PERLMODINSTALL(1)					 Perl Programmers Reference Guide					 PERLMODINSTALL(1)

NAME

       perlmodinstall - Installing CPAN Modules

DESCRIPTION

       You can think of a module as the fundamental unit of reusable Perl code; see perlmod for details.  Whenever anyone creates a chunk of Perl
       code that they think will be useful to the world, they register as a Perl developer at http://www.cpan.org/modules/04pause.html so that
       they can then upload their code to the CPAN.  The CPAN is the Comprehensive Perl Archive Network and can be accessed at
       http://www.cpan.org/ , and searched at http://search.cpan.org/ .

       This documentation is for people who want to download CPAN modules and install them on their own computer.

       PREAMBLE

       First, are you sure that the module isn't already on your system?  Try "perl -MFoo -e 1".  (Replace "Foo" with the name of the module; for
       instance, "perl -MCGI::Carp -e 1".

       If you don't see an error message, you have the module.	(If you do see an error message, it's still possible you have the module, but that
       it's not in your path, which you can display with "perl -e "print qq(@INC)"".)  For the remainder of this document, we'll assume that you
       really honestly truly lack an installed module, but have found it on the CPAN.

       So now you have a file ending in .tar.gz (or, less often, .zip).  You know there's a tasty module inside.  There are four steps you must
       now take:

       DECOMPRESS the file
       UNPACK the file into a directory
       BUILD the module (sometimes unnecessary)
       INSTALL the module.

       Here's how to perform each step for each operating system.  This is <not> a substitute for reading the README and INSTALL files that might
       have come with your module!

       Also note that these instructions are tailored for installing the module into your system's repository of Perl modules -- but you can
       install modules into any directory you wish.  For instance, where I say "perl Makefile.PL", you can substitute "perl Makefile.PL PRE-
       FIX=/my/perl_directory" to install the modules into "/my/perl_directory".  Then you can use the modules from your Perl programs with "use
       lib "/my/perl_directory/lib/site_perl";" or sometimes just "use "/my/perl_directory";".	If you're on a system that requires superuser/root
       access to install modules into the directories you see when you type "perl -e "print qq(@INC)"", you'll want to install them into a local
       directory (such as your home directory) and use this approach.

       o   If you're on a Unix or Unix-like system,

	   You can use Andreas Koenig's CPAN module ( http://www.cpan.org/modules/by-module/CPAN ) to automate the following steps, from DECOM-
	   PRESS through INSTALL.

	   A. DECOMPRESS

	   Decompress the file with "gzip -d yourmodule.tar.gz"

	   You can get gzip from ftp://prep.ai.mit.edu/pub/gnu/

	   Or, you can combine this step with the next to save disk space:

		gzip -dc yourmodule.tar.gz | tar -xof -

	   B. UNPACK

	   Unpack the result with "tar -xof yourmodule.tar"

	   C. BUILD

	   Go into the newly-created directory and type:

		 perl Makefile.PL
		 make test

	   or

		 perl Makefile.PL PREFIX=/my/perl_directory

	   to install it locally.  (Remember that if you do this, you'll have to put "use lib "/my/perl_directory";" near the top of the program
	   that is to use this module.

	   D. INSTALL

	   While still in that directory, type:

		 make install

	   Make sure you have the appropriate permissions to install the module in your Perl 5 library directory.  Often, you'll need to be root.

	   That's all you need to do on Unix systems with dynamic linking.  Most Unix systems have dynamic linking -- if yours doesn't, or if for
	   another reason you have a statically-linked perl, and the module requires compilation, you'll need to build a new Perl binary that
	   includes the module.  Again, you'll probably need to be root.

       o   If you're running ActivePerl (Win95/98/2K/NT/XP, Linux, Solaris)

	   First, type "ppm" from a shell and see whether ActiveState's PPM repository has your module.  If so, you can install it with "ppm" and
	   you won't have to bother with any of the other steps here.  You might be able to use the CPAN instructions from the "Unix or Linux"
	   section above as well; give it a try.  Otherwise, you'll have to follow the steps below.

	      A. DECOMPRESS

	   You can use the shareware Winzip ( http://www.winzip.com ) to decompress and unpack modules.

	      B. UNPACK

	   If you used WinZip, this was already done for you.

