INSTALL revision 2227fc13
12227fc13SmrgInstallation Instructions
22227fc13Smrg*************************
32227fc13Smrg
42227fc13SmrgCopyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
52227fc13Smrg2006, 2007, 2008 Free Software Foundation, Inc.
62227fc13Smrg
72227fc13Smrg   This file is free documentation; the Free Software Foundation gives
82227fc13Smrgunlimited permission to copy, distribute and modify it.
92227fc13Smrg
102227fc13SmrgBasic Installation
112227fc13Smrg==================
122227fc13Smrg
132227fc13Smrg   Briefly, the shell commands `./configure; make; make install' should
142227fc13Smrgconfigure, build, and install this package.  The following
152227fc13Smrgmore-detailed instructions are generic; see the `README' file for
162227fc13Smrginstructions specific to this package.
172227fc13Smrg
182227fc13Smrg   The `configure' shell script attempts to guess correct values for
192227fc13Smrgvarious system-dependent variables used during compilation.  It uses
202227fc13Smrgthose values to create a `Makefile' in each directory of the package.
212227fc13SmrgIt may also create one or more `.h' files containing system-dependent
222227fc13Smrgdefinitions.  Finally, it creates a shell script `config.status' that
232227fc13Smrgyou can run in the future to recreate the current configuration, and a
242227fc13Smrgfile `config.log' containing compiler output (useful mainly for
252227fc13Smrgdebugging `configure').
262227fc13Smrg
272227fc13Smrg   It can also use an optional file (typically called `config.cache'
282227fc13Smrgand enabled with `--cache-file=config.cache' or simply `-C') that saves
292227fc13Smrgthe results of its tests to speed up reconfiguring.  Caching is
302227fc13Smrgdisabled by default to prevent problems with accidental use of stale
312227fc13Smrgcache files.
322227fc13Smrg
332227fc13Smrg   If you need to do unusual things to compile the package, please try
342227fc13Smrgto figure out how `configure' could check whether to do them, and mail
352227fc13Smrgdiffs or instructions to the address given in the `README' so they can
362227fc13Smrgbe considered for the next release.  If you are using the cache, and at
372227fc13Smrgsome point `config.cache' contains results you don't want to keep, you
382227fc13Smrgmay remove or edit it.
392227fc13Smrg
402227fc13Smrg   The file `configure.ac' (or `configure.in') is used to create
412227fc13Smrg`configure' by a program called `autoconf'.  You need `configure.ac' if
422227fc13Smrgyou want to change it or regenerate `configure' using a newer version
432227fc13Smrgof `autoconf'.
442227fc13Smrg
452227fc13SmrgThe simplest way to compile this package is:
462227fc13Smrg
472227fc13Smrg  1. `cd' to the directory containing the package's source code and type
482227fc13Smrg     `./configure' to configure the package for your system.
492227fc13Smrg
502227fc13Smrg     Running `configure' might take a while.  While running, it prints
512227fc13Smrg     some messages telling which features it is checking for.
522227fc13Smrg
532227fc13Smrg  2. Type `make' to compile the package.
542227fc13Smrg
552227fc13Smrg  3. Optionally, type `make check' to run any self-tests that come with
562227fc13Smrg     the package.
572227fc13Smrg
582227fc13Smrg  4. Type `make install' to install the programs and any data files and
592227fc13Smrg     documentation.
602227fc13Smrg
612227fc13Smrg  5. You can remove the program binaries and object files from the
622227fc13Smrg     source code directory by typing `make clean'.  To also remove the
632227fc13Smrg     files that `configure' created (so you can compile the package for
642227fc13Smrg     a different kind of computer), type `make distclean'.  There is
652227fc13Smrg     also a `make maintainer-clean' target, but that is intended mainly
662227fc13Smrg     for the package's developers.  If you use it, you may have to get
672227fc13Smrg     all sorts of other programs in order to regenerate files that came
682227fc13Smrg     with the distribution.
692227fc13Smrg
702227fc13Smrg  6. Often, you can also type `make uninstall' to remove the installed
712227fc13Smrg     files again.
