On Sun, Nov 27, 2005 at 06:30:59PM -0300, Alvaro Herrera wrote: > Martijn van Oosterhout wrote: > > > Attached is a patch which applies this filtering to the backend and has > > the same results as linking with --as-needed. I basically took the > > filter list of libpq and altered it as follows: > > > > libs removed: -lnsl -lresolv > > libs added: -ldl -lm > > Hmm, we don't need -ldl? How do we implement OPEN etc if not without > dlopen()? [looks around] I see this is with pg_dlopen which in turn is > dlopen in Linux and others. Did you try contrib's regression test? > plperl's?
??? I added -ldl, I didn't remove it. Note, it uses $(filter) which removes things not in the list. Maybe you're thinking of $(filter-out)? None of this affects contrib or plperl because they use completely different link lines. I've been thinking about -lnsl and -lresolv and it occurred to me that maybe on some platforms they are needed. However, on Linux they are 100% redundant. There -lnsl provides functions for NIS and YP and -lresolv provides functions for making your own DNS packets, neither of which PostgreSQL does. Unfortunatly the autoconf test doesn't look for a particular function it simply includes the lib if it is present. Does anyone remember what required functions are provided by these libs? Have a nice day, -- Martijn van Oosterhout <firstname.lastname@example.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
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