trouble building ruby-dbi in cygwin

Hello,

I am trying to install ruby-dbi in my cygwin environment (win xp) and am
having trouble.  

[akitchen@akitchen:~/work/dev/ruby-dbi-all]$ ruby setup.rb setup
entering setup phase...
setting #! line to "#!/usr/bin/ruby"
setting #! line to "#!/usr/bin/ruby"
/usr/bin/ruby extconf.rb
C:\cygwin\bin\ruby.exe (2152): *** unable to remap
C:\cygwin\lib\ruby\1.8\i386-cygwin\Win32API.so to same address as
parent(0x330000) != 0x340000

I am familiar with using rebase to fix similar problems with .dll files,
but what about .so?  Do I need to compile some required dlls before
running setup.rb?

thanks for any help

-Andrew