	      C. BUILD

	   You'll need the "nmake" utility, available at http://download.microsoft.com/download/vc15/Patch/1.52/W95/EN-US/nmake15.exe or dmake,
	   available on CPAN.  http://search.cpan.org/dist/dmake/

	   Does the module require compilation (i.e. does it have files that end in .xs, .c, .h, .y, .cc, .cxx, or .C)?  If it does, life is now
	   officially tough for you, because you have to compile the module yourself -- no easy feat on Windows.  You'll need a compiler such as
	   Visual C++.	Alternatively, you can download a pre-built PPM package from ActiveState.  http://aspn.activestate.com/ASPN/Down-
	   loads/ActivePerl/PPM/

	   Go into the newly-created directory and type:

		 perl Makefile.PL
		 nmake test

	      D. INSTALL

	   While still in that directory, type:

		 nmake install

       o   If you're using a Macintosh with "Classic" MacOS and MacPerl,

	   A. DECOMPRESS

	   First, make sure you have the latest cpan-mac distribution ( http://www.cpan.org/authors/id/CNANDOR/ ), which has utilities for doing
	   all of the steps.  Read the cpan-mac directions carefully and install it.  If you choose not to use cpan-mac for some reason, there are
	   alternatives listed here.

	   After installing cpan-mac, drop the module archive on the untarzipme droplet, which will decompress and unpack for you.

	   Or, you can either use the shareware StuffIt Expander program ( http://www.aladdinsys.com/expander/ ) in combination with DropStuff
	   with Expander Enhancer ( http://www.aladdinsys.com/dropstuff/ ) or the freeware MacGzip program ( http://persephone.cps.unizar.es/gen-
	   eral/gente/spd/gzip/gzip.html ).

	   B. UNPACK

	   If you're using untarzipme or StuffIt, the archive should be extracted now.	Or, you can use the freeware suntar or Tar ( http://hyper-
	   archive.lcs.mit.edu/HyperArchive/Archive/cmp/ ).

	   C. BUILD

	   Check the contents of the distribution.  Read the module's documentation, looking for reasons why you might have trouble using it with
	   MacPerl.  Look for .xs and .c files, which normally denote that the distribution must be compiled, and you cannot install it "out of
	   the box."  (See "PORTABILITY".)

	   If a module does not work on MacPerl but should, or needs to be compiled, see if the module exists already as a port on the MacPerl
	   Module Porters site ( http://pudge.net/mmp/ ).  For more information on doing XS with MacPerl yourself, see Arved Sandstrom's XS tuto-
	   rial ( http://macperl.com/depts/Tutorials/ ), and then consider uploading your binary to the CPAN and registering it on the MMP site.

	   D. INSTALL

	   If you are using cpan-mac, just drop the folder on the installme droplet, and use the module.

	   Or, if you aren't using cpan-mac, do some manual labor.

	   Make sure the newlines for the modules are in Mac format, not Unix format.  If they are not then you might have decompressed them
	   incorrectly.  Check your decompression and unpacking utilities settings to make sure they are translating text files properly.

	   As a last resort, you can use the perl one-liner:

	       perl -i.bak -pe 's/(?:15)?12/15/g' <filenames>

	   on the source files.

	   Then move the files (probably just the .pm files, though there may be some additional ones, too; check the module documentation) to
	   their final destination: This will most likely be in "$ENV{MACPERL}site_lib:" (i.e., "HD:MacPerl folder:site_lib:").  You can add new
	   paths to the default @INC in the Preferences menu item in the MacPerl application ("$ENV{MACPERL}site_lib:" is added automagically).
	   Create whatever directory structures are required (i.e., for "Some::Module", create "$ENV{MACPERL}site_lib:Some:" and put "Module.pm"
	   in that directory).

	   Then run the following script (or something like it):

		#!perl -w
		use AutoSplit;
		my $dir = "${MACPERL}site_perl";
		autosplit("$dir:Some:Module.pm", "$dir:auto", 0, 1, 1);

       o   If you're on the DJGPP port of DOS,

	      A. DECOMPRESS

	   djtarx ( ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2/ ) will both uncompress and unpack.

	      B. UNPACK

	   See above.

	      C. BUILD

	   Go into the newly-created directory and type:

		 perl Makefile.PL
		 make test

	   You will need the packages mentioned in README.dos in the Perl distribution.

	      D. INSTALL

	   While still in that directory, type:

		make install

	   You will need the packages mentioned in README.dos in the Perl distribution.

       o   If you're on OS/2,

	   Get the EMX development suite and gzip/tar, from either Hobbes ( http://hobbes.nmsu.edu ) or Leo ( http://www.leo.org ), and then fol-
	   low the instructions for Unix.

       o   If you're on VMS,

	   When downloading from CPAN, save your file with a ".tgz" extension instead of ".tar.gz".  All other periods in the filename should be
	   replaced with underscores.  For example, "Your-Module-1.33.tar.gz" should be downloaded as "Your-Module-1_33.tgz".

