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Installation Instructions |
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************************* |
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Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation, |
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Inc. |
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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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Basic Installation |
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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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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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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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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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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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The simplest way to compile this package is: |
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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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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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2. Type `make' to compile the package. |
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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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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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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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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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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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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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Compilers and Options |
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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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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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./configure CC=c99 CFLAGS=-g LIBS=-lposix |
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*Note Defining Variables::, for more details. |
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Compiling For Multiple Architectures |
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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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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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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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./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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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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Installation Names |
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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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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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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 `${prefix}', so that |
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specifying just `--prefix' will affect all of the other directory |
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specifications that were not explicitly provided. |
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The most portable way to affect installation locations is to pass the |
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correct locations to `configure'; however, many packages provide one or |
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both of the following shortcuts of passing variable assignments to the |
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`make install' command line to change installation locations without |
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having to reconfigure or recompile. |
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The first method involves providing an override variable for each |
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affected directory. For example, `make install |
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prefix=/alternate/directory' will choose an alternate location for all |
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directory configuration variables that were expressed in terms of |
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`${prefix}'. Any directories that were specified during `configure', |
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but not in terms of `${prefix}', must each be overridden at install |
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time for the entire installation to be relocated. The approach of |
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makefile variable overrides for each directory variable is required by |
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the GNU Coding Standards, and ideally causes no recompilation. |
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However, some platforms have known limitations with the semantics of |
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shared libraries that end up requiring recompilation when using this |
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method, particularly noticeable in packages that use GNU Libtool. |
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The second method involves providing the `DESTDIR' variable. For |
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example, `make install DESTDIR=/alternate/directory' will prepend |
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`/alternate/directory' before all installation names. The approach of |
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`DESTDIR' overrides is not required by the GNU Coding Standards, and |
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does not work on platforms that have drive letters. On the other hand, |
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it does better at avoiding recompilation issues, and works well even |
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when some directory options were not specified in terms of `${prefix}' |
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at `configure' time. |
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Optional Features |
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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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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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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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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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Particular systems |
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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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./configure CC="cc -Ae -D_XOPEN_SOURCE=500" |
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and if that doesn't work, install pre-built binaries of GCC for HP-UX. |
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HP-UX `make' updates targets which have the same time stamps as |
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their prerequisites, which makes it generally unusable when shipped |
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generated files such as `configure' are involved. Use GNU `make' |
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instead. |
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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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./configure CC="cc" |
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and if that doesn't work, try |
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./configure CC="cc -nodtk" |
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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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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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./configure --prefix=/boot/common |
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Specifying the System Type |
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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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CPU-COMPANY-SYSTEM |
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where SYSTEM can have one of these forms: |
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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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Sharing Defaults |
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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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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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./configure CC=/usr/local2/bin/gcc |
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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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CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash |
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`configure' Invocation |
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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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`--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. |
| 337 |
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|
| 338 |
|
|
`--cache-file=FILE' |
| 339 |
|
|
Enable the cache: use and save the results of the tests in FILE, |
| 340 |
|
|
traditionally `config.cache'. FILE defaults to `/dev/null' to |
| 341 |
|
|
disable caching. |
| 342 |
|
|
|
| 343 |
|
|
`--config-cache' |
| 344 |
|
|
`-C' |
| 345 |
|
|
Alias for `--cache-file=config.cache'. |
| 346 |
|
|
|
| 347 |
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`--quiet' |
| 348 |
|
|
`--silent' |
| 349 |
|
|
`-q' |
| 350 |
|
|
Do not print messages saying which checks are being made. To |
| 351 |
|
|
suppress all normal output, redirect it to `/dev/null' (any error |
| 352 |
|
|
messages will still be shown). |
| 353 |
|
|
|
| 354 |
|
|
`--srcdir=DIR' |
| 355 |
|
|
Look for the package's source code in directory DIR. Usually |
| 356 |
|
|
`configure' can determine that directory automatically. |
| 357 |
|
|
|
| 358 |
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`--prefix=DIR' |
| 359 |
|
|
Use DIR as the installation prefix. *note Installation Names:: |
| 360 |
|
|
for more details, including other options available for fine-tuning |
| 361 |
|
|
the installation locations. |
| 362 |
|
|
|
| 363 |
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`--no-create' |
| 364 |
|
|
`-n' |
| 365 |
|
|
Run the configure checks, but stop before creating any output |
| 366 |
|
|
files. |
| 367 |
|
|
|
| 368 |
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`configure' also accepts some other, not widely useful, options. Run |
| 369 |
|
|
`configure --help' for more details. |
| 370 |
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