Re: Problem Building Cygwin PostgreSQL

On Thu, Sep 21, 2000 at 11:55:38AM -0400, Jason Tishler wrote:
> I am attempting to build PostgreSQL 7.0.2 on a stock Cygwin 1.1.4
> distribution. When building plpgsql.dll, I get the following error:
>
> dllwrap -o plpgsql.dll --dllname plpgsql.dll --def plpgsql.def \
> pl_parse.o pl_han dler.o pl_comp.o pl_exec.o pl_funcs.o \
> ../../../utils/dllinit.o -L/usr/local/lib -L/usr/local/lib \
> -L../../../backend -lpostgres -lcygipc -lcygwin -lcrypt -lkernel32
> pl_exec.o(.text+0x1e56):pl_exec.c: undefined reference to `fmgr_pl_finfo'
> pl_exec.o(.text+0x32a1):pl_exec.c: undefined reference to `fmgr_pl_finfo'
> pl_exec.o(.text+0x32bd):pl_exec.c: undefined reference to `fmgr_pl_finfo'
> collect2: ld returned 1 exit status

After much head banging and web surfing, I finally fixed the plpgsql.dll
build problem. I was pointed in the right direction by Joost Kraaijeveld.
The solution was to change Gen_fmgrtab.sh.in, which generates fmgr.h,
as follows:

diff Gen_fmgrtab.sh.in.orig Gen_fmgrtab.sh.in
139c139,144
< extern FmgrInfo *fmgr_pl_finfo;
---
> #ifdef BUILDING_DLL
> #define DLL_INTERFACE __declspec(dllexport)
> #else
> #define DLL_INTERFACE __declspec(dllimport)
> #endif
> extern DLL_INTERFACE FmgrInfo *fmgr_pl_finfo;

fmgr_pl_finfo is data and not a function, so I guess that it needs to be
explicitly imported/exported via __declspec(dllimport)/__declspec(dllexport),
respectively.

Does anyone know whether or not older Cygwin versions of binutils
automatically exported data items?

Thanks,
Jason

--
Jason Tishler
Director, Software Engineering Phone: +1 (732) 264-8770 x235
Dot Hill Systems Corporation Fax: +1 (732) 264-8798
82 Bethany Road, Suite 7 Email: Jason(dot)Tishler(at)dothill(dot)com
Hazlet, NJ 07730 USA WWW: http://www.dothill.com