Quinlan Pfiffer <quinlan@xxxxxxxxxxxx> writes: > I'm trying to build a custom background worker for 9.3 in C++. > Recompiling for -fPIC (as it says to) correctly builds the shared library, > but then when I try to run Postgres with my .so file being loaded I get > this: > https://gist.github.com/qpfiffer/e59c9260b687a23e2743 Is it really necessary to make us go visit some random website for a two-line error log? For the archives (since I bet the above link will be 404 soon), the failure looked like this: 2014-07-03 12:08:42 PDT FATAL: could not load library "/usr/lib/postgresql/9.3/lib/pg_webrtc.so": /usr/lib/postgresql/9.3/lib/pg_webrtc.so: undefined symbol: _Z30BackgroundWorkerUnblockSignalsv It looks to me like you need extern "C" { ... } around the Postgres header files you're importing, so that the C++ compiler won't think it should mangle function names declared therein. regards, tom lane
