Re: problem with msvc linker - cannot build orafce

On 25 November 2015 at 13:36, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Craig Ringer <craig(at)2ndquadrant(dot)com> writes:
> > Actually, if __declspec(dllexport) or a .DEF entry was added in, say,
> > 9.4.5, you could probably just:
>
> > #if PG_VERSION_NUM < 90405
> > extern int* log_min_messages_p;
> > #define log_min_messages (*log_min_messages_p)
> > #endif
>
> > after including all PostgreSQL headers. It won't work for inline
> functions
> > defined in PostgreSQL headers, but should otherwise be OK I think.
>
> Some of these workarounds look like they would break if we add the missing
> PGDLLIMPORT in future releases. That would be nasty :-(. Am I misreading
> it?
>
>
I don't think they will, but without testing and more digging I can't be
sure. If marking the variable __declspec(dllexport) causes its import table
entry to be omitted then yes, that'd break things.

I'll try to dig out my Windows VM and prep a few tests once I've delivered
on the promised pglogical downstream.

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