"TJ O'Donnell" <tjo@xxxxxxx> writes: > Presumably, the only reason I would HAVE TO recompile > is when some header file changes. Is there any guarantee > that header files DO NOT change, for example from > 7.4.5 to 7.4.8 or even 7.4.12? Can I assume that header > file changes only occur between major pg changes, such as > 7.3 to 7.4, or 8.0 to 8.1? Uh, no, not really; see complaint from Thomas Hallgren in -hackers just yesterday. We don't normally change internal APIs in patch releases; in fact we don't change anything we don't have to. But we will change 'em if needed to fix a bug. You might want to eyeball the proposed "magic block" for loadable modules: http://archives.postgresql.org/pgsql-patches/2006-05/msg00124.php regards, tom lane
