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1 Basic Installation
4 These are generic installation instructions.
6 The `configure' shell script attempts to guess correct values for
7 various system-dependent variables used during compilation. It uses
8 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
10 definitions. Finally, it creates a shell script `config.status' that
11 you can run in the future to recreate the current configuration, a file
12 `config.cache' that saves the results of its tests to speed up
13 reconfiguring, and a file `config.log' containing compiler output
14 (useful mainly for debugging `configure').
16 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
18 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'
20 contains results you don't want to keep, you may remove or edit it.
22 The file `configure.in' is used to create `configure' by a program
23 called `autoconf'. You only need `configure.in' if you want to change
24 it or regenerate `configure' using a newer version of `autoconf'.
26 The simplest way to compile this package is:
28 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
30 using `csh' on an old version of System V, you might need to type
31 `sh ./configure' instead to prevent `csh' from trying to execute
32 `configure' itself.
34 Running `configure' takes awhile. While running, it prints some
35 messages telling which features it is checking for.
37 2. Type `make' to compile the package.
39 3. Optionally, type `make check' to run any self-tests that come with
40 the package.
42 4. Type `make install' to install the programs and any data files and
45 5. You can remove the program binaries and object files from the
46 source code directory by typing `make clean'. To also remove the
47 files that `configure' created (so you can compile the package for
48 a different kind of computer), type `make distclean'. There is
49 also a `make maintainer-clean' target, but that is intended mainly
50 for the package's developers. If you use it, you may have to get
51 all sorts of other programs in order to regenerate files that came
52 with the distribution.
54 Compilers and Options
57 Some systems require unusual options for compilation or linking that
58 the `configure' script does not know about. You can give `configure'
59 initial values for variables by setting them in the environment. Using
60 a Bourne-compatible shell, you can do that on the command line like
62 CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
64 Or on systems that have the `env' program, you can do it like this:
65 env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
67 Compiling For Multiple Architectures
70 You can compile the package for more than one kind of computer at the
71 same time, by placing the object files for each architecture in their
72 own directory. To do this, you must use a version of `make' that
73 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
75 the `configure' script. `configure' automatically checks for the
76 source code in the directory that `configure' is in and in `..'.
78 If you have to use a `make' that does not supports the `VPATH'
79 variable, you have to compile the package for one architecture at a time
80 in the source code directory. After you have installed the package for
81 one architecture, use `make distclean' before reconfiguring for another
84 Installation Names
87 By default, `make install' will install the package's files in
88 `/usr/local/bin', `/usr/local/man', etc. You can specify an
89 installation prefix other than `/usr/local' by giving `configure' the
90 option `--prefix=PATH'.
92 You can specify separate installation prefixes for
93 architecture-specific files and architecture-independent files. If you
94 give `configure' the option `--exec-prefix=PATH', the package will use
95 PATH as the prefix for installing programs and libraries.
96 Documentation and other data files will still use the regular prefix.
98 In addition, if you use an unusual directory layout you can give
99 options like `--bindir=PATH' to specify different values for particular
100 kinds of files. Run `configure --help' for a list of the directories
101 you can set and what kinds of files go in them.
103 If the package supports it, you can cause programs to be installed
104 with an extra prefix or suffix on their names by giving `configure' the
105 option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
107 Optional Features
110 Some packages pay attention to `--enable-FEATURE' options to
111 `configure', where FEATURE indicates an optional part of the package.
112 They may also pay attention to `--with-PACKAGE' options, where PACKAGE
113 is something like `gnu-as' or `x' (for the X Window System). The
114 `README' should mention any `--enable-' and `--with-' options that the
115 package recognizes.
117 For packages that use the X Window System, `configure' can usually
118 find the X include and library files automatically, but if it doesn't,
119 you can use the `configure' options `--x-includes=DIR' and
120 `--x-libraries=DIR' to specify their locations.
122 Specifying the System Type
125 There may be some features `configure' can not figure out
126 automatically, but needs to determine by the type of host the package
127 will run on. Usually `configure' can figure that out, but if it prints
128 a message saying it can not guess the host type, give it the
129 `--host=TYPE' option. TYPE can either be a short name for the system
130 type, such as `sun4', or a canonical name with three fields:
133 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
135 need to know the host type.
137 If you are building compiler tools for cross-compiling, you can also
138 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
140 system on which you are compiling the package.
142 Sharing Defaults
145 If you want to set default values for `configure' scripts to share,
146 you can create a site shell script called `config.site' that gives
147 default values for variables like `CC', `cache_file', and `prefix'.
148 `configure' looks for `PREFIX/share/config.site' if it exists, then
149 `PREFIX/etc/config.site' if it exists. Or, you can set the
150 `CONFIG_SITE' environment variable to the location of the site script.
151 A warning: not all `configure' scripts look for a site script.
153 Operation Controls
156 `configure' recognizes the following options to control how it
160 Use and save the results of the tests in FILE instead of
161 `./config.cache'. Set FILE to `/dev/null' to disable caching, for
162 debugging `configure'.
165 Print a summary of the options to `configure', and exit.
170 Do not print messages saying which checks are being made. To
171 suppress all normal output, redirect it to `/dev/null' (any error
172 messages will still be shown).
175 Look for the package's source code in directory DIR. Usually
176 `configure' can determine that directory automatically.
179 Print the version of Autoconf used to generate the `configure'
180 script, and exit.
182 `configure' also accepts some other, not widely useful, options.