Hi, As I said, its just a wrapper over C functions, there's not much of code in it (works with Dynaloader and AutoLoader). It works fine if I use this module alone. Here is the code: 
package ABC;

$ABC::VERSION = '0.02';

use strict;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);

require Exporter;
require DynaLoader;
require AutoLoader;

@ISA = qw(Exporter AutoLoader DynaLoader);

# Items to export into callers namespace by default.
@EXPORT = qw(
         new_time_var
         dl_ascii_to_date
         dl_ascii_to_time
         dl_close_cache
);
@EXPORT_OK = qw();

bootstrap ABC $VERSION;

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and here is the wrapper module: 
package PQR;
use strict;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);

require Exporter;
require AutoLoader;
use ABC;

$PQR::VERSION = $ABC::VERSION;

@ISA = qw(Exporter AutoLoader);
@EXPORT = qw(
         new_time_var
         dl_ascii_to_date
         dl_ascii_to_time
         dl_close_cache
            );
            
@EXPORT_OK = qw();

sub new_time_var
{
    return ABC::new_time_var(@_);
}

sub dl_ascii_to_date
{
    return ABC::dl_ascii_to_date(@_);
}

sub dl_ascii_to_time
{
    return ABC::dl_ascii_to_time(@_);
}

sub dl_close_cache
{
    return ABC::dl_close_cache(@_);    
}

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The actual subroutine signatures are: 
<new_time_var>()
<dl_ascii_to_date>(<string>)
<dl_ascii_to_time>(<string>, <dtp>)
<dl_close_cache>(<dcp>)

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When I test this using a script I get the following errors: 
>/u/agarwsun/test> perl -wc test.pl

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Prototype mismatch: sub PQR::new_time_var () vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 71.
Subroutine new_time_var redefined at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 67.
Prototype mismatch: sub PQR::dl_ascii_to_date ($) vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 76. Subroutine dl_ascii_to_date redefined at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 74.
Prototype mismatch: sub PQR::dl_ascii_to_time ($$) vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 81.
If I do not re-export the functions in PQR, and extend from ABC, I don't get the errors related to redefining subroutines, but I still get prototype mismatch errors:
Prototype mismatch: sub ABC::new_time_var () vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 22.
Prototype mismatch: sub ABC::dl_ascii_to_date ($) vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 27.
Prototype mismatch: sub Deshaw::DateLib::dl_ascii_to_time ($$) vs none at /u/agarwsun/projects/packages/datelib/lib/perl5/5.8.6/i86pc-solaris/PQR.pm line 32.

In reply to Creating wrapper over a wrapper by sunnyagarwal008

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