Part of this may be my C skills not being good enough - if so, please enlighten me :-)
My pg_streamrecv no longer works with 9.1, because it returns PGRES_COPY_BOTH instead of PGRES_COPY_OUT when initating a copy. That's fine. So I'd like to make it work on both. Specifically, I would like it to check for PGRES_COPY_BOTH if the server is 9.1 and PGRES_COPY_OUT if it's 9.0. Which can be done by checking the server version. However, when built against a libpq 9.0, it doesn't even have the symbol PGRES_COPY_BOTH. And I can't check for the presence of said symbol using #ifdef, since it's an enum. Nor is there a #define available to check the version of the header. Is there any way to check this at compile time (so I know if I can use the symbol or not), without using autoconf (I don't want to bring in such a huge dependency for a tiny program)? Also, I notice that PGRES_COPY_BOTH was inserted "in the middle" of the enum. Doesn't that mean we can get incorrect values for e.g. PGRES_FATAL_ERROR if the client is built against one version of libpq but executes against another? Shouldn't all such enum values always be added at the end? Finaly, as long as I only use "the 9.0 style replication", PGRES_COPY_BOTH is actually unnecessary, right? It will work exactly the same way as PGRES_COPY_OUT? -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
