AC_ARG_ENABLE([usb_blaster_libftdi],
AS_HELP_STRING([--enable-usb_blaster_libftdi], [Enable building support for the Altera USB-Blaster using the libftdi driver, opensource alternate of FTD2XX]),
[build_usb_blaster_libftdi=$enableval], [build_usb_blaster_libftdi=no])
AC_ARG_ENABLE([usb_blaster_libftdi],
AS_HELP_STRING([--enable-usb_blaster_libftdi], [Enable building support for the Altera USB-Blaster using the libftdi driver, opensource alternate of FTD2XX]),
[build_usb_blaster_libftdi=$enableval], [build_usb_blaster_libftdi=no])