Andres Freund <and...@anarazel.de> writes: > On 2016-10-05 14:01:05 -0400, Tom Lane wrote: >> configure USE_UNNAMED_POSIX_SEMAPHORES=1 --disable-cassert >> --disable-spinlocks --disable-atomics
> Pretty independent from the complaint at hand, but if I just do that I get > undefined reference to symbol 'sem_post@@GLIBC_2.2.5' > I needed to add -pthread -lrt to LDFLAGS to make it work. Yeah, on my machine man sem_init specifies "Link with -lrt or -pthread". But I see -lrt getting added into the backend link anyway, presumably as a result of one of these configure calls: AC_SEARCH_LIBS(shm_open, rt) AC_SEARCH_LIBS(shm_unlink, rt) AC_SEARCH_LIBS(sched_yield, rt) If we were to try to support USE_UNNAMED_POSIX_SEMAPHORES as default (which is where I'm thinking about going) we'd have to tweak configure to check sem_init similarly. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers