution.
74
75Compilers and Options
76=====================
77
78   Some systems require unusual options for compilation or linking that
79the `configure' script does not know about.  Run `./configure --help'
80for details on some of the pertinent environment variables.
81
82   You can give `configure' initial values for configuration parameters
83by setting variables in the command line or in the environment.  Here
84is an example:
85
86     ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
87
88   *Note Defining Variables::, for more details.
89
90Compiling For Multiple Architectures
91====================================
92
93   You can compile the package for more than one kind of computer at the
94same time, by placing the object files for each architecture in their
95own directory.  To do this, you must use a version of `make' that
96supports the `VPATH' variable, such as GNU `make'.  `cd' to the
97directory where you want the object files and executables to go and run
98the `configure' script.  `configure' automatically checks for the
99source code in the directory that `configure' is in and in `..'.
100
101   If you have to use a `make' that does not support the `VPATH'
102variable, you have to compile the package for one architecture at a
103time in the source code directory.  After you have installed the
104package for one architecture, use `make distclean' before reconfiguring
105for another architecture.
106
107Installation Names
108==================
109
110   By default, `make install' will install the package's files in
111`/usr/local/bin', `/usr/local/man', etc.  You can specify an
112installation prefix other than `/usr/local' by giving `configure' the
113option `--prefix=PATH'.
114
115   You can specify separate installation prefixes for
116architecture-specific files and architecture-independent files.  If you
117give `configure' the option `--exec-prefix=PATH', the package will use
118PATH as the prefix for installing programs and libraries.
119Documentation and other data files will still use the regular prefix.
120
121   In addition, if you use an unusual directory layout you can give
122options like `--bindir=PATH' to specify different values for particular
123kinds of files.  Run `configure --help' for a list of the directories
124you can set and what kinds of files go in them.
125
126   If the package supports it, you can cause programs to be installed
127with an extra prefix or suffix on their names by giving `configure' the
128option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
129
130Optional Features
131=================
132
133   Some packages pay attention to `--enable-FEATURE' options to
134`configure', where FEATURE indicates an optional part of the package.
135They may also pay attention to `--with-PACKAGE' options, where PACKAGE
136is something like `gnu-as' or `x' (for the X Window System).  The
137`README' should mention any `--enable-' and `--with-' options that the
138package recognizes.
139
140   For packages that use the X Window System, `configure' can usually
141find the X include and library files automatically, but if it doesn't,
142you can use the `configure' options `--x-includes=DIR' and
143`--x-libraries=DIR' to specify their locations.
144
145Specifying the System Type
146==========================
147
148   There may be some features `configure' cannot figure out
149automatically, but needs to determine by the type of machine the package
150will run on.  Usually, assuming the package is built to be run on the
151_same_ architectures, `configure' can figure that out, but if it prints
152a message saying it cannot guess the machine type, give it the
153`--build=TYPE' option.  TYPE can either be a short name for the system
154type, such as `sun4', or a canonical name which has the form:
155
156     CPU-COMPANY-SYSTEM
157
158where SYSTEM can have one of these forms:
159
160     OS KERNEL-OS
161
162   See the file `config.sub' for the possible values of each field.  If
163`config.sub' isn't included in this package, then this package doesn't
164need to know the machine type.
165
166   If you are _building_ compiler tools for cross-compiling, you should
167use the `--target=TYPE' option to select the type of system they will
168produce code for.
169
170   If you want to _use_ a cross compiler, that generates code for a
171platform different from the build platform, you should specify the
172"host" platform (i.e., that on which the generated programs will
173eventually be run) with `--host=TYPE'.
174
175Sharing Defaults
176================
177
178   If you want to set default values for `configure' scripts to share,
179you can create a site shell script called `config.site' that gives
180default values for variables like `CC', `cache_file', and `prefix'.
181`configure' looks for `PREFIX/share/config.site' if it exists, then
182`PREFIX/etc/config.site' if it exists.  Or, you can set the
183`CONFIG_SITE' environment variable to the location of the site script.
184A warning: not all `configure' scripts look for a site script.
185
186Defining Variables
187==================
188
189   Variables not defined in a site shell script can be set in the
190environment passed to `configure'.  However, some packages may run
191configure again during the build, and the customized values of these
192variables may be lost.  In order to avoid this problem, you should set
193them in the `configure' command line, using `VAR=value'.  For example:
194
195     ./configure CC=/usr/local2/bin/gcc
196
197will cause the specified gcc to be used as the C compiler (unless it is
198overridden in the site shell script).
199
200`configure' Invocation
201======================
202
203   `configure' recognizes the following options to control how it
204operates.
205
206`--help'
207`-h'
208     Print a summary of the options to `configure', and exit.
209
210`--version'
211`-V'
212     Print the version of Autoconf used to generate the `configure'
213     script, and exit.
214
215`--cache-file=FILE'
216     Enable the cache: use and save the results of the tests in FILE,
217     traditionally `config.cache'.  FILE defaults to `/dev/null' to
218     disable caching.
219
220`--config-cache'
221`-C'
222     Alias for `--cache-file=config.cache'.
223
224`--quiet'
225`--silent'
226`-q'
227     Do not print messages saying which checks are being made.  To
228     suppress all normal output, redirect it to `/dev/null' (any error
229     messages will still be shown).
230
231`--srcdir=DIR'
232     Look for the package's source code in directory DIR.  Usually
233     `configure' can determine that directory automatically.
234
235`configure' also accepts some other, not widely useful, options.  Run
236`configure --help' for more details.
237
238