First download tdb source code, and build and install tdb.
./configure --prefix=/opt/tdb
sudo make install
Then, build & install fdm
LDFLAGS="-L/opt/tdb/lib -L/usr/local/opt/openssl/lib" LIBS="-ltdb -lcrypto" CFLAGS="-I/opt/tdb/include -I/usr/local/opt/openssl/include" ./configure --prefix=/opt/fdm