lib - manipulate @INC at compile time use lib LIST; no lib LIST; This is a small simple module which simplifies the manipulation of @INC at compile time. It is typically used to add extra directories to perl's search path so that later use or require statements will find modules which are not located on perl's default search path.

ADDING DIRECTORIES TO @INC
The parameters to use lib are added to the start of the perl search path. Saying use lib LIST; is the same as saying BEGIN { unshift(@INC, LIST) }

DELETING DIRECTORIES FROM @INC
You should normally only add directories to @INC. If you need to delete directories from @INC take care to only delete those which you added yourself or which you are certain are not needed by other modules in your script. Other modules may have added directories which they need for correct operation. By default the no lib statement deletes the first instance of each named directory from @INC. To delete multiple instances of the same name from @INC you can specify the name multiple times. To delete all instances of all the specified names from @INC you can specify ':ALL' as the first parameter of no lib. For example: no lib qw(:ALL .);

RESTORING ORIGINAL @INC
When the lib module is first loaded it records the current value of @INC in an array @lib::ORIG_INC. To restore @INC to that value you can say either @INC = @lib::ORIG_INC; or no lib @INC; use lib @lib::ORIG_INC; AddINC - optional module which deals with paths relative to the source file. Tim Bunce, 2nd June 1995.