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Old 11-16-2005, 04:11 PM   #1
theNbomr
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perl ftok()


Perl question.

I am trying to use the ftok() function to generate a key for IPC mesage queue access. My installation on Scientific Linux (RH9 clone) fails to find ftok() when used according to the sample code in the documentation.

A simple example:

perl -v says:
This is perl, v5.8.5 built for i386-linux-thread-multi

Code:
#! /bin/perl -w

use strict;

use IPC::SysV;
use IPC::Msg;

my  $msgIdSeed = 0xf00d;
my  $msgIdPath = "/home/bomr/";

    foreach my $path ( @INC ){
        print $path, "\n";
    }

    my $msgKey = ftok( $msgIdPath, $msgIdSeed );

    print "Msg queue key: $msgKey\n";
Results in

[CODE]
/usr/lib/perl5/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/5.8.5
/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.5
/usr/lib/perl5/site_perl/5.8.4
/usr/lib/perl5/site_perl/5.8.3
/usr/lib/perl5/site_perl/5.8.2
/usr/lib/perl5/site_perl/5.8.1
/usr/lib/perl5/site_perl/5.8.0
/usr/lib/perl5/site_perl
/usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.5
/usr/lib/perl5/vendor_perl/5.8.4
/usr/lib/perl5/vendor_perl/5.8.3
/usr/lib/perl5/vendor_perl/5.8.2
/usr/lib/perl5/vendor_perl/5.8.1
/usr/lib/perl5/vendor_perl/5.8.0
/usr/lib/perl5/vendor_perl
.


Undefined subroutine &main::ftok called at ./ipcmsg.pl line 15.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/CODE]

I clearly see the SysV.pm module in the first member directory in @INC, and see a reference to the ftok() function exported in SysV.pm

What do I have to do to make perl find the function?

Thanks in advance.

---- rod.
 
Old 11-17-2005, 10:47 AM   #2
Harmaa Kettu
Member
 
Registered: Apr 2005
Location: Finland
Posts: 196

Rep: Reputation: 30
Ask the module to export it:
Code:
use IPC::SysV qw(ftok);
 
  


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