This is Postgresql extension that installs Hunspell dictionaries with recognizing of the words that can be compounds of other words. The dictionaries were copied from here: http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/

make
sudo make install

If you need to specify path to pg_config

make PG_CONFIG=/usr/pgsql-12/bin/pg_config
sudo make PG_CONFIG=/usr/pgsql-12/bin/pg_config install

CREATE EXTENSION hu_de_cmp;

SELECT ts_lexize('de_cmp', 'wärmepumpen');
SELECT to_tsvector('de_cmp', 'wärmepumpen');