Hi

I have

$var = '/path/to/dir'; #top of the file before anything else

then in a subroutine I call a local module ...

sub (

use lib $var;

use MODULENAME;

)

On windows use lib $var; does not work. But it works if I put : use lib '/path/to/dir';

Why the $var is not working in use lib on windows?

Why are you defining a variable?...can you not insert the path manually?...eg

use lib '/path/to/dir';

You can add use lib to the top of your script also.

I use that module only for that routine.

That's ok, you can still add the use lib line at the top manually.

If you really do want to load it dynamically (which I honestly don't think you need to do) you will either have to use a BEGIN block to define your variable or call the import routine in the lib module.

if I put use lib '/my/own/module' at the beginning of the file will this cause problems to other modules used like

CGI, LWP, etc. ?

Nope you can load custom modules or default modules.

do you mean there are no problems?

i can't get how it works with modules. sorry

Yeah it should work fine. It is common practice.

What happens, or what errors do you see?...or did you just mean you didn't understand how it works rather than you can't get it to work?

Ok I noticed that it will be addded to @INC

Not override @INC (AND OTHER LIBS)

Thanks,

Yep @INC keeps track of perl's libraries, the only reason you need use lib is to tell perl where your own custom libraries are. Perl scans its lib tree for standard modules but it would be impractical for it to do that for custom modules as it wouldn't know where to look so performace would be really bad, so that's why you "use lib"

Perl doesn't do what you think it does here. All use statements happen at compile time. Have a look at:

http://www.perldoc.com/....0/pod/func/use.html

for more info.

Cheers,

Alex
--
Gossamer Threads Inc.

I simply added use lib at the top of the script and then the lib has been added to @INC together with other libs ;) Perfect.

Thanks.

Yes, but:

sub {
use Module;
}

does not load Module only when the sub is called, the Module will automatically be loaded every time. You need to read about the difference between use and require.

Cheers,

Alex
--
Gossamer Threads Inc.