Re: How to add and use a static library within Postgres backend

On 27 November 2015 at 10:35, XiaoChuan Yu <xcyu(dot)se(at)gmail(dot)com> wrote:

> I'm doing some experimenting with the storage engine and I'd like to use a
> C++ static library (that has C headers). I only need this to build on
> Ubuntu 64-bit for now.
> How do I make postgres build with this library?
>

Build it separately. Link to it like any other library. Take a look at
configure.in for how libraries are discovered and the Makefile.am files for
how the header path and linker flags are defined.

What changes do I need to make to the build system files?
>

As above. Look at how PostgreSQL uses existing libraries. If the library
presents a pure C interface it should be just like everything else.

> I assume headers go in src/include but where do I put the library.a file?
>

Don't copy anything into PostgreSQL's source tree. Add new linker path and
include path entries so the build system knows how to find the files where
you originally compiled them.

--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services