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