Hello, Now I got workable dll thanks for your advice. > I think both the problems are related and the reason is that dsm_demo.dll > is not built properly. > Let us first try to solve your second problem, because I think if > that is solved, you will not face problem-1.
Thank you for kindness. I got the situation after successfully getting correct dll by using .def file after your advice. cl needs __declspec(dllexport) in the symbol definitions to reveal them externally, without using .def file. PostgreSQL platform(?) seems offering a macro PGDLLEXPORT for such use. I suppose this should be used in extension module dlls to expose symbols, like this, - void _PG_init(void); - Datum dsm_demo_create(PG_FUNCTION_ARGS); - Datum dsm_demo_read(PG_FUNCTION_ARGS); === + PGDLLEXPORT void _PG_init(void); + PGDLLEXPORT Datum dsm_demo_create(PG_FUNCTION_ARGS); + PGDLLEXPORT Datum dsm_demo_read(PG_FUNCTION_ARGS); # This hardly seems to be used commonly... I followed this instruction to make build environemnt, http://blog.2ndquadrant.com/compiling-postgresql-extensions-visual-studio-windows/ And the change above enables us to build this module without .def file. regards, -- Kyotaro Horiguchi NTT Open Source Software Center -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers