Put your assignment into the BEGIN block. 

package SearchMachine;

BEGIN {
       $mod1 = "/path/Mysearch.pm";
       require qq($mod1);
      }
1;

[download]
or put it into a BEGIN block of it's own: 
package SearchMachine;

BEGIN {
       $mod1 = "/path/Mysearch.pm";
      }

BEGIN {
       require qq($mod1);
      }
1;

[download]
All BEGIN blocks are executed first, in order, before any other code is even compiled. See perlmod, section BEGIN, CHECK, INIT and END. And, for the record, it's spelled dynamic loading ;-)

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^3: dynamic loading of modules by shmem
in thread dynamic loading of modules by opensourcer

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