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@INC
at compile time
use lib LIST;
no lib LIST;
@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.
use lib
are added to the start of the perl search path. Saying
use lib LIST;
is almost the same as saying
BEGIN { unshift(@INC, LIST) }
For each directory in LIST (called $dir
here) the lib module
also checks to see if a directory called $dir/$archname/auto exists. If so
the $dir/$archname directory is assumed to be a corresponding architecture
specific directory and is added to @INC
in front of $dir.
If LIST includes both $dir
and $dir/$archname then
$dir/$archname will be added to @INC
twice (if
$dir/$archname/auto exists).
@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 .);
For each directory in LIST (called $dir
here) the lib module
also checks to see if a directory called $dir/$archname/auto exists. If so
the $dir/$archname directory is assumed to be a corresponding architecture
specific directory and is also deleted from @INC.
If LIST includes both $dir
and $dir/$archname then
$dir/$archname will be deleted from @INC
twice (if
$dir/$archname/auto exists).
@INC
in an array @lib::ORIG_INC
. To restore @INC
to that value you can say
@INC = @lib::ORIG_INC;
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