I want to add the PQCancel() functionality to PyGreSQL.
Until now, PyGreSQL works with PostgreSQL 7.3+, but
unfortunately, PQCancel() is only available from 8.0+.
In order to not break compilation of PyGreSQL on systems with PG7,
I would like to do something like the following:
#if PQLIB_VERSION_MAJOR < 8
c = PQgetCancel(conn)
PQCancel(c, errbuf, 256)
However, there is no such thing as "PQLIB_VERSION_MAJOR".
Anything else I could query instead?
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