extutils::install.3

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.\" ========================================================================
.\"
.IX Title "ExtUtils::Install 3"
.TH ExtUtils::Install 3 "2007-12-18" "perl v5.10.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
ExtUtils::Install \- install files from here to there
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use ExtUtils::Install;
\&
\&  install({ \*(Aqblib/lib\*(Aq => \*(Aqsome/install/dir\*(Aq } );
\&
\&  uninstall($packlist);
\&
\&  pm_to_blib({ \*(Aqlib/Foo/Bar.pm\*(Aq => \*(Aqblib/lib/Foo/Bar.pm\*(Aq });
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Handles the installing and uninstalling of perl modules, scripts, man
pages, etc...
.PP
Both \fIinstall()\fR and \fIuninstall()\fR are specific to the way
ExtUtils::MakeMaker handles the installation and deinstallation of
perl modules. They are not designed as general purpose tools.
.PP
On some operating systems such as Win32 installation may not be possible
until after a reboot has occured. This can have varying consequences:
removing an old \s-1DLL\s0 does not impact programs using the new one, but if
a new \s-1DLL\s0 cannot be installed properly until reboot then anything
depending on it must wait. The package variable
.PP
.Vb 1
\&  $ExtUtils::Install::MUST_REBOOT
.Ve
.PP
is used to store this status.
.PP
If this variable is true then such an operation has occured and
anything depending on this module cannot proceed until a reboot
has occured.
.PP
If this value is defined but false then such an operation has
ocurred, but should not impact later operations.
.Sh "Functions"
.IX Subsection "Functions"
.IP "\fBinstall\fR" 4
.IX Item "install"
.Vb 2
\&    install(\e%from_to);
\&    install(\e%from_to, $verbose, $dont_execute, $uninstall_shadows, $skip);
.Ve
.Sp
Copies each directory tree of \f(CW%from_to\fR to its corresponding value
preserving timestamps and permissions.
.Sp
There are two keys with a special meaning in the hash: \*(L"read\*(R" and
\&\*(L"write\*(R".  These contain packlist files.  After the copying is done,
\&\fIinstall()\fR will write the list of target files to \f(CW$from_to\fR{write}. If
\&\f(CW$from_to\fR{read} is given the contents of this file will be merged into
the written file. The read and the written file may be identical, but
on \s-1AFS\s0 it is quite likely that people are installing to a different
directory than the one where the files later appear.
.Sp
If \f(CW$verbose\fR is true, will print out each file removed.  Default is
false.  This is \*(L"make install VERBINST=1\*(R". \f(CW$verbose\fR values going
up to 5 show increasingly more diagnostics output.
.Sp
If \f(CW$dont_execute\fR is true it will only print what it was going to do
without actually doing it.  Default is false.
.Sp
If \f(CW$uninstall_shadows\fR is true any differing versions throughout \f(CW@INC\fR
will be uninstalled.  This is \*(L"make install UNINST=1\*(R"
.Sp
As of 1.37_02 \fIinstall()\fR supports the use of a list of patterns to filter
out files that shouldn't be installed. If \f(CW$skip\fR is omitted or undefined
then install will try to read the list from \s-1INSTALL\s0.SKIP in the \s-1CWD\s0.
This file is a list of regular expressions and is just like the
\&\s-1MANIFEST\s0.SKIP file used by ExtUtils::Manifest.
.Sp
A default site \s-1INSTALL\s0.SKIP may be provided by setting then environment
variable \s-1EU_INSTALL_SITE_SKIPFILE\s0, this will only be used when there
isn't a distribution specific \s-1INSTALL\s0.SKIP. If the environment variable
\&\s-1EU_INSTALL_IGNORE_SKIP\s0 is true then no install file filtering will be
performed.
.Sp
If \f(CW$skip\fR is undefined then the skip file will be autodetected and used if it
is found. If \f(CW$skip\fR is a reference to an array then it is assumed
the array contains the list of patterns, if \f(CW$skip\fR is a true non reference it is
assumed to be the filename holding the list of patterns, any other value of
\&\f(CW$skip\fR is taken to mean that no install filtering should occur.
.IP "\fBinstall_default\fR \fI\s-1DISCOURAGED\s0\fR" 4
.IX Item "install_default DISCOURAGED"
.Vb 2
\&    install_default();
\&    install_default($fullext);
.Ve
.Sp
Calls \fIinstall()\fR with arguments to copy a module from blib/ to the
default site installation location.
.Sp
\&\f(CW$fullext\fR is the name of the module converted to a directory
(ie. Foo::Bar would be Foo/Bar).  If \f(CW$fullext\fR is not specified, it
will attempt to read it from \f(CW@ARGV\fR.
.Sp
This is primarily useful for install scripts.
.Sp
\&\fB\s-1NOTE\s0\fR This function is not really useful because of the hard-coded
install location with no way to control site vs core vs vendor
directories and the strange way in which the module name is given.
Consider its use discouraged.
.IP "\fBuninstall\fR" 4
.IX Item "uninstall"
.Vb 2
\&    uninstall($packlist_file);
\&    uninstall($packlist_file, $verbose, $dont_execute);
.Ve
.Sp
Removes the files listed in a \f(CW$packlist_file\fR.
.Sp
If \f(CW$verbose\fR is true, will print out each file removed.  Default is
false.
.Sp
If \f(CW$dont_execute\fR is true it will only print what it was going to do
without actually doing it.  Default is false.
.IP "\fBpm_to_blib\fR" 4
.IX Item "pm_to_blib"
.Vb 2
\&    pm_to_blib(\e%from_to, $autosplit_dir);
\&    pm_to_blib(\e%from_to, $autosplit_dir, $filter_cmd);
.Ve
.Sp
Copies each key of \f(CW%from_to\fR to its corresponding value efficiently.
Filenames with the extension .pm are autosplit into the \f(CW$autosplit_dir\fR.
Any destination directories are created.
.Sp
\&\f(CW$filter_cmd\fR is an optional shell command to run each .pm file through
prior to splitting and copying.  Input is the contents of the module,
output the new module contents.
.Sp
You can have an environment variable \s-1PERL_INSTALL_ROOT\s0 set which will
be prepended as a directory to each installed file (and directory).
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
.IP "\fB\s-1PERL_INSTALL_ROOT\s0\fR" 4
.IX Item "PERL_INSTALL_ROOT"
Will be prepended to each install path.
.IP "\fB\s-1EU_INSTALL_IGNORE_SKIP\s0\fR" 4
.IX Item "EU_INSTALL_IGNORE_SKIP"
Will prevent the automatic use of \s-1INSTALL\s0.SKIP as the install skip file.
.IP "\fB\s-1EU_INSTALL_SITE_SKIPFILE\s0\fR" 4
.IX Item "EU_INSTALL_SITE_SKIPFILE"
If there is no \s-1INSTALL\s0.SKIP file in the make directory then this value
can be used to provide a default.
.SH "AUTHOR"
.IX Header "AUTHOR"
Original author lost in the mists of time.  Probably the same as Makemaker.
.PP
Production release currently maintained by demerphq \f(CW\*(C`yves at cpan.org\*(C'\fR
.PP
Send bug reports via http://rt.cpan.org/.  Please send your
generated Makefile along with your report.
.SH "LICENSE"
.IX Header "LICENSE"
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
.PP
See <http://www.perl.com/perl/misc/Artistic.html>