lib - manipulate @INC at compile time
use lib LIST;
<![CDATA[
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
<![CDATA[
use lib LIST;
]]>
is the same as saying
<![CDATA[
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:
<![CDATA[
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
<![CDATA[
@INC = @lib::ORIG_INC;
]]>
or
<![CDATA[
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.