1 The following is a verbatim copy of the of Autoconf 2.12 generic
8 These are generic installation instructions.
10 The `configure' shell script attempts to guess correct values for
11 various system-dependent variables used during compilation. It uses
12 those values to create a `Makefile' in each directory of the package.
13 It may also create one or more `.h' files containing system-dependent
14 definitions. Finally, it creates a shell script `config.status' that
15 you can run in the future to recreate the current configuration, a file
16 `config.cache' that saves the results of its tests to speed up
17 reconfiguring, and a file `config.log' containing compiler output
18 (useful mainly for debugging `configure').
20 If you need to do unusual things to compile the package, please try
21 to figure out how `configure' could check whether to do them, and mail
22 diffs or instructions to the address given in the `README' so they can
23 be considered for the next release. If at some point `config.cache'
24 contains results you don't want to keep, you may remove or edit it.
26 The file `configure.in' is used to create `configure' by a program
27 called `autoconf'. You only need `configure.in' if you want to change
28 it or regenerate `configure' using a newer version of `autoconf'.
30 The simplest way to compile this package is:
32 1. `cd' to the directory containing the package's source code and type
33 `./configure' to configure the package for your system. If you're
34 using `csh' on an old version of System V, you might need to type
35 `sh ./configure' instead to prevent `csh' from trying to execute
38 Running `configure' takes awhile. While running, it prints some
39 messages telling which features it is checking for.
41 2. Type `make' to compile the package.
43 3. Optionally, type `make check' to run any self-tests that come with
46 4. Type `make install' to install the programs and any data files and
49 5. You can remove the program binaries and object files from the
50 source code directory by typing `make clean'. To also remove the
51 files that `configure' created (so you can compile the package for
52 a different kind of computer), type `make distclean'. There is
53 also a `make maintainer-clean' target, but that is intended mainly
54 for the package's developers. If you use it, you may have to get
55 all sorts of other programs in order to regenerate files that came
56 with the distribution.
61 Some systems require unusual options for compilation or linking that
62 the `configure' script does not know about. You can give `configure'
63 initial values for variables by setting them in the environment. Using
64 a Bourne-compatible shell, you can do that on the command line like
66 CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
68 Or on systems that have the `env' program, you can do it like this:
69 env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
71 Compiling For Multiple Architectures
72 ====================================
74 You can compile the package for more than one kind of computer at the
75 same time, by placing the object files for each architecture in their
76 own directory. To do this, you must use a version of `make' that
77 supports the `VPATH' variable, such as GNU `make'. `cd' to the
78 directory where you want the object files and executables to go and run
79 the `configure' script. `configure' automatically checks for the
80 source code in the directory that `configure' is in and in `..'.
82 If you have to use a `make' that does not supports the `VPATH'
83 variable, you have to compile the package for one architecture at a time
84 in the source code directory. After you have installed the package for
85 one architecture, use `make distclean' before reconfiguring for another
91 By default, `make install' will install the package's files in
92 `/usr/local/bin', `/usr/local/man', etc. You can specify an
93 installation prefix other than `/usr/local' by giving `configure' the
94 option `--prefix=PATH'.
96 You can specify separate installation prefixes for
97 architecture-specific files and architecture-independent files. If you
98 give `configure' the option `--exec-prefix=PATH', the package will use
99 PATH as the prefix for installing programs and libraries.
100 Documentation and other data files will still use the regular prefix.
102 In addition, if you use an unusual directory layout you can give
103 options like `--bindir=PATH' to specify different values for particular
104 kinds of files. Run `configure --help' for a list of the directories
105 you can set and what kinds of files go in them.
107 If the package supports it, you can cause programs to be installed
108 with an extra prefix or suffix on their names by giving `configure' the
109 option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
114 Some packages pay attention to `--enable-FEATURE' options to
115 `configure', where FEATURE indicates an optional part of the package.
116 They may also pay attention to `--with-PACKAGE' options, where PACKAGE
117 is something like `gnu-as' or `x' (for the X Window System). The
118 `README' should mention any `--enable-' and `--with-' options that the
121 For packages that use the X Window System, `configure' can usually
122 find the X include and library files automatically, but if it doesn't,
123 you can use the `configure' options `--x-includes=DIR' and
124 `--x-libraries=DIR' to specify their locations.
126 Specifying the System Type
127 ==========================
129 There may be some features `configure' can not figure out
130 automatically, but needs to determine by the type of host the package
131 will run on. Usually `configure' can figure that out, but if it prints
132 a message saying it can not guess the host type, give it the
133 `--host=TYPE' option. TYPE can either be a short name for the system
134 type, such as `sun4', or a canonical name with three fields:
137 See the file `config.sub' for the possible values of each field. If
138 `config.sub' isn't included in this package, then this package doesn't
139 need to know the host type.
141 If you are building compiler tools for cross-compiling, you can also
142 use the `--target=TYPE' option to select the type of system they will
143 produce code for and the `--build=TYPE' option to select the type of
144 system on which you are compiling the package.
149 If you want to set default values for `configure' scripts to share,
150 you can create a site shell script called `config.site' that gives
151 default values for variables like `CC', `cache_file', and `prefix'.
152 `configure' looks for `PREFIX/share/config.site' if it exists, then
153 `PREFIX/etc/config.site' if it exists. Or, you can set the
154 `CONFIG_SITE' environment variable to the location of the site script.
155 A warning: not all `configure' scripts look for a site script.
160 `configure' recognizes the following options to control how it
164 Use and save the results of the tests in FILE instead of
165 `./config.cache'. Set FILE to `/dev/null' to disable caching, for
166 debugging `configure'.
169 Print a summary of the options to `configure', and exit.
174 Do not print messages saying which checks are being made. To
175 suppress all normal output, redirect it to `/dev/null' (any error
176 messages will still be shown).
179 Look for the package's source code in directory DIR. Usually
180 `configure' can determine that directory automatically.
183 Print the version of Autoconf used to generate the `configure'
186 `configure' also accepts some other, not widely useful, options.