	   A. DECOMPRESS

	   Type

	       gzip -d Your-Module.tgz

	   or, for zipped modules, type

	       unzip Your-Module.zip

	   Executables for gzip, zip, and VMStar:

	       http://www.openvms.digital.com/freeware/
	       http://www.crinoid.com/utils/

	   and their source code:

	       http://www.fsf.org/order/ftp.html

	   Note that GNU's gzip/gunzip is not the same as Info-ZIP's zip/unzip package.  The former is a simple compression tool; the latter per-
	   mits creation of multi-file archives.

	   B. UNPACK

	   If you're using VMStar:

		VMStar xf Your-Module.tar

	   Or, if you're fond of VMS command syntax:

		tar/extract/verbose Your_Module.tar

	   C. BUILD

	   Make sure you have MMS (from Digital) or the freeware MMK ( available from MadGoat at http://www.madgoat.com ).  Then type this to cre-
	   ate the DESCRIP.MMS for the module:

	       perl Makefile.PL

	   Now you're ready to build:

	       mms test

	   Substitute "mmk" for "mms" above if you're using MMK.

	   D. INSTALL

	   Type

	       mms install

	   Substitute "mmk" for "mms" above if you're using MMK.

       o   If you're on MVS,

	   Introduce the .tar.gz file into an HFS as binary; don't translate from ASCII to EBCDIC.

	   A. DECOMPRESS

	   Decompress the file with "gzip -d yourmodule.tar.gz"

	   You can get gzip from http://www.s390.ibm.com/products/oe/bpxqp1.html

	   B. UNPACK

	   Unpack the result with

		pax -o to=IBM-1047,from=ISO8859-1 -r < yourmodule.tar

	   The BUILD and INSTALL steps are identical to those for Unix.  Some modules generate Makefiles that work better with GNU make, which is
	   available from http://www.mks.com/s390/gnu/

PORTABILITY

       Note that not all modules will work with on all platforms.  See perlport for more information on portability issues.  Read the documenta-
       tion to see if the module will work on your system.  There are basically three categories of modules that will not work "out of the box"
       with all platforms (with some possibility of overlap):

       o   Those that should, but don't.  These need to be fixed; consider contacting the author and possibly writing a patch.

       o   Those that need to be compiled, where the target platform doesn't have compilers readily available.	(These modules contain .xs or .c
	   files, usually.)  You might be able to find existing binaries on the CPAN or elsewhere, or you might want to try getting compilers and
	   building it yourself, and then release the binary for other poor souls to use.

       o   Those that are targeted at a specific platform.  (Such as the Win32:: modules.)  If the module is targeted specifically at a platform
	   other than yours, you're out of luck, most likely.

       Check the CPAN Testers if a module should work with your platform but it doesn't behave as you'd expect, or you aren't sure whether or not
       a module will work under your platform.	If the module you want isn't listed there, you can test it yourself and let CPAN Testers know, you
       can join CPAN Testers, or you can request it be tested.

	   http://testers.cpan.org/

HEY

       If you have any suggested changes for this page, let me know.  Please don't send me mail asking for help on how to install your modules.
       There are too many modules, and too few Orwants, for me to be able to answer or even acknowledge all your questions.  Contact the module
       author instead, or post to comp.lang.perl.modules, or ask someone familiar with Perl on your operating system.

AUTHOR

       Jon Orwant

       orwant@medita.mit.edu

       with invaluable help from Chris Nandor, and valuable help from Brandon Allbery, Charles Bailey, Graham Barr, Dominic Dunlop, Jarkko
       Hietaniemi, Ben Holzman, Tom Horsley, Nick Ing-Simmons, Tuomas J. Lukka, Laszlo Molnar, Alan Olsen, Peter Prymmer, Gurusamy Sarathy,
       Christoph Spalinger, Dan Sugalski, Larry Virden, and Ilya Zakharevich.

       First version July 22, 1998; last revised November 21, 2001.

COPYRIGHT

       Copyright (C) 1998, 2002, 2003 Jon Orwant.  All Rights Reserved.

       Permission is granted to make and distribute verbatim copies of this documentation provided the copyright notice and this permission notice
       are preserved on all copies.

       Permission is granted to copy and distribute modified versions of this documentation under the conditions for verbatim copying, provided
       also that they are marked clearly as modified versions, that the authors' names and title are unchanged (though subtitles and additional
       authors' names may be added), and that the entire resulting derived work is distributed under the terms of a permission notice identical to
       this one.

       Permission is granted to copy and distribute translations of this documentation into another language, under the above conditions for modi-
       fied versions.

perl v5.8.9							    2007-11-17							 PERLMODINSTALL(1)