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-Installation Instructions
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-*************************
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-
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-Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
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-2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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-
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- Copying and distribution of this file, with or without modification,
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-are permitted in any medium without royalty provided the copyright
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-notice and this notice are preserved. This file is offered as-is,
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-without warranty of any kind.
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-
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-Basic Installation
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-==================
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-
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- Briefly, the shell commands `./configure; make; make install' should
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-configure, build, and install this package. The following
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-more-detailed instructions are generic; see the `README' file for
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-instructions specific to this package. Some packages provide this
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-`INSTALL' file but do not implement all of the features documented
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-below. The lack of an optional feature in a given package is not
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-necessarily a bug. More recommendations for GNU packages can be found
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-in *note Makefile Conventions: (standards)Makefile Conventions.
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-
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- The `configure' shell script attempts to guess correct values for
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-various system-dependent variables used during compilation. It uses
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-those values to create a `Makefile' in each directory of the package.
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-It may also create one or more `.h' files containing system-dependent
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-definitions. Finally, it creates a shell script `config.status' that
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-you can run in the future to recreate the current configuration, and a
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-file `config.log' containing compiler output (useful mainly for
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-debugging `configure').
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-
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- It can also use an optional file (typically called `config.cache'
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-and enabled with `--cache-file=config.cache' or simply `-C') that saves
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-the results of its tests to speed up reconfiguring. Caching is
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-disabled by default to prevent problems with accidental use of stale
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-cache files.
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-
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- If you need to do unusual things to compile the package, please try
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-to figure out how `configure' could check whether to do them, and mail
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-diffs or instructions to the address given in the `README' so they can
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-be considered for the next release. If you are using the cache, and at
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-some point `config.cache' contains results you don't want to keep, you
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-may remove or edit it.
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-
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- The file `configure.ac' (or `configure.in') is used to create
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-`configure' by a program called `autoconf'. You need `configure.ac' if
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-you want to change it or regenerate `configure' using a newer version
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-of `autoconf'.
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-
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- The simplest way to compile this package is:
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-
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- 1. `cd' to the directory containing the package's source code and type
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- `./configure' to configure the package for your system.
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-
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- Running `configure' might take a while. While running, it prints
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- some messages telling which features it is checking for.
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-
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- 2. Type `make' to compile the package.
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-
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- 3. Optionally, type `make check' to run any self-tests that come with
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- the package, generally using the just-built uninstalled binaries.
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-
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- 4. Type `make install' to install the programs and any data files and
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- documentation. When installing into a prefix owned by root, it is
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- recommended that the package be configured and built as a regular
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- user, and only the `make install' phase executed with root
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- privileges.
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-
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- 5. Optionally, type `make installcheck' to repeat any self-tests, but
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- this time using the binaries in their final installed location.
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- This target does not install anything. Running this target as a
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- regular user, particularly if the prior `make install' required
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- root privileges, verifies that the installation completed
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- correctly.
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-
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- 6. You can remove the program binaries and object files from the
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- source code directory by typing `make clean'. To also remove the
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- files that `configure' created (so you can compile the package for
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- a different kind of computer), type `make distclean'. There is
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- also a `make maintainer-clean' target, but that is intended mainly
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- for the package's developers. If you use it, you may have to get
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- all sorts of other programs in order to regenerate files that came
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- with the distribution.
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-
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- 7. Often, you can also type `make uninstall' to remove the installed
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- files again. In practice, not all packages have tested that
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- uninstallation works correctly, even though it is required by the
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- GNU Coding Standards.
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-
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- 8. Some packages, particularly those that use Automake, provide `make
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- distcheck', which can by used by developers to test that all other
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- targets like `make install' and `make uninstall' work correctly.
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- This target is generally not run by end users.
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-
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-Compilers and Options
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-=====================
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-
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- Some systems require unusual options for compilation or linking that
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-the `configure' script does not know about. Run `./configure --help'
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-for details on some of the pertinent environment variables.
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-
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- You can give `configure' initial values for configuration parameters
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-by setting variables in the command line or in the environment. Here
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-is an example:
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-
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- ./configure CC=c99 CFLAGS=-g LIBS=-lposix
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-
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- *Note Defining Variables::, for more details.
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-
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-Compiling For Multiple Architectures
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-====================================
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-
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- You can compile the package for more than one kind of computer at the
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-same time, by placing the object files for each architecture in their
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-own directory. To do this, you can use GNU `make'. `cd' to the
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-directory where you want the object files and executables to go and run
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-the `configure' script. `configure' automatically checks for the
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-source code in the directory that `configure' is in and in `..'. This
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-is known as a "VPATH" build.
