Hi-
Yes, we need to update the build instructions for the newest LTS Ubuntu 16.04.
1. To install libXp, start by opening /etc/apt/sources.list (which probably requires opening the file with 'sudo'), add the following line:
deb [security.ubuntu.com] precise-security main
... then install via:
sudo apt update
sudo apt install libxp6
2. Other things to install:
sudo apt-get install -y libglu1-mesa-dev
sudo apt-get install libxm4
3. Installing GSL:
sudo apt-get install -y libgsl0-dev
sudo apt-get install -y gsl-bin
4. Setting up link for GSL. Check the output of:
find /usr/lib -name "libgsl*"
... If one of the things that shows up is:
/usr/lib/x86_64-linux-gnu/libgsl.so
Then you can enter the following:
sudo ln -s /usr/lib/x86_64-linux-gnu/libgsl.so /usr/lib/libgsl.so.0
And then you can run the system check again.
Let us know how it goes.
--pt