Re: narwhal and PGDLLIMPORT

Marco Atzeri <marco(dot)atzeri(at)gmail(dot)com> writes:
> On 16/02/2014 15:43, Andres Freund wrote:
>> Could either of you try whether compiling with the attached hack fixes
>> anything on cygwin?

> on cygwin32 bit it works, but it stops later on
> -------------------------------------------
> sl -lcrypto -lz -lreadline -lcrypt -o psql.exe
> tab-complete.o:tab-complete.c:(.text+0xa98): undefined reference to
> `rl_line_buffer'

> on cygwin 64bit, that I was not testing before,
> something is strange
> ------------------------------------------------------
> -lintl -lssl -lcrypto -lcrypt -lldap -lwsock32 -lws2_32 -o postgres
> postmaster/postmaster.o:postmaster.c:(.rdata$.refptr.environ[.refptr.environ]+0x0):
> undefined reference to `environ'

So what we currently know is that on cygwin, some of the core system
include files have been declspec'd, but others haven't; and headers
for third-party libraries like libxml and libreadline mostly haven't.

I'm starting to get the feeling that we're going to have to admit
defeat and not try to use --disable-auto-import on cygwin builds.
That platform is evidently not capable of supporting it.

We seem to be pretty nearly there on getting the MSVC and Mingw builds
to reliably complain about missing PGDLLIMPORTs, so maybe it's good
enough if those builds do it.

regards, tom lane