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-
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- With a non-GNU `make', it is safer to compile the package for one
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-architecture at a time in the source code directory. After you have
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-installed the package for one architecture, use `make distclean' before
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-reconfiguring for another architecture.
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-
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- On MacOS X 10.5 and later systems, you can create libraries and
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-executables that work on multiple system types--known as "fat" or
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-"universal" binaries--by specifying multiple `-arch' options to the
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-compiler but only a single `-arch' option to the preprocessor. Like
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-this:
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-
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- ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
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- CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
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- CPP="gcc -E" CXXCPP="g++ -E"
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-
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- This is not guaranteed to produce working output in all cases, you
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-may have to build one architecture at a time and combine the results
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-using the `lipo' tool if you have problems.
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-
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-Installation Names
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-==================
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-
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- By default, `make install' installs the package's commands under
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-`/usr/local/bin', include files under `/usr/local/include', etc. You
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-can specify an installation prefix other than `/usr/local' by giving
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-`configure' the option `--prefix=PREFIX', where PREFIX must be an
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-absolute file name.
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-
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- You can specify separate installation prefixes for
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-architecture-specific files and architecture-independent files. If you
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-pass the option `--exec-prefix=PREFIX' to `configure', the package uses
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-PREFIX as the prefix for installing programs and libraries.
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-Documentation and other data files still use the regular prefix.
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-
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- In addition, if you use an unusual directory layout you can give
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-options like `--bindir=DIR' to specify different values for particular
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-kinds of files. Run `configure --help' for a list of the directories
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-you can set and what kinds of files go in them. In general, the
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-default for these options is expressed in terms of `${prefix}', so that
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-specifying just `--prefix' will affect all of the other directory
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-specifications that were not explicitly provided.
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-
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- The most portable way to affect installation locations is to pass the
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-correct locations to `configure'; however, many packages provide one or
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-both of the following shortcuts of passing variable assignments to the
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-`make install' command line to change installation locations without
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-having to reconfigure or recompile.
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-
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- The first method involves providing an override variable for each
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-affected directory. For example, `make install
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-prefix=/alternate/directory' will choose an alternate location for all
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-directory configuration variables that were expressed in terms of
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-`${prefix}'. Any directories that were specified during `configure',
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-but not in terms of `${prefix}', must each be overridden at install
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-time for the entire installation to be relocated. The approach of
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-makefile variable overrides for each directory variable is required by
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-the GNU Coding Standards, and ideally causes no recompilation.
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-However, some platforms have known limitations with the semantics of
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-shared libraries that end up requiring recompilation when using this
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-method, particularly noticeable in packages that use GNU Libtool.
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-
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- The second method involves providing the `DESTDIR' variable. For
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-example, `make install DESTDIR=/alternate/directory' will prepend
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-`/alternate/directory' before all installation names. The approach of
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-`DESTDIR' overrides is not required by the GNU Coding Standards, and
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-does not work on platforms that have drive letters. On the other hand,
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-it does better at avoiding recompilation issues, and works well even
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-when some directory options were not specified in terms of `${prefix}'
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-at `configure' time.
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-
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-Optional Features
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-=================
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-
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- If the package supports it, you can cause programs to be installed
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-with an extra prefix or suffix on their names by giving `configure' the
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-option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
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-
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- Some packages pay attention to `--enable-FEATURE' options to
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-`configure', where FEATURE indicates an optional part of the package.
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-They may also pay attention to `--with-PACKAGE' options, where PACKAGE
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-is something like `gnu-as' or `x' (for the X Window System). The
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-`README' should mention any `--enable-' and `--with-' options that the
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-package recognizes.
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-
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- For packages that use the X Window System, `configure' can usually
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-find the X include and library files automatically, but if it doesn't,
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-you can use the `configure' options `--x-includes=DIR' and
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-`--x-libraries=DIR' to specify their locations.
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-
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- Some packages offer the ability to configure how verbose the
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-execution of `make' will be. For these packages, running `./configure
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---enable-silent-rules' sets the default to minimal output, which can be
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-overridden with `make V=1'; while running `./configure
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---disable-silent-rules' sets the default to verbose, which can be
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-overridden with `make V=0'.
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-
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-Particular systems
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-==================
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-
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- On HP-UX, the default C compiler is not ANSI C compatible. If GNU
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-CC is not installed, it is recommended to use the following options in
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-order to use an ANSI C compiler:
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-
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- ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
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-
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-and if that doesn't work, install pre-built binaries of GCC for HP-UX.
