[sqlite] Compilation fails under Linux (Ubuntu) when FTS5 is enabled

[to...@acm.org]

What the subject says and I get this error:

/tmp/cco8QBGJ.o: In function `fts5Bm25GetData':
sqlite3.c:(.text+0xb521b): undefined reference to `log'

(using the latest 3.9.1 release)

Any ideas?
Thanks.