'use lib' question

[nan li]

Hello,
I have a simple file below.

#t11.pl
use strict;
use warnings;

use Env qw(XYZ);
use lib "$XYZ";

I tried to set up the library path for perl. But I got the following
error.

perl -c t11.pl

Use of uninitialized value in string at t11.pl line 5.
Empty compile time value given to use lib at t11.pl line 5
t11.pl syntax OK

I guess the problem is that 'use lib' runs at compile time and $XYZ is
not available at that time. Is my guess correct? If so, is there any
good way I can do the same thing at run time ?

Thanks a lot.

 

[Paul Lalli]

#t11.pl
use strict;
use warnings;

use Env qw(XYZ);
use lib "$XYZ";

I tried to set up the library path for perl. But I got the following
error.


Use of uninitialized value in string at t11.pl line 5.
Empty compile time value given to use lib at t11.pl line 5
t11.pl syntax OK

I guess the problem is that 'use lib' runs at compile time and $XYZ is
not available at that time. Is my guess correct? If so, is there any
good way I can do the same thing at run time ?

Don't use the Env module. Just use the actual environment variable.

use lib $ENV{XYZ};

Paul Lalli

 

[nan li]

Don't use the Env module. Just use the actual environment variable.

use lib $ENV{XYZ};

Paul Lalli

But if I use this, I still get the warning:

Empty compile time value given to use lib at t11.pl line 7

Nan

 

[John Bokma]

On Feb 2, 3:35 pm, "nan li" <[email protected]> wrote:

[..]
[..]

use lib $ENV{XYZ};

Paul Lalli

But if I use this, I still get the warning:

No, no, you get a different one.

Empty compile time value given to use lib at t11.pl line 7

Maybe because XYZ is empty...

 

[nan li]

On Feb 2, 3:35 pm, "nan li" <[email protected]> wrote:

[..]

Use of uninitialized value in string at t11.pl line 5.
Empty compile time value given to use lib at t11.pl line 5
t11.pl syntax OK

[..]

use lib $ENV{XYZ};
Paul Lalli

But if I use this, I still get the warning:

No, no, you get a different one.

Empty compile time value given to use lib at t11.pl line 7

Maybe because XYZ is empty...

You are right. I didn't set XYZ :-( Thanks a lot.