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lxdream.org :: lxdream/INSTALL
lxdream 0.9.1
released Jun 29
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filename INSTALL
changeset 179:18dacd91aa73
author nkeynes
date Fri May 29 18:47:05 2015 +1000 (4 years ago)
permissions -rw-r--r--
last change Fix test case
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     1 Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
     2 Foundation, Inc.
     4    This file is free documentation; the Free Software Foundation gives
     5 unlimited permission to copy, distribute and modify it.
     7 Basic Installation
     8 ==================
    10    These are generic installation instructions.
    12    The `configure' shell script attempts to guess correct values for
    13 various system-dependent variables used during compilation.  It uses
    14 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
    16 definitions.  Finally, it creates a shell script `config.status' that
    17 you can run in the future to recreate the current configuration, and a
    18 file `config.log' containing compiler output (useful mainly for
    19 debugging `configure').
    21    It can also use an optional file (typically called `config.cache'
    22 and enabled with `--cache-file=config.cache' or simply `-C') that saves
    23 the results of its tests to speed up reconfiguring.  (Caching is
    24 disabled by default to prevent problems with accidental use of stale
    25 cache files.)
    27    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
    29 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
    31 some point `config.cache' contains results you don't want to keep, you
    32 may remove or edit it.
    34    The file `configure.ac' (or `configure.in') is used to create
    35 `configure' by a program called `autoconf'.  You only need
    36 `configure.ac' if you want to change it or regenerate `configure' using
    37 a newer version of `autoconf'.
    39 The simplest way to compile this package is:
    41   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
    43      using `csh' on an old version of System V, you might need to type
    44      `sh ./configure' instead to prevent `csh' from trying to execute
    45      `configure' itself.
    47      Running `configure' takes awhile.  While running, it prints some
    48      messages telling which features it is checking for.
    50   2. Type `make' to compile the package.
    52   3. Optionally, type `make check' to run any self-tests that come with
    53      the package.
    55   4. Type `make install' to install the programs and any data files and
    56      documentation.
    58   5. You can remove the program binaries and object files from the
    59      source code directory by typing `make clean'.  To also remove the
    60      files that `configure' created (so you can compile the package for
    61      a different kind of computer), type `make distclean'.  There is
    62      also a `make maintainer-clean' target, but that is intended mainly
    63      for the package's developers.  If you use it, you may have to get
    64      all sorts of other programs in order to regenerate files that came
    65      with the distribution.
    67 Compilers and Options
    68 =====================
    70    Some systems require unusual options for compilation or linking that
    71 the `configure' script does not know about.  Run `./configure --help'
    72 for details on some of the pertinent environment variables.
    74    You can give `configure' initial values for configuration parameters
    75 by setting variables in the command line or in the environment.  Here
    76 is an example:
    78      ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
    80    *Note Defining Variables::, for more details.
    82 Compiling For Multiple Architectures
    83 ====================================
    85    You can compile the package for more than one kind of computer at the
    86 same time, by placing the object files for each architecture in their
    87 own directory.  To do this, you must use a version of `make' that
    88 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
    90 the `configure' script.  `configure' automatically checks for the
    91 source code in the directory that `configure' is in and in `..'.
    93    If you have to use a `make' that does not support the `VPATH'
    94 variable, you have to compile the package for one architecture at a
    95 time in the source code directory.  After you have installed the
    96 package for one architecture, use `make distclean' before reconfiguring
    97 for another architecture.
    99 Installation Names
   100 ==================
   102    By default, `make install' will install the package's files in
   103 `/usr/local/bin', `/usr/local/man', etc.  You can specify an
   104 installation prefix other than `/usr/local' by giving `configure' the
   105 option `--prefix=PATH'.
   107    You can specify separate installation prefixes for
   108 architecture-specific files and architecture-independent files.  If you
   109 give `configure' the option `--exec-prefix=PATH', the package will use
   110 PATH as the prefix for installing programs and libraries.
   111 Documentation and other data files will still use the regular prefix.
   113    In addition, if you use an unusual directory layout you can give
   114 options like `--bindir=PATH' to specify different values for particular
   115 kinds of files.  Run `configure --help' for a list of the directories
   116 you can set and what kinds of files go in them.
