http://www.perlmonks.org?node_id=721493


in reply to disable functions if module not installed

Your first snippet of: 
our $is_magick = 0;
eval 'require GD';
if ($@) {
  # problems with GD, fall back to non-GD
} else {
  # we have GD, go for it!
  $is_magick = 1;
}

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works exactly as you want, when run as written above. $is_magick is set to 0 if GD is not available and 1 if GD is available.

That suggests that there's something about your implementation of this snippet in your module or program that prevents it from working.

Can you provide a sample of code that you have written which demonstrates erroneous behaviour?

Replies are listed 'Best First'.
Re^2: disable functions if module not installed
by lepetitalbert (Abbot) on Nov 04, 2008 at 23:16 UTC

    Hi,

    wrote a post on the imagemagick.

    Thank you all and don't forget to have a nice day.

    "There is only one good, namely knowledge, and only one evil, namely ignorance." Socrates
[reply]

      Hello dear Monks,

      answer from magick

      We may need help on this one because we're not well versed in Perl XS programming. Anyone have a solution for this problem?

      Any solution or hint on how to trace / check / fix this ?

      Have a nice day.

      "There is only one good, namely knowledge, and only one evil, namely ignorance." Socrates
[reply]

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