722227fc13Smrg
732227fc13SmrgCompilers and Options
742227fc13Smrg=====================
752227fc13Smrg
762227fc13Smrg   Some systems require unusual options for compilation or linking that
772227fc13Smrgthe `configure' script does not know about.  Run `./configure --help'
782227fc13Smrgfor details on some of the pertinent environment variables.
792227fc13Smrg
802227fc13Smrg   You can give `configure' initial values for configuration parameters
812227fc13Smrgby setting variables in the command line or in the environment.  Here
822227fc13Smrgis an example:
832227fc13Smrg
842227fc13Smrg     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
852227fc13Smrg
862227fc13Smrg   *Note Defining Variables::, for more details.
872227fc13Smrg
882227fc13SmrgCompiling For Multiple Architectures
892227fc13Smrg====================================
902227fc13Smrg
912227fc13Smrg   You can compile the package for more than one kind of computer at the
922227fc13Smrgsame time, by placing the object files for each architecture in their
932227fc13Smrgown directory.  To do this, you can use GNU `make'.  `cd' to the
942227fc13Smrgdirectory where you want the object files and executables to go and run
952227fc13Smrgthe `configure' script.  `configure' automatically checks for the
962227fc13Smrgsource code in the directory that `configure' is in and in `..'.
972227fc13Smrg
982227fc13Smrg   With a non-GNU `make', it is safer to compile the package for one
992227fc13Smrgarchitecture at a time in the source code directory.  After you have
1002227fc13Smrginstalled the package for one architecture, use `make distclean' before
1012227fc13Smrgreconfiguring for another architecture.
1022227fc13Smrg
1032227fc13Smrg   On MacOS X 10.5 and later systems, you can create libraries and
1042227fc13Smrgexecutables that work on multiple system types--known as "fat" or
1052227fc13Smrg"universal" binaries--by specifying multiple `-arch' options to the
1062227fc13Smrgcompiler but only a single `-arch' option to the preprocessor.  Like
1072227fc13Smrgthis:
1082227fc13Smrg
1092227fc13Smrg     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
1102227fc13Smrg                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
1112227fc13Smrg                 CPP="gcc -E" CXXCPP="g++ -E"
1122227fc13Smrg
1132227fc13Smrg   This is not guaranteed to produce working output in all cases, you
1142227fc13Smrgmay have to build one architecture at a time and combine the results
1152227fc13Smrgusing the `lipo' tool if you have problems.
1162227fc13Smrg
1172227fc13SmrgInstallation Names
1182227fc13Smrg==================
1192227fc13Smrg
1202227fc13Smrg   By default, `make install' installs the package's commands under
1212227fc13Smrg`/usr/local/bin', include files under `/usr/local/include', etc.  You
1222227fc13Smrgcan specify an installation prefix other than `/usr/local' by giving
1232227fc13Smrg`configure' the option `--prefix=PREFIX'.
1242227fc13Smrg
1252227fc13Smrg   You can specify separate installation prefixes for
1262227fc13Smrgarchitecture-specific files and architecture-independent files.  If you
1272227fc13Smrgpass the option `--exec-prefix=PREFIX' to `configure', the package uses
1282227fc13SmrgPREFIX as the prefix for installing programs and libraries.
1292227fc13SmrgDocumentation and other data files still use the regular prefix.
1302227fc13Smrg
1312227fc13Smrg   In addition, if you use an unusual directory layout you can give
1322227fc13Smrgoptions like `--bindir=DIR' to specify different values for particular
1332227fc13Smrgkinds of files.  Run `configure --help' for a list of the directories
1342227fc13Smrgyou can set and what kinds of files go in them.
1352227fc13Smrg
1362227fc13Smrg   If the package supports it, you can cause programs to be installed
1372227fc13Smrgwith an extra prefix or suffix on their names by giving `configure' the
1382227fc13Smrgoption `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
1392227fc13Smrg
1402227fc13SmrgOptional Features
1412227fc13Smrg=================
1422227fc13Smrg
1432227fc13Smrg   Some packages pay attention to `--enable-FEATURE' options to
1442227fc13Smrg`configure', where FEATURE indicates an optional part of the package.
