This tutorial explains how you can install lft directly from source code on macOS. Tested on macOS 10.9.5.

First grab a compressed archive from an official lftsource site:

curl -o ./lft-3.73.tar.gz -O http://pwhois.org/dl/index.who?file=lft-3.73.tar.gz

Next, decompress the archive like this:

tar -xf lft-3.*.tar.gz

Now go into the decompressed directory:

cd lft-3.*

Run this configure command:

./configure

Once the configure process completes, run make:

make

Finally install it by running sudo make install:

sudo make install

And once it’s installed, run the command with -v to do a simple check to see it’s working:

lft -v