title: How can I set library and include paths for Makefile.PL for a single installation?
body: <p>How can I tell CPAN to give <code>Makefile.PL</code> one specific argument in one specific installation?</p>
  
  <p>Specifically. I want to install <code>XML::LibXML</code>, and <code>apt-get</code> installed the library to <code>/usr/lib/libxml2.so.2.6.32</code>. <code>Makefile.PL</code> has problems with that and tells me:</p>
  
  <pre><code>using fallback values for LIBS and INC
  options:
    LIBS='-L/usr/local/lib -L/usr/lib -lxml2 -lm'
    INC='-I/usr/local/include -I/usr/include'
  If this is wrong, Re-run as:
    $ /usr/bin/perl Makefile.PL LIBS='-L/path/to/lib' INC='-I/path/to/include'
  
  looking for -lxml2... no
  looking for -llibxml2... no
  libxml2 not found
  Try setting LIBS and INC values on the command line
  Or get libxml2 from 
    http://xmlsoft.org/
  </code></pre>
  
  <p>I know where the libxml2 is, but I don't know how to tell it to the <code>Makefile.PL</code>.</p>
  
  <p>edit: When I do <code>dpkg -L libxml2</code> (it's a debian), I see </p>
  
  <pre><code>/.
  /usr
  /usr/lib
  /usr/lib/libxml2.so.2.6.32
  /usr/share
  /usr/share/doc
  /usr/share/doc/libxml2
  /usr/share/doc/libxml2/AUTHORS
  /usr/share/doc/libxml2/changelog.Debian.gz
  /usr/share/doc/libxml2/copyright
  /usr/share/doc/libxml2/README
  /usr/share/doc/libxml2/README.Debian
  /usr/share/doc/libxml2/NEWS.gz
  /usr/share/doc/libxml2/changelog.gz
  /usr/share/doc/libxml2/TODO.gz
  /usr/lib/libxml2.so.2
  </code></pre>
  
  <p>I am not a root on that machine and I can't make symlink in <code>/usr/lib</code> or repair it.</p>