Re: narwhal and PGDLLIMPORT

On Sun, Feb 9, 2014 at 4:04 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Hiroshi Inoue <inoue@tpf.co.jp> writes:
>> Though I'm not a MINGW expert at all, I know dllwrap is a deprecated
>> tool and dlltool is almost a deprecated tool. Cygwin port is removing
>> the use of dllwrap and dlltool now. Isn't it better for MINGW port to
>> follow it?
>
> Only way to make that happen is to prepare and test a patch ...
>
> In the meantime, here's a short patch trying the "#define extern" approach.
> Anyone want to try this on a Windows machine or two?

There are quite a few warnings and errors in build:
Most prominent are:
1>  reloptions.c
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\math.h(88): warning C4141: 'dllexport' : used more
than once
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\math.h(460): warning C4141: 'dllexport' : used more
than once
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\float.h(180): warning C4141: 'dllexport' : used more
than once
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\math.h(88): warning C4141: 'dllexport' : used more
than once
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\math.h(460): warning C4141: 'dllexport' : used more
than once
1>c:\Program Files (x86)\Microsoft Visual Studio
10.0\VC\include\float.h(180): warning C4141: 'dllexport' : used more
than once

There are few others as well:

1>src\backend\utils\misc\guc-file.c(736): error C2375: 'GUC_yylex' :
redefinition; different linkage
1>          src\backend\utils\misc\guc-file.l(49) : see declaration of
'GUC_yylex'

1>c:\Program Files (x86)\Microsoft
SDKs\Windows\v7.0A\include\winioctl.h(39): error C2370:
'GUID_DEVINTERFACE_DISK' : redefinition; different storage class
1>          c:\Program Files (x86)\Microsoft
SDKs\Windows\v7.0A\include\winioctl.h(39) : see declaration of
'GUID_DEVINTERFACE_DISK'


Attached find the build output of postgres.


With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com