| 1 | Copyright 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software | 
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| 2 | Foundation, Inc. | 
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| 3 |   | 
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| 4 |    This file is free documentation; the Free Software Foundation gives | 
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| 5 | unlimited permission to copy, distribute and modify it. | 
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| 6 |   | 
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| 7 | Basic Installation | 
1 | Basic Installation | 
| 8 | ================== | 
2 | ================== | 
| 9 |  | 
3 |  | 
| 10 |    These are generic installation instructions. | 
4 |    These are generic installation instructions. | 
| 11 |  | 
5 |  | 
| 12 |    The `configure' shell script attempts to guess correct values for | 
6 |    The `configure' shell script attempts to guess correct values for | 
| 13 | various system-dependent variables used during compilation.  It uses | 
7 | various system-dependent variables used during compilation.  It uses | 
| 14 | those values to create a `Makefile' in each directory of the package. | 
8 | those values to create a `Makefile' in each directory of the package. | 
| 15 | It may also create one or more `.h' files containing system-dependent | 
9 | It may also create one or more `.h' files containing system-dependent | 
| 16 | definitions.  Finally, it creates a shell script `config.status' that | 
10 | definitions.  Finally, it creates a shell script `config.status' that | 
| 17 | you can run in the future to recreate the current configuration, and a | 
11 | you can run in the future to recreate the current configuration, a file | 
| 18 | file `config.log' containing compiler output (useful mainly for | 
12 | `config.cache' that saves the results of its tests to speed up | 
| 19 | debugging `configure'). | 
13 | reconfiguring, and a file `config.log' containing compiler output | 
| 20 |   | 
14 | (useful mainly for debugging `configure'). | 
| 21 |    It can also use an optional file (typically called `config.cache' | 
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| 22 | and enabled with `--cache-file=config.cache' or simply `-C') that saves | 
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| 23 | the results of its tests to speed up reconfiguring.  (Caching is | 
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| 24 | disabled by default to prevent problems with accidental use of stale | 
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| 25 | cache files.) | 
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| 26 |  | 
15 |  | 
| 27 |    If you need to do unusual things to compile the package, please try | 
16 |    If you need to do unusual things to compile the package, please try | 
| 28 | to figure out how `configure' could check whether to do them, and mail | 
17 | to figure out how `configure' could check whether to do them, and mail | 
| 29 | diffs or instructions to the address given in the `README' so they can | 
18 | diffs or instructions to the address given in the `README' so they can | 
| 30 | be considered for the next release.  If you are using the cache, and at | 
19 | be considered for the next release.  If at some point `config.cache' | 
| 31 | some point `config.cache' contains results you don't want to keep, you | 
20 | contains results you don't want to keep, you may remove or edit it. | 
| 32 | may remove or edit it. | 
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| 33 |  | 
21 |  | 
| 34 |    The file `configure.ac' (or `configure.in') is used to create | 
22 |    The file `configure.in' is used to create `configure' by a program | 
| 35 | `configure' by a program called `autoconf'.  You only need | 
23 | called `autoconf'.  You only need `configure.in' if you want to change | 
| 36 | `configure.ac' if you want to change it or regenerate `configure' using | 
24 | it or regenerate `configure' using a newer version of `autoconf'. | 
| 37 | a newer version of `autoconf'. | 
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| 38 |  | 
25 |  | 
| 39 | The simplest way to compile this package is: | 
26 | The simplest way to compile this package is: | 
| 40 |  | 
27 |  | 
| 41 |   1. `cd' to the directory containing the package's source code and type | 
28 |   1. `cd' to the directory containing the package's source code and type | 
| 42 |      `./configure' to configure the package for your system.  If you're | 
29 |      `./configure' to configure the package for your system.  If you're | 
| … |  | 
… |  | 
| 66 |  | 
53 |  | 
| 67 | Compilers and Options | 
54 | Compilers and Options | 
| 68 | ===================== | 
55 | ===================== | 
| 69 |  | 
56 |  | 
| 70 |    Some systems require unusual options for compilation or linking that | 
57 |    Some systems require unusual options for compilation or linking that | 
| 71 | the `configure' script does not know about.  Run `./configure --help' | 
58 | the `configure' script does not know about.  You can give `configure' | 
| 72 | for details on some of the pertinent environment variables. | 
59 | initial values for variables by setting them in the environment.  Using | 
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60 | a Bourne-compatible shell, you can do that on the command line like | 
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61 | this: | 
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62 |      CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure | 
| 73 |  | 
63 |  | 
| 74 |    You can give `configure' initial values for configuration parameters | 
64 | Or on systems that have the `env' program, you can do it like this: | 
| 75 | by setting variables in the command line or in the environment.  Here | 
65 |      env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure | 
| 76 | is an example: | 
