ExtUtils::InstallPaths - Build.PL install path logic made easy
version 0.013
use ExtUtils::InstallPaths; use ExtUtils::Install 'install'; GetOptions(\my %opt, 'install_base=s', 'install_path=s%', 'installdirs=s', 'destdir=s', 'prefix=s', 'uninst:1', 'verbose:1'); my $paths = ExtUtils::InstallPaths->new(%opt, dist_name => $dist_name); install($paths->install_map, $opt{verbose}, 0, $opt{uninst});
This module tries to make install path resolution as easy as possible.
When you want to install a module, it needs to figure out where to install things. The nutshell version of how this works is that default installation locations are determined from ExtUtils::Config, and they may be individually overridden by using the install_path attribute. An install_base attribute lets you specify an alternative installation root like /home/foo and prefix does something similar in a rather different (and more complicated) way. destdir lets you specify a temporary installation directory like /tmp/install in case you want to create bundled-up installable packages.
install_path
install_base
prefix
destdir
The following types are supported by default.
lib
Usually pure-Perl module files ending in .pm or .pod.
arch
"Architecture-dependent" module files, usually produced by compiling XS, Inline, or similar code.
script
Programs written in pure Perl. In order to improve reuse, you may want to make these as small as possible - put the code into modules whenever possible.
bin
"Architecture-dependent" executable programs, i.e. compiled C code or something. Pretty rare to see this in a perl distribution, but it happens.
bindoc
Documentation for the stuff in script and bin. Usually generated from the POD in those files. Under Unix, these are manual pages belonging to the 'man1' category. Unless explicitly set, this is only available on platforms supporting manpages.
libdoc
Documentation for the stuff in lib and arch. This is usually generated from the POD in .pm and .pod files. Under Unix, these are manual pages belonging to the 'man3' category. Unless explicitly set, this is only available on platforms supporting manpages.
binhtml
This is the same as bindoc above, but applies to HTML documents. Unless explicitly set, this is only available when perl was configured to do so.
libhtml
This is the same as libdoc above, but applies to HTML documents. Unless explicitly set, this is only available when perl was configured to do so.
The default destinations for these installable things come from entries in your system's configuration. You can select from three different sets of default locations by setting the installdirs parameter as follows:
installdirs
'installdirs' set to: core site vendor uses the following defaults from ExtUtils::Config: lib => installprivlib installsitelib installvendorlib arch => installarchlib installsitearch installvendorarch script => installscript installsitescript installvendorscript bin => installbin installsitebin installvendorbin bindoc => installman1dir installsiteman1dir installvendorman1dir libdoc => installman3dir installsiteman3dir installvendorman3dir binhtml => installhtml1dir installsitehtml1dir installvendorhtml1dir [*] libhtml => installhtml3dir installsitehtml3dir installvendorhtml3dir [*] * Under some OS (eg. MSWin32) the destination for HTML documents is determined by the C<Config.pm> entry C<installhtmldir>.
The default value of installdirs is "site".
You can also set the whole bunch of installation paths by supplying the install_base parameter to point to a directory on your system. For instance, if you set install_base to "/home/ken" on a Linux system, you'll install as follows:
lib => /home/ken/lib/perl5 arch => /home/ken/lib/perl5/i386-linux script => /home/ken/bin bin => /home/ken/bin bindoc => /home/ken/man/man1 libdoc => /home/ken/man/man3 binhtml => /home/ken/html libhtml => /home/ken/html
This sets a prefix, identical to ExtUtils::MakeMaker's PREFIX option. This does something similar to install_base in a much more complicated way.
The ExtUtils::Config object used for this object.
The verbosity of ExtUtils::InstallPaths. It defaults to 0
Together with module_name this controls whether a packlist will be added; it defaults to 1.
module_name
The name of the current module.
The name of the main module of the package. This is required for packlist creation, but in the future it may be replaced by dist_name. It defaults to dist_name =~ s/-/::/gr if dist_name is set.
dist_name =~ s/-/::/gr
If you want to install everything into a temporary directory first (for instance, if you want to create a directory tree that a package manager like rpm or dpkg could create a package from), you can use the destdir parameter. E.g. Setting destdir to "/tmp/foo" will effectively install to "/tmp/foo/$sitelib", "/tmp/foo/$sitearch", and the like, except that it will use File::Spec to make the pathnames work correctly on whatever platform you're installing on.
rpm
dpkg
"/tmp/foo"
File::Spec
Create a new ExtUtils::InstallPaths object. All attributes are valid arguments to the constructor, as well as this:
This must be a hashref with the type as keys and the destination as values.
install_base_relpaths
This must be a hashref with types as keys and a path relative to the install_base as value.
prefix_relpaths
This must be a hashref any of these three keys: core, vendor, site. Each of the values mush be a hashref with types as keys and a path relative to the prefix as value. You probably want to make these three hashrefs identical.
original_prefix
This must be a hashref with the legal installdirs values as keys and the prefix directories as values.
install_sets
This mush be a hashref with the legal installdirs are keys, and the values being hashrefs with types as keys and locations as values.
Return a map suitable for use with ExtUtils::Install. In most cases, this is the only method you'll need.
Returns the destination of a certain type.
Return a list of all supported install types in the current configuration.
Given a file type, will return true if the file type would normally be installed when neither install-base nor prefix has been set. I.e. it will be true only if the path is set from the configuration object or set explicitly by the user via install_path.
Gets the install path for a certain type.
Get the path for a certain $type with a certain $installdirs.
$type
$installdirs
Get the relative paths for use with install_base for a certain type.
Gets the path of a certain $type and $installdirs relative to the prefix.
Get the default relative path to use in case the config install paths cannot be prefixified. You do not want to use this to get any relative path, but may require it to set it for custom types.
Get the original prefix for a certain type of $installdirs.
Build.PL spec
Ken Williams <kwilliams@cpan.org>
Leon Timmermans <leont@cpan.org>
This software is copyright (c) 2011 by Ken Williams, Leon Timmermans.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install ExtUtils::InstallPaths, copy and paste the appropriate command in to your terminal.
cpanm
cpanm ExtUtils::InstallPaths
CPAN shell
perl -MCPAN -e shell install ExtUtils::InstallPaths
For more information on module installation, please visit the detailed CPAN module installation guide.