AutoSplit - split a package for autoloading
perl -e 'use AutoSplit; autosplit_lib_modules(@ARGV)' ...
use AutoSplit; autosplit($file, $dir, $keep, $check, $modtime);
for perl versions 5.002 and later:
perl -MAutoSplit -e 'autosplit($ARGV, $ARGV, $k, $chk, $modtime)' ...
This function will split up your program into files that the AutoLoader
module can handle. It is used by both the standard perl libraries and by
the MakeMaker utility, to automatically configure libraries for
The autosplit interface splits the specified file into a hierarchy rooted
at the directory $dir. It creates directories as needed to reflect class
hierarchy, and creates the file autosplit.ix. This file acts as both
forward declaration of all package routines, and as timestamp for the
last update of the hierarchy.
The remaining three arguments to autosplit govern other options to the
autosplitter. If the third argument, $keep, is false, then any preexisting
*.al files in the autoload directory are removed if they are no
longer part of the module (obsoleted functions). The fourth argument,
$check, instructs autosplit to check the module currently being split to
ensure that it does include a use specification for the AutoLoader
module, and skips the module if AutoLoader is not detected. Lastly, the
$modtime argument specifies that autosplit is to check the modification
time of the module against that of the autosplit.ix file, and only split
the module if it is newer.
Typical use of AutoSplit in the perl MakeMaker utility is via the
perl -e 'use AutoSplit; autosplit($ARGV, $ARGV, 0, 1, 1)'
Defined as a Make macro, it is invoked with file and directory arguments;
autosplit will split the specified file into the specified directory and
delete obsolete .al files, after checking first that the module does use
the AutoLoader, and ensuring that the module is not already currently
split in its current form (the modtime test).
The autosplit_lib_modules form is used in the building of perl. It takes
as input a list of files (modules) that are assumed to reside in a
directory lib relative to the current directory. Each file is sent to the
autosplitter one at a time, to be split into the directory lib/auto.
In both usages of the autosplitter, only subroutines defined following
the perl special marker __END__ are split out into separate files. Some
routines may be placed prior to this marker to force their immediate
loading and parsing.
Currently, AutoSplit cannot handle multiple package specifications within
AutoSplit will inform the user if it is necessary to create the top-level
directory specified in the invocation. It is preferred that the script or
installation process that invokes AutoSplit have created the full
directory path ahead of time. This warning may indicate that the module
is being split into an incorrect path.
AutoSplit will warn the user of all subroutines whose name causes
potential file naming conflicts on machines with drastically limited (8
characters or less) file name length. Since the subroutine name is used
as the file name, these warnings can aid in portability to such systems.
Warnings are issued and the file skipped if AutoSplit cannot locate
either the __END__ marker or a "package Name;"-style specification.
AutoSplit will also emit general diagnostics for inability to create
directories or files.
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