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| 77 |   | 
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| 78 |      ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix | 
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| 79 |   | 
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| 80 |    *Note Defining Variables::, for more details. | 
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| 81 |  | 
66 |  | 
| 82 | Compiling For Multiple Architectures | 
67 | Compiling For Multiple Architectures | 
| 83 | ==================================== | 
68 | ==================================== | 
| 84 |  | 
69 |  | 
| 85 |    You can compile the package for more than one kind of computer at the | 
70 |    You can compile the package for more than one kind of computer at the | 
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| 88 | supports the `VPATH' variable, such as GNU `make'.  `cd' to the | 
73 | supports the `VPATH' variable, such as GNU `make'.  `cd' to the | 
| 89 | directory where you want the object files and executables to go and run | 
74 | directory where you want the object files and executables to go and run | 
| 90 | the `configure' script.  `configure' automatically checks for the | 
75 | the `configure' script.  `configure' automatically checks for the | 
| 91 | source code in the directory that `configure' is in and in `..'. | 
76 | source code in the directory that `configure' is in and in `..'. | 
| 92 |  | 
77 |  | 
| 93 |    If you have to use a `make' that does not support the `VPATH' | 
78 |    If you have to use a `make' that does not supports the `VPATH' | 
| 94 | variable, you have to compile the package for one architecture at a | 
79 | variable, you have to compile the package for one architecture at a time | 
| 95 | time in the source code directory.  After you have installed the | 
80 | in the source code directory.  After you have installed the package for | 
| 96 | package for one architecture, use `make distclean' before reconfiguring | 
81 | one architecture, use `make distclean' before reconfiguring for another | 
| 97 | for another architecture. | 
82 | architecture. | 
| 98 |  | 
83 |  | 
| 99 | Installation Names | 
84 | Installation Names | 
| 100 | ================== | 
85 | ================== | 
| 101 |  | 
86 |  | 
| 102 |    By default, `make install' will install the package's files in | 
87 |    By default, `make install' will install the package's files in | 
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| 135 | `--x-libraries=DIR' to specify their locations. | 
120 | `--x-libraries=DIR' to specify their locations. | 
| 136 |  | 
121 |  | 
| 137 | Specifying the System Type | 
122 | Specifying the System Type | 
| 138 | ========================== | 
123 | ========================== | 
| 139 |  | 
124 |  | 
| 140 |    There may be some features `configure' cannot figure out | 
125 |    There may be some features `configure' can not figure out | 
| 141 | automatically, but needs to determine by the type of machine the package | 
126 | automatically, but needs to determine by the type of host the package | 
| 142 | will run on.  Usually, assuming the package is built to be run on the | 
127 | will run on.  Usually `configure' can figure that out, but if it prints | 
| 143 | _same_ architectures, `configure' can figure that out, but if it prints | 
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| 144 | a message saying it cannot guess the machine type, give it the | 
128 | a message saying it can not guess the host type, give it the | 
| 145 | `--build=TYPE' option.  TYPE can either be a short name for the system | 
129 | `--host=TYPE' option.  TYPE can either be a short name for the system | 
| 146 | type, such as `sun4', or a canonical name which has the form: | 
130 | type, such as `sun4', or a canonical name with three fields: | 
| 147 |   | 
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| 148 |      CPU-COMPANY-SYSTEM | 
131 |      CPU-COMPANY-SYSTEM | 
| 149 |  | 
132 |  | 
| 150 | where SYSTEM can have one of these forms: | 
133 | See the file `config.sub' for the possible values of each field.  If | 
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134 | `config.sub' isn't included in this package, then this package doesn't | 
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135 | need to know the host type. | 
| 151 |  | 
136 |  | 
| 152 |      OS KERNEL-OS | 
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| 153 |   | 
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| 154 |    See the file `config.sub' for the possible values of each field.  If | 
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| 155 | `config.sub' isn't included in this package, then this package doesn't | 
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| 156 | need to know the machine type. | 
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| 157 |   | 
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| 158 |    If you are _building_ compiler tools for cross-compiling, you should | 
137 |    If you are building compiler tools for cross-compiling, you can also | 
| 159 | use the `--target=TYPE' option to select the type of system they will | 
138 | use the `--target=TYPE' option to select the type of system they will | 
| 160 | produce code for. | 
139 | produce code for and the `--build=TYPE' option to select the type of | 
| 161 |   | 
140 | system on which you are compiling the package. | 
| 162 |    If you want to _use_ a cross compiler, that generates code for a | 
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| 163 | platform different from the build platform, you should specify the | 
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| 164 | "host" platform (i.e., that on which the generated programs will | 
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| 165 | eventually be run) with `--host=TYPE'. | 
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| 166 |  | 
