while (<>) {
   if ($_ =~ /\^E/gi || $_ =~ /gmake.*/gi) {
      push (@errors, $_)
   }
} 

##</code><code>##

while (<>) {
   if (/\^E|gmake/i) {
      push(@errors, $_);
   }
} 

##</code><code>##

while (<>) {
   if (/^(?:\^E|gmake)\s*:/) {
      push(@errors, $_);
   }
}