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Found -lgdbm_compat (shared).

In order to compile perl5 on your machine, a number of libraries
are usually needed.  Include any other special libraries here as well.
Say "none" for none.  The default list is almost always right.
 
What libraries to use?
[-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat]