WriteMakefile(

...

LINKTYPE       => $LINKTYPE,
($^O eq 'VMS' ?
(MAN3PODS    => { 'Sybase.pm' => 'blib/man3/DBD_Sybase.3' }) :
(MAN3PODS    => { 'Sybase.pm' => 'blib/man3/DBD::Sybase.3' })),

...

);