| 1 | Copyright 1994, 1995, 1996, 1999, 2000, 2001 Free Software Foundation, | 1 | Installation Instructions | 
| 2 | Inc. | 2 | ************************* | 
| 3 |  | 3 |  | 
|  |  | 4 | Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004 Free | 
|  |  | 5 | Software Foundation, Inc. | 
|  |  | 6 |  | 
| 4 | This file is free documentation; the Free Software Foundation gives | 7 | This file is free documentation; the Free Software Foundation gives | 
| 5 | unlimited permission to copy, distribute and modify it. | 8 | unlimited permission to copy, distribute and modify it. | 
| 6 |  | 9 |  | 
| 7 | Basic Installation | 10 | Basic Installation | 
| 8 | ================== | 11 | ================== | 
| 9 |  | 12 |  | 
| 10 | These are generic installation instructions. | 13 | These are generic installation instructions. | 
| 11 |  | 14 |  | 
| 12 | The `configure' shell script attempts to guess correct values for | 15 | The `configure' shell script attempts to guess correct values for | 
| 13 | various system-dependent variables used during compilation.  It uses | 16 | various system-dependent variables used during compilation.  It uses | 
| 14 | those values to create a `Makefile' in each directory of the package. | 17 | 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 | 18 | It may also create one or more `.h' files containing system-dependent | 
| … |  | … |  | 
| 65 | with the distribution. | 68 | with the distribution. | 
| 66 |  | 69 |  | 
| 67 | Compilers and Options | 70 | Compilers and Options | 
| 68 | ===================== | 71 | ===================== | 
| 69 |  | 72 |  | 
| 70 | Some systems require unusual options for compilation or linking that | 73 | Some systems require unusual options for compilation or linking that the | 
| 71 | the `configure' script does not know about.  Run `./configure --help' | 74 | `configure' script does not know about.  Run `./configure --help' for | 
| 72 | for details on some of the pertinent environment variables. | 75 | details on some of the pertinent environment variables. | 
| 73 |  | 76 |  | 
| 74 | You can give `configure' initial values for variables by setting | 77 | You can give `configure' initial values for configuration parameters | 
| 75 | them in the environment.  You can do that on the command line like this: | 78 | by setting variables in the command line or in the environment.  Here | 
|  |  | 79 | is an example: | 
| 76 |  | 80 |  | 
| 77 | ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix | 81 | ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix | 
| 78 |  | 82 |  | 
| 79 | *Note Defining Variables::, for more details. | 83 | *Note Defining Variables::, for more details. | 
| 80 |  | 84 |  | 
| 81 | Compiling For Multiple Architectures | 85 | Compiling For Multiple Architectures | 
| 82 | ==================================== | 86 | ==================================== | 
| 83 |  | 87 |  | 
| 84 | You can compile the package for more than one kind of computer at the | 88 | You can compile the package for more than one kind of computer at the | 
| 85 | same time, by placing the object files for each architecture in their | 89 | same time, by placing the object files for each architecture in their | 
| 86 | own directory.  To do this, you must use a version of `make' that | 90 | own directory.  To do this, you must use a version of `make' that | 
| 87 | supports the `VPATH' variable, such as GNU `make'.  `cd' to the | 91 | supports the `VPATH' variable, such as GNU `make'.  `cd' to the | 
| 88 | directory where you want the object files and executables to go and run | 92 | directory where you want the object files and executables to go and run | 
| 89 | the `configure' script.  `configure' automatically checks for the | 93 | the `configure' script.  `configure' automatically checks for the | 
| … |  | … |  | 
| 96 | for another architecture. | 100 | for another architecture. | 
| 97 |  | 101 |  | 
| 98 | Installation Names | 102 | Installation Names | 
| 99 | ================== | 103 | ================== | 
| 100 |  | 104 |  | 
| 101 | By default, `make install' will install the package's files in | 105 | By default, `make install' will install the package's files in | 
| 102 | `/usr/local/bin', `/usr/local/man', etc.  You can specify an | 106 | `/usr/local/bin', `/usr/local/man', etc.  You can specify an | 
| 103 | installation prefix other than `/usr/local' by giving `configure' the | 107 | installation prefix other than `/usr/local' by giving `configure' the | 
