[pm-h] How to update @INC from within a script?

[Kristofer Hoch]

Jay,
    That BEGIN trick is commonly used to create a singleton design  pattern.  It is very misleading, and you really have read the Perl  documentation to understand what to do and when.
  
    Glad to help,
  
  Kristofer 

Jay Vogt <jvogt at houston.oilfield.slb.com> wrote:              All,
  
  Thanks for the suggestions. Error came from a mistaken belief
  that the BEGIN statement would be executed first regardless of
  its position in the script. All worked fine once I move the BEGIN
  block to the very beginning of the script as Kristofer indicated.
  Not sure where I go the notion that BEGIN statement did not have
  to be at the start of the script.
  
  Wade - the reason for the perl with non-existent directories for @INC
  is because it is sent to clients who can install in any directory they
  want. I don't suppose that @INC can point to directories with 
  relative paths or variables in them.
  
  Thanks,
  
  Jay Vogt
  
  Kristofer Hoch wrote:
      Jay,
      Try this at the very top of your script
    
    #!/path/to/perl 
    BEGIN { push(@INC, '/path/to/DBI/directory'); }
    
    
    Jay Vogt <jvogt at houston.oilfield.slb.com> wrote:       All,
      
  When I point to a particular Perl executable the @INC array
  points to non-existent directories. I've tried to update @INC
  within my script to point to the directories which do contain DBI
  using the unshift technique found in the O'Reilly books (whether
  in a BEGIN statement or elsewhere in the script before
  I execute "use DBI"). Printing the contents of @INC (by commenting
  out "use DBI") shows that the array is modified, but when including
  "use DBI" I get an error that DBI.pm is not in @INC and it lists
  only those non-existent directories.
      
  The "use DBI" statement seems to be processed a  t script  compilation
  time and not following the BEGIN block. The only way my script
  sees the DBI module is if I set the environment variable PERL5LIB
  in an xterm before running the script. Setting $ENV{PERL5LIB}
  within my script does not work.
      
  Any suggestions on how to modify @INC from within a script
  so that it is actually read?
      
  Thanks,
      
  Jay Vogt
      
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