Re: develop a extension with cpp?

On Tue, Nov 02, 2021 at 01:31:22AM +0000, huangning290(at)yahoo(dot)com wrote:
> Hi
> if i can develop a extension with cpp language?
> regards!

Generally, like in any other language. Write files, use calls
and APIs available inside Postgres, compile it and install to
postgres directory.

The only one I know of as of now is https://github.com/postgrespro/rusmorph

And it's not an example of a well-documented extension, unfortu-
nately.

Hoewever, it works. It's possible that you can find some more
examples on pgxn.org

Also, probably you would need to compile it with

USE_PGXS=1 make with_llvm=no

While the USE_PGXS=1 is a standard way to compile extension out
of the postgres source tree, the with_llvm=no is a workaround of
some bug in the llvm-7, that doesn't allow JIT compilation of C++
code.