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Module::Build::Compat(User Contributed Perl DocumentatModule::Build::Compat(3)

       Module::Build::Compat - Compatibility with ExtUtils::MakeMaker

	 # In a	Build.PL :
	 use Module::Build;
	 my $build = Module::Build->new
	   ( module_name => 'Foo::Bar',
	     license	 => 'perl',
	     create_makefile_pl	=> 'traditional' );

       Because "ExtUtils::MakeMaker" has been the standard way to distribute
       modules for a long time,	many tools (, or	your system
       administrator) may expect to find a working Makefile.PL in every
       distribution they download from CPAN.  If you want to throw them	a
       bone, you can use "Module::Build::Compat" to automatically generate a
       Makefile.PL for you, in one of several different	styles.

       "Module::Build::Compat" also provides some code that helps out the
       Makefile.PL at runtime.

       Note that "Module::Build::Compat" more often causes installation	issues
       than solves them, and each of the three Makefile.PL generation styles
       has unique compatibility	or functionality issues	that are unlikely to
       be fixed. Thus, the use of this module and "create_makefile_pl" is

       create_makefile_pl($style, $build)
	   Creates a Makefile.PL in the	current	directory in one of several
	   styles, based on the	supplied "Module::Build" object	$build.	 This
	   is typically	controlled by passing the desired style	as the
	   "create_makefile_pl"	parameter to "Module::Build"'s "new()" method;
	   the Makefile.PL will	then be	automatically created during the
	   "distdir" action.

	   The currently supported styles are:

	       A Makefile.PL will be created in	the "traditional" style, i.e.
	       it will use "ExtUtils::MakeMaker" and won't rely	on
	       "Module::Build" at all.	In order to create the Makefile.PL,
	       we'll include the "requires" and	"build_requires" dependencies
	       as the "PREREQ_PM" parameter.

	       You don't want to use this style	if during the "perl Build.PL"
	       stage you ask the user questions, or do some auto-sensing about
	       the user's environment, or if you subclass "Module::Build" to
	       do some customization, because the vanilla Makefile.PL won't do
	       any of that.  Many standard "Module::Build" features such as
	       "test_requires" are also	not supported.

	       A small Makefile.PL will	be created that	passes all
	       functionality through to	the Build.PL script in the same
	       directory.  The user must already have "Module::Build"
	       installed in order to use this, or else they'll get a module-
	       not-found error.

	       This style attempts (with varying success) to translate the
	       Makefile.PL protocol to Build.PL, and is	unnecessary on any
	       modern toolchain	that recognizes	"configure_requires" metadata
	       described below,	as Build.PL will be run	by default in this
	       case. See
	       <> for an
	       example of the issues it	may cause.

	   passthrough (DEPRECATED)
	       This is just like the "small" option above, but if
	       "Module::Build" is not already installed	on the user's system,
	       the script will offer to	use "" to download it and
	       install it before continuing with the build.

	       This option has been deprecated and may be removed in a future
	       version of Module::Build.  Modern and CPANPLUS will
	       recognize the "configure_requires" metadata property and
	       install Module::Build before running Build.PL if	Module::Build
	       is listed and Module::Build now adds itself to
	       configure_requires by default.

	       Perl 5.10.1 includes "configure_requires" support.  In the
	       future, when "configure_requires" support is deemed
	       sufficiently widespread,	the "passthrough" style	will be

       run_build_pl(args => \@ARGV)
	   This	method runs the	Build.PL script, passing it any	arguments the
	   user	may have supplied to the "perl Makefile.PL" command.  Because
	   "ExtUtils::MakeMaker" and "Module::Build" accept different
	   arguments, this method also performs	some translation between the

	   "run_build_pl()" accepts the	following named	parameters:

	       The "args" parameter specifies the parameters that would
	       usually appear on the command line of the "perl Makefile.PL"
	       command - typically you'll just pass a reference	to @ARGV.

	       This is the filename of the script to run - it defaults to

	   This	method writes a	'dummy'	Makefile that will pass	all commands
	   through to the corresponding	"Module::Build"	actions.

	   "write_makefile()" accepts the following named parameters:

	       The name	of the file to write - defaults	to the string

       So, some	common scenarios are:

       1.  Just	include	a Build.PL script (without a Makefile.PL script), and
	   give	installation directions	in a README or INSTALL document
	   explaining how to install the module.  In particular, explain that
	   the user must install "Module::Build" before	installing your

	   Note	that if	you do this, you may make things easier	for yourself,
	   but harder for people with older versions of	CPAN or	CPANPLUS on
	   their system, because those tools generally only understand the
	   Makefile.PL/"ExtUtils::MakeMaker" way of doing things.

       2.  Include a Build.PL script and a "traditional" Makefile.PL, created
	   either manually or with "create_makefile_pl()".  Users won't	ever
	   have	to install "Module::Build" if they use the Makefile.PL,	but
	   they	won't get to take advantage of "Module::Build"'s extra
	   features either.

	   For good measure, of	course,	test both the Makefile.PL and the
	   Build.PL before shipping.

       3.  Include a Build.PL script and a "pass-through" Makefile.PL built
	   using "Module::Build::Compat".  This	will mean that people can
	   continue to use the "old" installation commands, and	they may never
	   notice that it's actually doing something else behind the scenes.
	   It will also	mean that your installation process is compatible with
	   older versions of tools like	CPAN and CPANPLUS.

       Ken Williams <>

       Copyright (c) 2001-2006 Ken Williams.  All rights reserved.

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

       Module::Build(3), ExtUtils::MakeMaker(3)

perl v5.32.1			  2021-11-04	      Module::Build::Compat(3)


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