| 104 | option `--prefix=PATH'. | 108 | option `--prefix=PREFIX'. | 
| 105 |  | 109 |  | 
| 106 | You can specify separate installation prefixes for | 110 | You can specify separate installation prefixes for | 
| 107 | architecture-specific files and architecture-independent files.  If you | 111 | architecture-specific files and architecture-independent files.  If you | 
| 108 | give `configure' the option `--exec-prefix=PATH', the package will use | 112 | give `configure' the option `--exec-prefix=PREFIX', the package will | 
| 109 | PATH as the prefix for installing programs and libraries. | 113 | use PREFIX as the prefix for installing programs and libraries. | 
| 110 | Documentation and other data files will still use the regular prefix. | 114 | Documentation and other data files will still use the regular prefix. | 
| 111 |  | 115 |  | 
| 112 | In addition, if you use an unusual directory layout you can give | 116 | In addition, if you use an unusual directory layout you can give | 
| 113 | options like `--bindir=PATH' to specify different values for particular | 117 | options like `--bindir=DIR' to specify different values for particular | 
| 114 | kinds of files.  Run `configure --help' for a list of the directories | 118 | kinds of files.  Run `configure --help' for a list of the directories | 
| 115 | you can set and what kinds of files go in them. | 119 | you can set and what kinds of files go in them. | 
| 116 |  | 120 |  | 
| 117 | If the package supports it, you can cause programs to be installed | 121 | If the package supports it, you can cause programs to be installed | 
| 118 | with an extra prefix or suffix on their names by giving `configure' the | 122 | with an extra prefix or suffix on their names by giving `configure' the | 
| 119 | option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. | 123 | option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. | 
| 120 |  | 124 |  | 
| 121 | Optional Features | 125 | Optional Features | 
| 122 | ================= | 126 | ================= | 
| 123 |  | 127 |  | 
| 124 | Some packages pay attention to `--enable-FEATURE' options to | 128 | Some packages pay attention to `--enable-FEATURE' options to | 
| 125 | `configure', where FEATURE indicates an optional part of the package. | 129 | `configure', where FEATURE indicates an optional part of the package. | 
| 126 | They may also pay attention to `--with-PACKAGE' options, where PACKAGE | 130 | They may also pay attention to `--with-PACKAGE' options, where PACKAGE | 
| 127 | is something like `gnu-as' or `x' (for the X Window System).  The | 131 | is something like `gnu-as' or `x' (for the X Window System).  The | 
| 128 | `README' should mention any `--enable-' and `--with-' options that the | 132 | `README' should mention any `--enable-' and `--with-' options that the | 
| 129 | package recognizes. | 133 | package recognizes. | 
| … |  | … |  | 
| 134 | `--x-libraries=DIR' to specify their locations. | 138 | `--x-libraries=DIR' to specify their locations. | 
| 135 |  | 139 |  | 
| 136 | Specifying the System Type | 140 | Specifying the System Type | 
| 137 | ========================== | 141 | ========================== | 
| 138 |  | 142 |  | 
| 139 | There may be some features `configure' cannot figure out | 143 | There may be some features `configure' cannot figure out automatically, | 
| 140 | automatically, but needs to determine by the type of host the package | 144 | but needs to determine by the type of machine the package will run on. | 
|  |  | 145 | Usually, assuming the package is built to be run on the _same_ | 
| 141 | will run on.  Usually `configure' can figure that out, but if it prints | 146 | architectures, `configure' can figure that out, but if it prints a | 
| 142 | a message saying it cannot guess the host type, give it the | 147 | message saying it cannot guess the machine type, give it the | 
| 143 | `--build=TYPE' option.  TYPE can either be a short name for the system | 148 | `--build=TYPE' option.  TYPE can either be a short name for the system | 
| 144 | type, such as `sun4', or a canonical name which has the form: | 149 | type, such as `sun4', or a canonical name which has the form: | 
| 145 |  | 150 |  | 
| 146 | CPU-COMPANY-SYSTEM | 151 | CPU-COMPANY-SYSTEM | 
| 147 |  | 152 |  | 
| … |  | … |  | 
| 149 |  | 154 |  | 
| 150 | OS KERNEL-OS | 155 | OS KERNEL-OS | 
| 151 |  | 156 |  | 
