[Libdlo] libdlo dependency problem with xubuntu 12.04?

[S W]

Hi,
I'v been happily running libdlo 0.1.2 under xubuntu 11.04 to power a
plugable usb-vga converter.  I'd like to upgrade to xubuntu 12.04, but when
I tried to compile the vnc2dl package

   https://github.com/quentinsf/vnc2dl/wiki

(which ran beautifully under 11.04) it failed:

gcc -m32 -o vnc2dl -g -O2 -fno-strict-aliasing       args.o caps.o
dldevice.o listen.o rfbproto.o sockets.o tunnel.o vnc2dl.o
../libvncauth/libvncauth.a -L/usr/local/lib -lz -L/usr/local/lib -ljpeg
-lusb /usr/local/lib/libdlo.a
/usr/local/lib/libdlo.a(libdlo_la-dlo_usb.o): In function `usb_error_grab':
/home/xubuntu/Downloads/libdlo-0.1.2/src/dlo_usb.c:503: undefined reference
to `usb_strerror'
/usr/local/lib/libdlo.a(libdlo_la-dlo_usb.o): In function
`dlo_usb_enumerate':
/home/xubuntu/Downloads/libdlo-0.1.2/src/dlo_usb.c:152: undefined reference
to `usb_find_busses'

(plus lots of similar error messages -- please see the attached output of
the make file).

Question:  Is this caused by libdlo using an old library that's not
supported by xubuntu 12.04?  Like I said I have problem compiling vnc2dl
under 11.04.

Just to clarify:  The error occured when I compile vnc2dl;  I have no
problem building libdlo (and "make check" ran correctly).  Also, I did
install libusb-0.1.4 and libusb-dev.

For your refernece, I've enclosed below the output of the make file for
vnc2dl: one under 12.04 (with errors), and under 11.04.

Thanks!
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