   118    If the package supports it, you can cause programs to be installed
   119 with an extra prefix or suffix on their names by giving `configure' the
   120 option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
   122 Optional Features
   123 =================
   125    Some packages pay attention to `--enable-FEATURE' options to
   126 `configure', where FEATURE indicates an optional part of the package.
   127 They may also pay attention to `--with-PACKAGE' options, where PACKAGE
   128 is something like `gnu-as' or `x' (for the X Window System).  The
   129 `README' should mention any `--enable-' and `--with-' options that the
   130 package recognizes.
   132    For packages that use the X Window System, `configure' can usually
   133 find the X include and library files automatically, but if it doesn't,
   134 you can use the `configure' options `--x-includes=DIR' and
   135 `--x-libraries=DIR' to specify their locations.
   137 Specifying the System Type
   138 ==========================
   140    There may be some features `configure' cannot figure out
   141 automatically, but needs to determine by the type of machine the package
   142 will run on.  Usually, assuming the package is built to be run on the
   143 _same_ architectures, `configure' can figure that out, but if it prints
   144 a message saying it cannot guess the machine type, give it the
   145 `--build=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:
   148      CPU-COMPANY-SYSTEM
   150 where SYSTEM can have one of these forms:
   152      OS KERNEL-OS
   154    See the file `config.sub' for the possible values of each field.  If
   155 `config.sub' isn't included in this package, then this package doesn't
   156 need to know the machine type.
   158    If you are _building_ compiler tools for cross-compiling, you should
   159 use the `--target=TYPE' option to select the type of system they will
   160 produce code for.
   162    If you want to _use_ a cross compiler, that generates code for a
   163 platform different from the build platform, you should specify the
   164 "host" platform (i.e., that on which the generated programs will
   165 eventually be run) with `--host=TYPE'.
   167 Sharing Defaults
   168 ================
   170    If you want to set default values for `configure' scripts to share,
   171 you can create a site shell script called `config.site' that gives
   172 default values for variables like `CC', `cache_file', and `prefix'.
   173 `configure' looks for `PREFIX/share/config.site' if it exists, then
   174 `PREFIX/etc/config.site' if it exists.  Or, you can set the
   175 `CONFIG_SITE' environment variable to the location of the site script.
   176 A warning: not all `configure' scripts look for a site script.
   178 Defining Variables
   179 ==================
   181    Variables not defined in a site shell script can be set in the
   182 environment passed to `configure'.  However, some packages may run
   183 configure again during the build, and the customized values of these
   184 variables may be lost.  In order to avoid this problem, you should set
   185 them in the `configure' command line, using `VAR=value'.  For example:
   187      ./configure CC=/usr/local2/bin/gcc
   189 will cause the specified gcc to be used as the C compiler (unless it is
   190 overridden in the site shell script).
   192 `configure' Invocation
   193 ======================
   195    `configure' recognizes the following options to control how it
   196 operates.
   198 `--help'
   199 `-h'
   200      Print a summary of the options to `configure', and exit.
   202 `--version'
   203 `-V'
   204      Print the version of Autoconf used to generate the `configure'
   205      script, and exit.
   207 `--cache-file=FILE'
   208      Enable the cache: use and save the results of the tests in FILE,
   209      traditionally `config.cache'.  FILE defaults to `/dev/null' to
   210      disable caching.
   212 `--config-cache'
   213 `-C'
   214      Alias for `--cache-file=config.cache'.
   216 `--quiet'
   217 `--silent'
   218 `-q'
   219      Do not print messages saying which checks are being made.  To
   220      suppress all normal output, redirect it to `/dev/null' (any error
   221      messages will still be shown).
   223 `--srcdir=DIR'
   224      Look for the package's source code in directory DIR.  Usually
   225      `configure' can determine that directory automatically.
   227 `configure' also accepts some other, not widely useful, options.  Run
   228 `configure --help' for more details.
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