[GRASS5] Re: dbmi driver

Huidae Cho grass4u at gmail.com
Sat Oct 23 05:27:42 EDT 2004


I forgot something. It causes the following error when I run ./tour in
the g51test-12 dataset:

v.db.connect map=multi.....
  dbmi: db_open_database() not implemented
  WARNING: Cannot open database '..../dbf'

Thanks.
Huidae Cho

On Sat, 23 Oct 2004 04:21:29 -0500, Huidae Cho <grass4u at gmail.com> wrote:
> Hi developers,
> 
> I just installed grass 5.7 on cygwin and found dbmi drivers don't work
> because db_driver_* functions were defined both in
> libgrass_dbstubs.dll and each driver.
> 
> For example,
> db_driver_open_database in libgrass_dbstubs.dll:  memory address: 0x5131f0
> db_driver_open_database in dbf.exe:  memory address: 0x401310
> 
> when a user calls the dbf driver, what the driver is supposed to do is
> calling 0x401310. However, it calls 0x5131f0 because both the driver
> and libgrass_dbmidriver.dll are compiled with libgrass_dbstubs.dll.
> 
> dbf driver (dbf.exe) -> db_driver (libgrass_dbmidriver.dll) ->
> db_driver_open_database (libgrass_dbmidriver.dll ->
> libgrass_dbstubs.dll, not -> dbf.exe)
> 
> I'm not sure if i explained correctly, but is this a problem only in cygwin?
> 
> Any comment would be helpful.
> 
> Thanks,
> Huidae Cho
>




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