You did use PREFIX=~ LIB=~/lib/perl5, right? It's normal to be in a "random" directory. It's actually the "arch" directory. A module (e.g. Foo::Bar) may install itself into 
$LIB/Foo/Bar.*

[download]
and/or 
$LIB/$ARCH/Foo/Bar.*

[download]

where $LIB is the value passed to LIB=, and $ARCH is some system-specific string.

In DBD::mysql's case, most if not all the files will be installed in the arch dir.

As long as PERL5LIB include $LIB, Perl will look into both directories. 

$ echo $PERL5LIB
/home/ikegami/lib/perl5

$ perl -V
...
  @INC:
    /home/ikegami/lib/perl5/x86_64-linux-gnu-thread-multi
    /home/ikegami/lib/perl5
...

[download]

Don't move files around, you're introducing problems!

In reply to Re^7: (Never Ending) Module Installation Issues by ikegami
in thread (Never Ending) Module Installation Issues by listanand

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.