Re: Load C++ for functions? - Mailing list pgsql-general

From Elliot Chance
Subject Re: Load C++ for functions?
Date
Msg-id BE2BB6D8-2E68-472C-9D70-F4BA80AF0E62@gmail.com
Whole thread Raw
In response to Re: Load C++ for functions?  (Dmitriy Igrishin <dmitigr@gmail.com>)
Responses Re: Load C++ for functions?  (Craig Ringer <craig@postnewspapers.com.au>)
List pgsql-general
Cheers! It works.

On 24/12/2010, at 11:13 PM, Dmitriy Igrishin wrote:

Hey Elliot,

See http://www.postgresql.org/docs/9.0/static/extend-cpp.html

Probably compiling with -fno-exceptions solve you problem.

2010/12/24 Elliot Chance <elliotchance@gmail.com>
I'm trying to link up a C++ project with postgres functions, the following code compiles (as C++):

extern "C" {
       #include <postgres.h>
       #include <fmgr.h>

       #ifdef PG_MODULE_MAGIC
       PG_MODULE_MAGIC;
       #endif
};

extern "C" {
       PG_FUNCTION_INFO_V1(pg_xversion);
};
extern "C" Datum pg_xversion(PG_FUNCTION_ARGS)
{
       PG_RETURN_NULL();
}

But the CREATE FUNCTION gives the error:
ERROR:  could not load library "/storage/Scripts/pgx/pgx.so": /storage/Scripts/pgx/pgx.so: undefined symbol: __gxx_personality_v0

Postgres is no doubt trying to load a C++ linked library as C - is there a way to fix this?
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// Dmitriy.



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