Trouble installing GNUnet 0.16.3 on Linux Mint

Hello,

I've decided to try and update the (hideously outdated) GNUnet 
installation on my system, and have ran into some trouble after 
completing the process: "gnunet-arm -s" crashes as it can't find its own 
shared library.

I followed the conventional process for installation from the Git 
repository:

./bootstrap
./configure
make
sudo make install

When I run "gnunet-arm -s" (or "sudo -u gnunet gnunet-arm -s") as the 
various slightly different installation guides suggest, I am met with 
the following message:

gnunet-arm: error while loading shared libraries: libgnunetarm.so.2: 
cannot open shared object file: No such file or directory

I'm stumped, as I've followed the installation instructions almost 
exactly as they are in the README. I found the offending library in 
/usr/local/lib:

lrwxrwxrwx 1 root root       21 Jun  3 18:54 libgnunetarm.so.2 -> 
libgnunetarm.so.2.0.0
-rwxr-xr-x 1 root root   106656 Jun  3 18:54 libgnunetarm.so.2.0.0

Is this correct?

Best wishes,
	Willow