> So am i right; if not then how should we compile to enable > BDB_FILTER_INDICES ? Or is it that it was previously used and WILL NOT be > used anymore ? You need to define it by hand, e.g. CPPFLAGS=-DBDB_FILTER_INDICES ./configure --enable-bdb in fact you should use it only if you're DEBUGGING back-bdbA indices. Pierangelo.