The accepted solution seems to be to use eval with require (You can't do a 'use' inside an 'eval').
my $loaded;
{
   # ignore warnings if subs are being redefined
   local $^W = 0;
   $loaded = eval "require MQSeries";
}
if(!defined($loaded))
{
   print "Can't load MQSeries: $@\n";
}

[download]
Note: you'll need an 'import' in there if you also want to import exported methods etc.

update: Apparently 'use' does work in 'eval', I can't for the life of me remember why I thought you can't, must have been some reason that I use require.. hohum..

C.

In reply to Re: Optional modules? by castaway
in thread Optional modules? by Jeppe

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