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Module::Install::PAR(3)        User Contributed Perl Documentation	  Module::Install::PAR(3)

       Module::Install::PAR - Module::Install Support for PAR::Dist packages

       To offer your users the possibility to install binaries if we cannot compile an XS version
       of the module, you could use this simplistic stub:

	   use inc::Module::Install;

	   name 	   'Foo';
	   all_from	   'lib/Foo.pm';

	   # Which CPAN directory do we fetch binaries from?
	   par_base	   'SMUELLER';

	   unless ( can_xs ) {
	       my $okay = extract_par( fetch_par );
	       if (not $okay) {
		   die "No compiler and no binary package found. Aborting.\n";


       This module adds a couple of directives to Module::Install related to installing and
       creating PAR::Dist distributions.

       This directive sets the CPAN ID from whose CPAN directory to fetch binaries from. For
       example, you can choose to download binaries from
       http://www.cpan.org/authors/id/S/SM/SMUELLER/ or its ftp counterpart by writing:

	 par_base 'SMUELLER';

       By default, the name of the file to fetch is generated from the distribution name, its
       version, your platform name and your perl version concatenated with dashes.

       The directive, however, takes an optional second argument which specifies the name of the
       file to fetch.  (Though "par_base" does not fetch files itself, see below.)

	 par_base 'SMUELLER', 'foo';

       Once "fetch_par" is called, the file 'foo' will be downloaded from SMUELLER's CPAN
       directory. (It doesn't exist.)

       The second argument could be used to fetch platform-agnostic binaries:

	 par_base 'SMUELLER', "Some-Distribution-0.01.par";

       (Documentation TODO: Use the previously defined distribution name and version in example.)

       Fetches the .par file previously referenced in the documentation of the "par_base"

       "fetch_par" can be used without arguments given the "par_base" directive was used before.
       It will return the name of the file it fetched.

       If the first argument is an URL or a CPAN user ID, the file is fetched from that directory
       unless an URL has been previously set.  (Read that again.)

       If the second argument is a file name it is used as the name of the file to download.

       If the file could not be fetched, a suitable error message about no package being
       available, yada yada yada, is printed.  You can turn this off by specifying a true third

	 # Try to fetch the package (see par_base) but
	 # don't be verbose about failures
	 my $file = fetch_par('', '', undef);

       Takes the name of a PAR::Dist archive file as first argument. The 'blib/' directory of
       this archive is extracted and the 'pm_to_blib' is created.

       Typical shorthand usage:

	 extract_par( fetch_par ) or die "Could not install PAR::Dist archive.";

       This directive requires PAR::Dist (version 0.03 or up) on your system.  (And checks that
       it is available before continuing.)

       Creates a PAR::Dist archive from the 'blib/' subdirectory.

       First argument must be the name of the PAR::Dist archive to create.

       If your Makefile.PL has a "par_base" directive, the "make par" make target will be
       available. It uses this "make_par" directive internally, so on your development system,
       you can do this to create a .par binary archive for your platform:

	 perl Makefile.PL
	 make par

       Audrey Tang <cpan@audreyt.org>

       With documentation from Steffen Mueller <smueller@cpan.org>

       Copyright (c) 2006. Audrey Tang.

       This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

       See <http://www.perl.com/perl/misc/Artistic.html>

perl v5.16.3				    2012-03-01			  Module::Install::PAR(3)
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