+The same is true for the @option{--enable-parport_giveio} option, you have to
+use both the @option{--enable-parport} AND the @option{--enable-parport_giveio} option if you want to use giveio instead of ioperm parallel port access method.
+
+@section FT2232C Based USB Dongles
+
+There are 2 methods of using the FTD2232, either (1) using the
+FTDICHIP.COM closed source driver, or (2) the open (and free) driver
+libftdi. Some claim the (closed) FTDICHIP.COM solution is faster.
+
+The FTDICHIP drivers come as either a (win32) ZIP file, or a (Linux)
+TAR.GZ file. You must unpack them ``some where'' convient. As of this
+writing (12/26/2008) FTDICHIP does not supply means to install these
+files ``in an appropriate place'' As a result, there are two
+``./configure'' options that help.
+
+Below is an example build process:
+
+1) Check out the latest version of ``openocd'' from SVN.
+
+2) Download & unpack either the Windows or Linux FTD2xx drivers
+ (@uref{http://www.ftdichip.com/Drivers/D2XX.htm}).
+
+@example
+ /home/duane/ftd2xx.win32 => the Cygwin/Win32 ZIP file contents.
+ /home/duane/libftd2xx0.4.16 => the Linux TAR.GZ file contents.
+@end example
+
+3) Configure with these options:
+
+@example
+Cygwin FTDICHIP solution:
+ ./configure --prefix=/home/duane/mytools \
+ --enable-ft2232_ftd2xx \
+ --with-ftd2xx-win32-zipdir=/home/duane/ftd2xx.win32
+
+Linux FTDICHIP solution:
+ ./configure --prefix=/home/duane/mytools \
+ --enable-ft2232_ftd2xx \
+ --with-ft2xx-linux-tardir=/home/duane/libftd2xx0.4.16
+
+Cygwin/Linux LIBFTDI solution:
+ Assumes:
+ 1a) For Windows: The Windows port of LIBUSB is in place.
+ 1b) For Linux: libusb has been built/installed and is in place.
+
+ 2) And libftdi has been built and installed
+ Note: libftdi - relies upon libusb.
+
+ ./configure --prefix=/home/duane/mytools \
+ --enable-ft2232_libftdi
+
+@end example
+
+4) Then just type ``make'', and perhaps ``make install''.