In appreciation for our forebears’ rebellion against writs of assistance (a form of general, non-expiring warrant), here is how to build VeraCrypt from scratch. This is free software you can use to encrypt a partition (or file container) on your linux box.
# install some dependencies
sudo apt-get install build-essential makeself libwxgtk3.0-dev nasm git
# now make a directory somewhere to hold software you are going to compile
# and cd into it. Using git in your home dir for this example
# grab that open source goodness
git clone https://github.com/veracrypt/VeraCrypt
# roll your own
# if it “makes” without blowing up continue on to the “success” bit below
# WARNINGS are ok. ERRORS are fatal. Start googling!
Enjoy in good health and liberty.