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-
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- On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
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-parse its `<wchar.h>' header file. The option `-nodtk' can be used as
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-a workaround. If GNU CC is not installed, it is therefore recommended
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-to try
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-
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- ./configure CC="cc"
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-
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-and if that doesn't work, try
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-
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- ./configure CC="cc -nodtk"
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-
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- On Solaris, don't put `/usr/ucb' early in your `PATH'. This
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-directory contains several dysfunctional programs; working variants of
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-these programs are available in `/usr/bin'. So, if you need `/usr/ucb'
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-in your `PATH', put it _after_ `/usr/bin'.
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-
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- On Haiku, software installed for all users goes in `/boot/common',
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-not `/usr/local'. It is recommended to use the following options:
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-
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- ./configure --prefix=/boot/common
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-
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-Specifying the System Type
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-==========================
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-
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- There may be some features `configure' cannot figure out
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-automatically, but needs to determine by the type of machine the package
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-will run on. Usually, assuming the package is built to be run on the
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-_same_ architectures, `configure' can figure that out, but if it prints
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-a message saying it cannot guess the machine type, give it the
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-`--build=TYPE' option. TYPE can either be a short name for the system
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-type, such as `sun4', or a canonical name which has the form:
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-
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- CPU-COMPANY-SYSTEM
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-
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-where SYSTEM can have one of these forms:
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-
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- OS
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- KERNEL-OS
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-
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- See the file `config.sub' for the possible values of each field. If
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-`config.sub' isn't included in this package, then this package doesn't
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-need to know the machine type.
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-
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- If you are _building_ compiler tools for cross-compiling, you should
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-use the option `--target=TYPE' to select the type of system they will
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-produce code for.
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-
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- If you want to _use_ a cross compiler, that generates code for a
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-platform different from the build platform, you should specify the
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-"host" platform (i.e., that on which the generated programs will
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-eventually be run) with `--host=TYPE'.
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-
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-Sharing Defaults
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-================
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-
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- If you want to set default values for `configure' scripts to share,
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-you can create a site shell script called `config.site' that gives
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-default values for variables like `CC', `cache_file', and `prefix'.
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-`configure' looks for `PREFIX/share/config.site' if it exists, then
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-`PREFIX/etc/config.site' if it exists. Or, you can set the
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-`CONFIG_SITE' environment variable to the location of the site script.
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-A warning: not all `configure' scripts look for a site script.
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-
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-Defining Variables
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-==================
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-
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- Variables not defined in a site shell script can be set in the
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-environment passed to `configure'. However, some packages may run
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-configure again during the build, and the customized values of these
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-variables may be lost. In order to avoid this problem, you should set
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-them in the `configure' command line, using `VAR=value'. For example:
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-
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- ./configure CC=/usr/local2/bin/gcc
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-
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-causes the specified `gcc' to be used as the C compiler (unless it is
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-overridden in the site shell script).
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-
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-Unfortunately, this technique does not work for `CONFIG_SHELL' due to
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-an Autoconf bug. Until the bug is fixed you can use this workaround:
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-
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- CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
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-
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-`configure' Invocation
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-======================
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-
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- `configure' recognizes the following options to control how it
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-operates.
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-
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-`--help'
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-`-h'
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- Print a summary of all of the options to `configure', and exit.
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-
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-`--help=short'
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-`--help=recursive'
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- Print a summary of the options unique to this package's
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- `configure', and exit. The `short' variant lists options used
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- only in the top level, while the `recursive' variant lists options
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- also present in any nested packages.
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-
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-`--version'
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-`-V'
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- Print the version of Autoconf used to generate the `configure'
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- script, and exit.
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-
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-`--cache-file=FILE'
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- Enable the cache: use and save the results of the tests in FILE,
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- traditionally `config.cache'. FILE defaults to `/dev/null' to
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- disable caching.
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-
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-`--config-cache'
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-`-C'
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- Alias for `--cache-file=config.cache'.
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-
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-`--quiet'
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-`--silent'
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-`-q'
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- Do not print messages saying which checks are being made. To
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- suppress all normal output, redirect it to `/dev/null' (any error
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- messages will still be shown).
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-
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-`--srcdir=DIR'
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- Look for the package's source code in directory DIR. Usually
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- `configure' can determine that directory automatically.
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-
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-`--prefix=DIR'
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- Use DIR as the installation prefix. *note Installation Names::
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- for more details, including other options available for fine-tuning
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- the installation locations.
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-
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-`--no-create'
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-`-n'
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- Run the configure checks, but stop before creating any output
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- files.
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-
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-`configure' also accepts some other, not widely useful, options. Run
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-`configure --help' for more details.
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-
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FlorianPalm