export CFLAGS="-march=i486 -mtune=i686 -Os -pipe"
export CXXFLAGS="-march=i486 -mtune=i686 -Os -pipe -fno-exceptions -fno-rtti"

load dbus-dev, ghostscript extensions

cups-1.4.5
----------

./configure --prefix=/usr/local --sysconfdir=/usr/local/etc --localstatedir=/var --without-languages --with-cups-user=tc --with-cups-group=staff --with-fontpath=/usr/local/share/ghostscript/fonts --with-dbusdir=/usr/local/etc/dbus-1 --disable-libusb

make
sudo make install

libusb & usblp and libusb & usblp blacklisted

/usr/local/lib/cups/backend/usb
DEBUG: list_devices
DEBUG: usb_find_busses=5
DEBUG: usb_find_devices=11

wo libusb & usblp blacklisted

/usr/local/lib/cups/backend/usb
[nothing]