On Mon, Apr 27, 2009 at 10:51:45AM -0400, Kynn Jones wrote: > I need to compile some code that uses libpq. For this I need to determine > the directories to use for the header and library files. > > The machine I'm using has multiple copies of the files libpq-fe.h and > libpq.a. How can I determine which one of all these copies are the ones > that correspond to the Pg server that is currently running on this system? > (FWIW, the OS here is Ubuntu Linux.) In general you don't need to match the server version, the protocol hasn't changed much in a while so as long as it's less than a few years old it'll work. New versions have more features though, obviously. > I tried the naive approach of using the "newest" versions of these files, as > measured by their modification times. This produced disastrous results. > The code compiled, but resulted in a program that failed in bizarre and > unpredictable ways, which strongly hinted at one or more silent segmentation > violations in the C code. I conjectured that this was the result of a > mismatched header or library file. Sure enough, the bizarre failures > disappeared when I used a different set of header and library files. Given you're using Ubuntu, why not just install postgresql-dev and use /usr/include/postgresql. Have a nice day, -- Martijn van Oosterhout <kleptog@xxxxxxxxx> http://svana.org/kleptog/ > Please line up in a tree and maintain the heap invariant while > boarding. Thank you for flying nlogn airlines.
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