FreeBSD

Installation from packages

pkg install fusefs-encfs

Installation from ports

cd /usr/ports/sysutils/fusefs-encfs/
make build
make install
make clean

Installation from sources

1. Get last EncFS version.

2. Compile, test and install following the INSTALL.md file from the version you use.
   For example, for 1.9.5 : https://github.com/vgough/encfs/blob/v1.9.5/INSTALL.md

Warnings

There may be some issues in reverse mode, when backing files are modified.
See this : https://github.com/vgough/encfs/issues/315#issuecomment-288197962