I updated the code in the 2nd file as follows: 
#require "common.pl";
use abc::abcUtil;
sub func {
    abc::abcUtil::check();
}

[download]
Basically removed the use of common.pl. Kept the abcUtil file as unchanged. Now it worked. But I can't keep it this way as have to use this common file. Is it some conflict due to the use of 'require "common.pl" ' in both the files?

In reply to Re^2: Undefined subroutine &abc::abcUtil::PERL_DEBUG by navneet03
in thread Undefined subroutine &abc::abcUtil::PERL_DEBUG by navneet03

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