or download this
ln -s perl64_mhdrg.so libmhdrg.so
perl -MDynaLoader -I . -e 'package mhdrg; use parent "DynaLoader";
+bootstrap mhdrg; package main; mhdrg("f22", "/usr/tmp/drgmasks","1","
+34","2","V3000"," ","5","4");'
perl: symbol lookup error: ./libmhdrg.so: undefined symbol: Perl_Ts
+tack_sp_ptr