141 |  | 
| 167 | Sharing Defaults | 
142 | Sharing Defaults | 
| 168 | ================ | 
143 | ================ | 
| 169 |  | 
144 |  | 
| 170 |    If you want to set default values for `configure' scripts to share, | 
145 |    If you want to set default values for `configure' scripts to share, | 
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| 173 | `configure' looks for `PREFIX/share/config.site' if it exists, then | 
148 | `configure' looks for `PREFIX/share/config.site' if it exists, then | 
| 174 | `PREFIX/etc/config.site' if it exists.  Or, you can set the | 
149 | `PREFIX/etc/config.site' if it exists.  Or, you can set the | 
| 175 | `CONFIG_SITE' environment variable to the location of the site script. | 
150 | `CONFIG_SITE' environment variable to the location of the site script. | 
| 176 | A warning: not all `configure' scripts look for a site script. | 
151 | A warning: not all `configure' scripts look for a site script. | 
| 177 |  | 
152 |  | 
| 178 | Defining Variables | 
153 | Operation Controls | 
| 179 | ================== | 
154 | ================== | 
| 180 |   | 
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| 181 |    Variables not defined in a site shell script can be set in the | 
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| 182 | environment passed to `configure'.  However, some packages may run | 
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| 183 | configure again during the build, and the customized values of these | 
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| 184 | variables may be lost.  In order to avoid this problem, you should set | 
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| 185 | them in the `configure' command line, using `VAR=value'.  For example: | 
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| 186 |   | 
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| 187 |      ./configure CC=/usr/local2/bin/gcc | 
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| 188 |   | 
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| 189 | will cause the specified gcc to be used as the C compiler (unless it is | 
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| 190 | overridden in the site shell script). | 
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| 191 |   | 
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| 192 | `configure' Invocation | 
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| 193 | ====================== | 
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| 194 |  | 
155 |  | 
| 195 |    `configure' recognizes the following options to control how it | 
156 |    `configure' recognizes the following options to control how it | 
| 196 | operates. | 
157 | operates. | 
| 197 |  | 
158 |  | 
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159 | `--cache-file=FILE' | 
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160 |      Use and save the results of the tests in FILE instead of | 
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161 |      `./config.cache'.  Set FILE to `/dev/null' to disable caching, for | 
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162 |      debugging `configure'. | 
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163 |   | 
| 198 | `--help' | 
164 | `--help' | 
| 199 | `-h' | 
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| 200 |      Print a summary of the options to `configure', and exit. | 
165 |      Print a summary of the options to `configure', and exit. | 
| 201 |   | 
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| 202 | `--version' | 
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| 203 | `-V' | 
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| 204 |      Print the version of Autoconf used to generate the `configure' | 
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| 205 |      script, and exit. | 
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| 206 |   | 
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| 207 | `--cache-file=FILE' | 
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| 208 |      Enable the cache: use and save the results of the tests in FILE, | 
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| 209 |      traditionally `config.cache'.  FILE defaults to `/dev/null' to | 
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| 210 |      disable caching. | 
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| 211 |   | 
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| 212 | `--config-cache' | 
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| 213 | `-C' | 
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| 214 |      Alias for `--cache-file=config.cache'. | 
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| 215 |  | 
166 |  | 
| 216 | `--quiet' | 
167 | `--quiet' | 
| 217 | `--silent' | 
168 | `--silent' | 
| 218 | `-q' | 
169 | `-q' | 
| 219 |      Do not print messages saying which checks are being made.  To | 
170 |      Do not print messages saying which checks are being made.  To | 
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| 222 |  | 
173 |  | 
| 223 | `--srcdir=DIR' | 
174 | `--srcdir=DIR' | 
| 224 |      Look for the package's source code in directory DIR.  Usually | 
175 |      Look for the package's source code in directory DIR.  Usually | 
| 225 |      `configure' can determine that directory automatically. | 
176 |      `configure' can determine that directory automatically. | 
| 226 |  | 
177 |  | 
| 227 | `configure' also accepts some other, not widely useful, options.  Run | 
178 | `--version' | 
| 228 | `configure --help' for more details. | 
179 |      Print the version of Autoconf used to generate the `configure' | 
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180 |      script, and exit. | 
| 229 |  | 
181 |  | 
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182 | `configure' also accepts some other, not widely useful, options. |