postgresql/contrib/dblink/input/paths.source

-- Initialization that requires path substitution.

CREATE FUNCTION putenv(text)
   RETURNS void
   AS '@libdir@/regress@DLSUFFIX@', 'regress_putenv'
   LANGUAGE C STRICT;

CREATE FUNCTION wait_pid(int)
   RETURNS void
   AS '@libdir@/regress@DLSUFFIX@'
   LANGUAGE C STRICT;

CREATE FUNCTION set_pgservicefile(text) RETURNS void LANGUAGE SQL
    AS $$SELECT putenv('PGSERVICEFILE=@abs_srcdir@/' || $1)$$;