Once you have the compile done, copy the sample cdr_pgsql.conf file or create your own.
Here is a sample:
/etc/asterisk/cdr_pgsql.conf ; Sample Asterisk config file for CDR logging to PostgresSQL [global] hostname=localhost port=5432 dbname=asterisk password=password user=postgres table=cdr
CREATE TABLE cdr ( calldate time NOT NULL , clid varchar (80) NOT NULL , src varchar (80) NOT NULL , dst varchar (80) NOT NULL , dcontext varchar (80) NOT NULL , channel varchar (80) NOT NULL , dstchannel varchar (80) NOT NULL , lastapp varchar (80) NOT NULL , lastdata varchar (80) NOT NULL , duration int NOT NULL , billsec int NOT NULL , disposition varchar (45) NOT NULL , amaflags int NOT NULL , accountcode varchar (20) NOT NULL , uniqueid varchar (150) NOT NULL , userfield varchar (255) NOT NULL );