lib that makes relative path absolute to caller.
Simple use like
use lib ...:
use lib::abs qw(./mylibs1 ../mylibs2); use lib::abs 'mylibs'; # if your path may not exists and it is ok, then: use lib::abs -soft => qw(./mylibs1 ../mylibs2);
Extended syntax (glob)
use lib::abs 'modules/*/lib';
There are also may be used helper function from lib::abs (see example/ex4):
use lib::abs; # ... my $path = lib::abs::path('../path/relative/to/me'); # returns absolute path
The main reason of this library is transformate relative paths to absolute at the
BEGIN stage, and push transformed to
@INC. Relative path basis is not the current working directory, but the location of file, where the statement is (caller file). When using common
lib, relative paths stays relative to curernt working directory,
# For ex: # script: /opt/scripts/my.pl use lib::abs '../lib'; # We run `/opt/scripts/my.pl` having cwd /home/mons # The @INC will contain '/opt/lib'; # We run `./my.pl` having cwd /opt # The @INC will contain '/opt/lib'; # We run `../my.pl` having cwd /opt/lib # The @INC will contain '/opt/lib';
Also this module is useful when writing tests, when you want to load strictly the module from ../lib, respecting the test file.
# t/00-test.t use lib::abs '../lib';
Also this is useful, when you running under
mod_perl, use something like
Apache::StatINC, and your application may change working directory. So in case of chdir
StatINC fails to reload module if the @INC contain relative paths.
Q: We already have
lib, why we need this module?
A: There are several reasons:
FindBincould find path incorrectly under
FindBinworks relatively to executed binary instead of relatively to caller
- 3) Perl is linguistic language, and
`use lib::abs "..."'semantically more clear and looks more beautiful than
`use FindBin; use lib "$FindBin::Bin/../lib";'
FindBinb<will> work incorrectly, if will be called not from executed binary (see http://github.com/Mons/lib-abs-vs-findbin comparison for details)
Copyright 2007-2010 Mons Anderson.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.