SR_ARG_OPT_PKG([libserialport], [LIBSERIALPORT], [NEED_SERIAL],
[libserialport >= 0.1.1])
-SR_ARG_OPT_PKG([libftdi], [LIBFTDI],,
- [libftdi1 >= 1.0], [libftdi >= 0.16])
+SR_ARG_OPT_PKG([libftdi], [LIBFTDI], , [libftdi1 >= 1.0])
# FreeBSD comes with an "integrated" libusb-1.0-style USB API.
# This means libusb-1.0 is always available; no need to check for it.