How do I include a Perl module that s in a different directory

Question

How do I include a Perl module that s in a different directory   It needs to be a relative path from the module that s including it   I ve tried   push    INC  directory path more path      also  push    INC  directory path  more path

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I ll tell you how it can be done in eclipse  My dev system - Windows 64bit  Eclipse Luna  Perlipse plugin for eclipse  Strawberry pearl installer  I use perl exe as my interpreter   Eclipse   create new perl project   right click project   build path   configure build path   libraries tab   add external source folder   go to the folder where all your perl modules are installed   ok   ok  Done

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I m surprised nobody has mentioned it before  but FindBin  libs will always find your libs as it searches in all reasonable places relative to the location of your script      usr bin perl use FindBin  libs  use  lt your lib gt

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From perlfaq8      How do I add the directory my program lives in to the module library search path    contributed by brian d foy   If you know the directory already  you can add it to  INC as you would for any other directory  You might use lib if you know the directory at compile time   use lib  directory    The trick in this task is to find the directory  Before your script does anything else  such as a chdir   you can get the current working directory with the Cwd module  which comes with Perl   BEGIN       use Cwd      our  directory   cwd         use lib  directory    You can do a similar thing with the value of  0  which holds the script name  That might hold a relative path  but rel2abs can turn it into an absolute path  Once you have the  BEGIN       use File  Spec  Functions qw rel2abs       use File  Basename qw dirname        my  path     rel2abs   0        our  directory   dirname   path           use lib  directory    The FindBin module  which comes with Perl  might work  It finds the directory of the currently running script and puts it in  Bin  which you can then use to construct the right library path   use FindBin qw  Bin

User · Answer

EDIT  Putting the right solution first  originally from this question   It s the only one that searches relative to the module directory   use FindBin                    locate this script use lib   FindBin  Bin         use the parent directory use yourlib    There s many other ways that search for libraries relative to the current directory   You can invoke perl with the -I argument  passing the directory of the other module   perl -I   yourscript pl   You can include a line near the top of your perl script   use lib         You can modify the environment variable PERL5LIB before you run the script   export PERL5LIB  PERL5LIB      The push  INC  strategy can also work  but it has to be wrapped in BEGIN   to make sure that the push is run before the module search   BEGIN  push  INC        use yourlib

User · Answer

use lib  can also take a single string value        usr bin perl use lib   lt relative-path gt    use  lt your lib gt

User · Answer

Most likely the reason your push did not work is order of execution   use is a compile time directive   You push is done at execution time   push    INC  directory path more path    use Foo pm     In directory path more path   You can use a BEGIN block to get around this problem   BEGIN       push    INC  directory path more path      use Foo pm     In directory path more path   IMO  it s clearest  and therefore best to use lib   use lib  directory path more path   use Foo pm     In directory path more path   See perlmod for information about BEGIN and other special blocks and when they execute   Edit  For loading code relative to your script library  I strongly endorse File  FindLib  You can say use File  FindLib  my test libs   to look for a library directory anywhere above your script in the path     Say your work is structured like this       home me projects       - shared           - bin           - lib       - ossum-thing          - scripts              - bin              - lib    Inside a script in ossum-thing scripts bin   use File  FindLib  lib    use File  FindLib  shared lib      Will find your library directories and add them to your  INC   It s also useful to create a module that contains all the environment set-up needed to run your suite of tools and just load it in all the executables in your project   use File  FindLib  lib MyEnvironment pm

[perl] How do I include a Perl module that's in a different directory?

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