This tutorial describes pocketsphinx 5 pre-alpha release. It is not up-to-date with the current development version and will be updated soon.

Install is simple, you need to setup and properly configure alsa, then you can just build and run pocketsphinx

sudo apt-get update
sudo apt-get upgrade
cat /proc/asound/cards

check your microphone is visible or not and if on which usb extension

 sudo nano /etc/modprobe.d/alsa-base.conf

Now change this

 # Keep snd-usb-audio from being loaded as first soundcard 
 options snd-usb-audio index=-2

To options snd-usb-audio index=0

if there is some other options snd-usb-audio index=1, comment it out

 sudo reboot 
 cat /proc/asound/cards 
 check your device is at 0
 sudo apt-get install bison
 sudo apt-get install libasound2-dev

download sphinxbase latest , extract

 ./configure --enable-fixed
 sudo make install

download pocketsphinx, extract

 sudo make install
 export LD_LIBRARY_PATH=/usr/local/lib 
 export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

Run it, should work

 pocketsphinx_continuous -inmic yes