Re: narwhal and PGDLLIMPORT

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>

To: Amit Kapila <amit.kapila16@gmail.com>

Cc: pgsql-hackers <pgsql-hackers@postgresql.org>

Date: 2014-02-03T06:06:29Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

MinGW: Link with shell32.dll instead of shfolder.dll.
- 53566fc0940c 9.5.0 cited
Centralize getopt-related declarations in a new header file pg_getopt.h.
- 60ff2fdd9970 9.4.0 cited
Get rid of use of dlltool in Mingw builds.
- 846e91e0223c 9.4.0 cited
Export a few more symbols required for test_shm_mq module.
- 7d7eee8bb702 9.4.0 cited
Export set_latch_on_sigusr1 symbol for Windows.
- 708c529c7fde 9.4.0 cited
Use SHGetFolderPath instead of SHGetSpecialFolderPath to find the
- 889f03812916 8.1.0 cited

Amit Kapila <amit.kapila16@gmail.com> writes:
> Also as per below link, it seems that PGDLLIMPORT is required for
> exported global variables.
> http://msdn.microsoft.com/en-us/library/8fskxacy(v=vs.80).aspx

That was what we'd always assumed, but the fact that postgres_fdw has been
working for the last year (on everything except narwhal) puts the lie to
that as a blanket assumption.

So what I want to know now is how come it wasn't failing; because then
we might be able to exploit that to eliminate the need for the PGDLLIMPORT
cruft everywhere.  I've never been a fan of the fact that Windows insists
on its own private set of global symbol visibility rules.  If we can make
that build work more like other platforms, it'll be a step forward IMO.

			regards, tom lane