1452227fc13SmrgThey may also pay attention to `--with-PACKAGE' options, where PACKAGE
1462227fc13Smrgis something like `gnu-as' or `x' (for the X Window System).  The
1472227fc13Smrg`README' should mention any `--enable-' and `--with-' options that the
1482227fc13Smrgpackage recognizes.
1492227fc13Smrg
1502227fc13Smrg   For packages that use the X Window System, `configure' can usually
1512227fc13Smrgfind the X include and library files automatically, but if it doesn't,
1522227fc13Smrgyou can use the `configure' options `--x-includes=DIR' and
1532227fc13Smrg`--x-libraries=DIR' to specify their locations.
1542227fc13Smrg
1552227fc13SmrgParticular systems
1562227fc13Smrg==================
1572227fc13Smrg
1582227fc13Smrg   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
1592227fc13SmrgCC is not installed, it is recommended to use the following options in
1602227fc13Smrgorder to use an ANSI C compiler:
1612227fc13Smrg
1622227fc13Smrg     ./configure CC="cc -Ae"
1632227fc13Smrg
1642227fc13Smrgand if that doesn't work, install pre-built binaries of GCC for HP-UX.
1652227fc13Smrg
1662227fc13Smrg   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
1672227fc13Smrgparse its `<wchar.h>' header file.  The option `-nodtk' can be used as
1682227fc13Smrga workaround.  If GNU CC is not installed, it is therefore recommended
1692227fc13Smrgto try
1702227fc13Smrg
1712227fc13Smrg     ./configure CC="cc"
1722227fc13Smrg
1732227fc13Smrgand if that doesn't work, try
1742227fc13Smrg
1752227fc13Smrg     ./configure CC="cc -nodtk"
1762227fc13Smrg
1772227fc13SmrgSpecifying the System Type
1782227fc13Smrg==========================
1792227fc13Smrg
1802227fc13Smrg   There may be some features `configure' cannot figure out
1812227fc13Smrgautomatically, but needs to determine by the type of machine the package
1822227fc13Smrgwill run on.  Usually, assuming the package is built to be run on the
1832227fc13Smrg_same_ architectures, `configure' can figure that out, but if it prints
1842227fc13Smrga message saying it cannot guess the machine type, give it the
1852227fc13Smrg`--build=TYPE' option.  TYPE can either be a short name for the system
1862227fc13Smrgtype, such as `sun4', or a canonical name which has the form:
1872227fc13Smrg
1882227fc13Smrg     CPU-COMPANY-SYSTEM
1892227fc13Smrg
1902227fc13Smrgwhere SYSTEM can have one of these forms:
1912227fc13Smrg
1922227fc13Smrg     OS KERNEL-OS
1932227fc13Smrg
1942227fc13Smrg   See the file `config.sub' for the possible values of each field.  If
1952227fc13Smrg`config.sub' isn't included in this package, then this package doesn't
1962227fc13Smrgneed to know the machine type.
1972227fc13Smrg
1982227fc13Smrg   If you are _building_ compiler tools for cross-compiling, you should
1992227fc13Smrguse the option `--target=TYPE' to select the type of system they will
2002227fc13Smrgproduce code for.
2012227fc13Smrg
2022227fc13Smrg   If you want to _use_ a cross compiler, that generates code for a
2032227fc13Smrgplatform different from the build platform, you should specify the
2042227fc13Smrg"host" platform (i.e., that on which the generated programs will
2052227fc13Smrgeventually be run) with `--host=TYPE'.
2062227fc13Smrg
2072227fc13SmrgSharing Defaults
2082227fc13Smrg================
2092227fc13Smrg
2102227fc13Smrg   If you want to set default values for `configure' scripts to share,
2112227fc13Smrgyou can create a site shell script called `config.site' that gives
2122227fc13Smrgdefault values for variables like `CC', `cache_file', and `prefix'.
2132227fc13Smrg`configure' looks for `PREFIX/share/config.site' if it exists, then
2142227fc13Smrg`PREFIX/etc/config.site' if it exists.  Or, you can set the
2152227fc13Smrg`CONFIG_SITE' environment variable to the location of the site script.
