ExtUtils::MakeMaker::Tutorial - Online Linux Manual PageSection : 3
Updated : 2022-01-21
Source : perl v5.34.0
Note : User Contributed Perl Documentation
NAMEExtUtils::MakeMaker::Tutorial − Writing a module with MakeMaker
SYNOPSIS​ use ExtUtils::MakeMaker; ​ ​ WriteMakefile( ​ NAME => 'Your::Module', ​ VERSION_FROM => 'lib/Your/Module.pm' ​ );
DESCRIPTIONThis is a short tutorial on writing a simple module with MakeMaker. It's really not that hard.
The MantraMakeMaker modules are installed using this simple mantra ​ perl Makefile.PL ​ make ​ make test ​ make install There are lots more commands and options, but the above will do it.
The LayoutThe basic files in a module look something like this. ​ Makefile.PL ​ MANIFEST ​ lib/Your/Module.pm That's all that's strictly necessary. There's additional files you might want: ​ lib/Your/Other/Module.pm ​ t/some_test.t ​ t/some_other_test.t ​ Changes ​ README ​ INSTALL ​ MANIFEST.SKIP ​ bin/some_program Makefile.PL When you run Makefile.PL, it makes a Makefile. That's the whole point of MakeMaker. The Makefile.PL is a simple program which loads ExtUtils::MakeMaker and runs the WriteMakefile() function to generate a Makefile. Here's an example of what you need for a simple module: ​ use ExtUtils::MakeMaker; ​ ​ WriteMakefile( ​ NAME => 'Your::Module', ​ VERSION_FROM => 'lib/Your/Module.pm' ​ ); ​NAME is the top-level namespace of your module. VERSION_FROM is the file which contains the $VERSION variable for the entire distribution. Typically this is the same as your top-level module. MANIFEST A simple listing of all the files in your distribution. ​ Makefile.PL ​ MANIFEST ​ lib/Your/Module.pm File paths in a MANIFEST always use Unix conventions (ie. /) even if you're not on Unix. You can write this by hand or generate it with 'make manifest'. See ExtUtils::Manifest for more details. lib/ This is the directory where the .pm and .pod files you wish to have installed go. They are laid out according to namespace. So Foo::Bar is lib/Foo/Bar.pm. t/ Tests for your modules go here. Each test filename ends with a .t. So t/foo.t 'make test' will run these tests. Typically, the t/ test directory is flat, with all test files located directly within it. However, you can nest tests within subdirectories, for example: ​ t/foo/subdir_test.t To do this, you need to inform WriteMakeFile() in your Makefile.PL file in the following fashion: ​ test => {TESTS => 't/*.t t/*/*.t'} That will run all tests in t/, as well as all tests in all subdirectories that reside under t/. You can nest as deeply as makes sense for your project. Simply add another entry in the test location string. For example, to test: ​ t/foo/bar/subdir_test.t You would use the following test directive: ​ test => {TESTS => 't/*.t t/*/*/*.t'} Note that in the above example, tests in the first subdirectory will not be run. To run all tests in the intermediary subdirectory preceding the one the test files are in, you need to explicitly note it: ​ test => {TESTS => 't/*.t t/*/*.t t/*/*/*.t'} You don't need to specify wildcards if you only want to test within specific subdirectories. The following example will only run tests in t/foo: ​ test => {TESTS => 't/foo/*.t'} Tests are run from the top level of your distribution. So inside a test you would refer to ./lib to enter the lib directory, for example. Changes A log of changes you've made to this module. The layout is free-form. Here's an example: ​ 1.01 Fri Apr 11 00:21:25 PDT 2003 ​ − thing() does some stuff now ​ − fixed the wiggy bug in withit() ​ ​ 1.00 Mon Apr 7 00:57:15 PDT 2003 ​ − "Rain of Frogs" now supported README A short description of your module, what it does, why someone would use it and its limitations. CPAN automatically pulls your README file out of the archive and makes it available to CPAN users, it is the first thing they will read to decide if your module is right for them. INSTALL Instructions on how to install your module along with any dependencies. Suggested information to include here: ​ any extra modules required for use ​ the minimum version of Perl required ​ if only works on certain operating systems MANIFEST.SKIP A file full of regular expressions to exclude when using 'make manifest' to generate the MANIFEST. These regular expressions are checked against each file path found in the distribution (so you're matching against ‟t/foo.t” not ‟foo.t”). Here's a sample: ​ ~$ # ignore emacs and vim backup files ​ .bak$ # ignore manual backups ​ \# # ignore CVS old revision files and emacs temp files Since # can be used for comments, # must be escaped. MakeMaker comes with a default MANIFEST.SKIP to avoid things like version control directories and backup files. Specifying your own will override this default. bin/ 
SEE ALSOperlmodstyle gives stylistic help writing a module. perlnewmod gives more information about how to write a module. There are modules to help you through the process of writing a module: ExtUtils::ModuleMaker, Module::Starter, Minilla::Tutorial, Dist::Milla::Tutorial, Dist::Zilla::Starter 0
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