| 152 | See the file `config.sub' for the possible values of each field.  If | 157 | See the file `config.sub' for the possible values of each field.  If | 
| 153 | `config.sub' isn't included in this package, then this package doesn't | 158 | `config.sub' isn't included in this package, then this package doesn't | 
| 154 | need to know the host type. | 159 | need to know the machine type. | 
| 155 |  | 160 |  | 
| 156 | If you are _building_ compiler tools for cross-compiling, you should | 161 | If you are _building_ compiler tools for cross-compiling, you should | 
| 157 | use the `--target=TYPE' option to select the type of system they will | 162 | use the `--target=TYPE' option to select the type of system they will | 
| 158 | produce code for. | 163 | produce code for. | 
| 159 |  | 164 |  | 
| 160 | If you want to _use_ a cross compiler, that generates code for a | 165 | If you want to _use_ a cross compiler, that generates code for a | 
| 161 | platform different from the build platform, you should specify the host | 166 | platform different from the build platform, you should specify the | 
| 162 | platform (i.e., that on which the generated programs will eventually be | 167 | "host" platform (i.e., that on which the generated programs will | 
| 163 | run) with `--host=TYPE'.  In this case, you should also specify the | 168 | eventually be run) with `--host=TYPE'. | 
| 164 | build platform with `--build=TYPE', because, in this case, it may not |  |  | 
| 165 | be possible to guess the build platform (it sometimes involves |  |  | 
| 166 | compiling and running simple test programs, and this can't be done if |  |  | 
| 167 | the compiler is a cross compiler). |  |  | 
| 168 |  | 169 |  | 
| 169 | Sharing Defaults | 170 | Sharing Defaults | 
| 170 | ================ | 171 | ================ | 
| 171 |  | 172 |  | 
| 172 | If you want to set default values for `configure' scripts to share, | 173 | If you want to set default values for `configure' scripts to share, you | 
| 173 | you can create a site shell script called `config.site' that gives | 174 | can create a site shell script called `config.site' that gives default | 
| 174 | default values for variables like `CC', `cache_file', and `prefix'. | 175 | values for variables like `CC', `cache_file', and `prefix'. | 
| 175 | `configure' looks for `PREFIX/share/config.site' if it exists, then | 176 | `configure' looks for `PREFIX/share/config.site' if it exists, then | 
| 176 | `PREFIX/etc/config.site' if it exists.  Or, you can set the | 177 | `PREFIX/etc/config.site' if it exists.  Or, you can set the | 
| 177 | `CONFIG_SITE' environment variable to the location of the site script. | 178 | `CONFIG_SITE' environment variable to the location of the site script. | 
| 178 | A warning: not all `configure' scripts look for a site script. | 179 | A warning: not all `configure' scripts look for a site script. | 
| 179 |  | 180 |  | 
| 180 | Defining Variables | 181 | Defining Variables | 
| 181 | ================== | 182 | ================== | 
| 182 |  | 183 |  | 
| 183 | Variables not defined in a site shell script can be set in the | 184 | Variables not defined in a site shell script can be set in the | 
| 184 | environment passed to `configure'.  However, some packages may run | 185 | environment passed to `configure'.  However, some packages may run | 
| 185 | configure again during the build, and the customized values of these | 186 | configure again during the build, and the customized values of these | 
| 186 | variables may be lost.  In order to avoid this problem, you should set | 187 | variables may be lost.  In order to avoid this problem, you should set | 
| 187 | them in the `configure' command line, using `VAR=value'.  For example: | 188 | them in the `configure' command line, using `VAR=value'.  For example: | 
| 188 |  | 189 |  | 
| … |  | … |  | 
| 192 | overridden in the site shell script). | 193 | overridden in the site shell script). | 
| 193 |  | 194 |  | 
| 194 | `configure' Invocation | 195 | `configure' Invocation | 
| 195 | ====================== | 196 | ====================== | 
| 196 |  | 197 |  | 
| 197 | `configure' recognizes the following options to control how it | 198 | `configure' recognizes the following options to control how it operates. | 
| 198 | operates. |  |  | 
| 199 |  | 199 |  | 
| 200 | `--help' | 200 | `--help' | 
| 201 | `-h' | 201 | `-h' | 
| 202 | Print a summary of the options to `configure', and exit. | 202 | Print a summary of the options to `configure', and exit. | 
| 203 |  | 203 |  |