Update wiringPi
create a tmp folder on e.g. the Desktop, then in a terminal window
	$ cd Desktop/tmp
	$ wget https://project-downloads.drogon.net/wiringpi-latest.deb
	$ sudo dpkg -i wiringpi-latest.deb

Next, install ncurses
	$ sudo apt-get install ncurses-dev

Install FFTW3
download the latest release from www.fftw.org, tarball format
extract the tarball in e.g. the Desktop, then in a terminal window
	$ ./configure
	$ make
	$ sudo make install
repeat this i.o. to install the single precision float support
	$ ./configure --enable-float
	$ make
	$ sudo make install
note: make takes a very long time, be patient

Install asound and gtk libraries
	$ sudo apt-get install libasound2-dev
	$ sudo apt-get install libgtk-3-dev

Open and edit /boot/config.txt, add these lines:

	# GPIO definitions
	gpio=4,17,27,22,10,9,11,5,6,13,26,16,12,7,8,25,24=ip,pu
	gpio=24,23=op,pu

	#Disable under-voltage warning
	avoid_warnings=1

	# Enable audio (loads snd_bcm2835)
	#dtparam=audio=on
	dtoverlay=audioinjector-wm8731-audio

close and save, need to sudo in order to save it in /boot

Clean up tmp and fftw folders

Create a loopback device
	$ sudo modprobe snd-aloop
then, configure this device, use VOX with loopback device
	plughw:CARD=Loopback,DEV=1
note: could not figure out where to put this configuration, may be superfluous

Reboot

download the latest version of Ashhar's sbitx repository on github
extract the zip file on the Desktop, creating the folder main-sbitx

Build sbitx, in a terminal window
	$ cd Desktop/main-sbitx
	$ ./build sbitx

Run sbitx, in a terminal window
	$ cd Desktop/main-sbitx
	$ ./sbitx

sbitx runs for a while the opens the gui window