2162227fc13SmrgA warning: not all `configure' scripts look for a site script.
2172227fc13Smrg
2182227fc13SmrgDefining Variables
2192227fc13Smrg==================
2202227fc13Smrg
2212227fc13Smrg   Variables not defined in a site shell script can be set in the
2222227fc13Smrgenvironment passed to `configure'.  However, some packages may run
2232227fc13Smrgconfigure again during the build, and the customized values of these
2242227fc13Smrgvariables may be lost.  In order to avoid this problem, you should set
2252227fc13Smrgthem in the `configure' command line, using `VAR=value'.  For example:
2262227fc13Smrg
2272227fc13Smrg     ./configure CC=/usr/local2/bin/gcc
2282227fc13Smrg
2292227fc13Smrgcauses the specified `gcc' to be used as the C compiler (unless it is
2302227fc13Smrgoverridden in the site shell script).
2312227fc13Smrg
2322227fc13SmrgUnfortunately, this technique does not work for `CONFIG_SHELL' due to
2332227fc13Smrgan Autoconf bug.  Until the bug is fixed you can use this workaround:
2342227fc13Smrg
2352227fc13Smrg     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
2362227fc13Smrg
2372227fc13Smrg`configure' Invocation
2382227fc13Smrg======================
2392227fc13Smrg
2402227fc13Smrg   `configure' recognizes the following options to control how it
2412227fc13Smrgoperates.
2422227fc13Smrg
2432227fc13Smrg`--help'
2442227fc13Smrg`-h'
2452227fc13Smrg     Print a summary of all of the options to `configure', and exit.
2462227fc13Smrg
2472227fc13Smrg`--help=short'
2482227fc13Smrg`--help=recursive'
2492227fc13Smrg     Print a summary of the options unique to this package's
2502227fc13Smrg     `configure', and exit.  The `short' variant lists options used
2512227fc13Smrg     only in the top level, while the `recursive' variant lists options
2522227fc13Smrg     also present in any nested packages.
2532227fc13Smrg
2542227fc13Smrg`--version'
2552227fc13Smrg`-V'
2562227fc13Smrg     Print the version of Autoconf used to generate the `configure'
2572227fc13Smrg     script, and exit.
2582227fc13Smrg
2592227fc13Smrg`--cache-file=FILE'
2602227fc13Smrg     Enable the cache: use and save the results of the tests in FILE,
2612227fc13Smrg     traditionally `config.cache'.  FILE defaults to `/dev/null' to
2622227fc13Smrg     disable caching.
2632227fc13Smrg
2642227fc13Smrg`--config-cache'
2652227fc13Smrg`-C'
2662227fc13Smrg     Alias for `--cache-file=config.cache'.
2672227fc13Smrg
2682227fc13Smrg`--quiet'
2692227fc13Smrg`--silent'
2702227fc13Smrg`-q'
2712227fc13Smrg     Do not print messages saying which checks are being made.  To
2722227fc13Smrg     suppress all normal output, redirect it to `/dev/null' (any error
2732227fc13Smrg     messages will still be shown).
2742227fc13Smrg
2752227fc13Smrg`--srcdir=DIR'
2762227fc13Smrg     Look for the package's source code in directory DIR.  Usually
2772227fc13Smrg     `configure' can determine that directory automatically.
2782227fc13Smrg
2792227fc13Smrg`--prefix=DIR'
2802227fc13Smrg     Use DIR as the installation prefix.  *Note Installation Names::
2812227fc13Smrg     for more details, including other options available for fine-tuning
2822227fc13Smrg     the installation locations.
2832227fc13Smrg
2842227fc13Smrg`--no-create'
2852227fc13Smrg`-n'
2862227fc13Smrg     Run the configure checks, but stop before creating any output
2872227fc13Smrg     files.
2882227fc13Smrg
2892227fc13Smrg`configure' also accepts some other, not widely useful, options.  Run
2902227fc13Smrg`configure --help' for more details.
2912227fc13Smrg
292