"librevisa >= 0.0.20130412" "libusb-1.0 >= 1.0.16" "libftdi >= 0.16" \
"libftdi1 >= 1.0" "libgpib" "glibmm-2.4 >= 2.32.0" \
"pygobject-3.0 >= 3.0.0" "check >= 0.9.4"
do
optional="OPTIONAL"
"librevisa >= 0.0.20130412" "libusb-1.0 >= 1.0.16" "libftdi >= 0.16" \
"libftdi1 >= 1.0" "libgpib" "glibmm-2.4 >= 2.32.0" \
"pygobject-3.0 >= 3.0.0" "check >= 0.9.4"
do
optional="OPTIONAL"