[gdal-dev] Using GDAL with opencv in C++ there is errors under windows

[Raivo Rebane]

Hi

There was problem in libraries.

VIsual Studio seeks firstly PostGIS libraries what is older ones

Now I set Firstly seek from separately installed GDAL libraries.

But conflict in twice installed PROJ packages exist.

So, I cant use PROJ package functions.

Can anybody helps me ?

Regards

Raivo

On 07.03.23 11:28, Raivo Rebane wrote:
> I use Visual Studio and there is defined for linking following libraries:
>
> gdal.lib
> opencv_calib3d460d.lib
> opencv_core460d.lib
> opencv_dnn460d.lib
> opencv_features2d460d.lib
> opencv_flann460d.lib
> opencv_gapi460d.lib
> opencv_highgui460d.lib
> opencv_imgcodecs460d.lib
> opencv_imgproc460d.lib
> opencv_ml460d.lib
> opencv_objdetect460d.lib
> opencv_photo460d.lib
> opencv_stitching460d.lib
> opencv_video460d.lib
> opencv_videoio460d.lib
>
> as I use OpenCV.
>
> What library is neede for linker ?
>
> As a matter of fact this source compiles, links and runs without 
> problems day after yesterday
>
> Regards
>
> Raivo
>
>
> On 07.03.23 10:46, Mateusz Loskot wrote:
>> On Tue, 7 Mar 2023 at 09:32, Raivo Rebane <raivo at r-systems.ee> wrote:
>>> I minimized the program :
>>>
>>> #include <gdal.h>
>>> #include <gdal_priv.h>
>>> #include <iostream>
>>> #include <conio.h>
>>>
>>> int main()
>>> {
>>>       GDALAllRegister();
>>>       GDALDataset* dataset =
>>> static_cast<GDALDataset*>(GDALOpen("634632_2012_tava.tiff", 
>>> GA_ReadOnly));
>>>       GDALClose(dataset);
>>>
>>>       return 0;
>>> }
>>>
>> The errors like
>>    LNK2001 unresolved external symbol
>> typically mean a program is not being linked against required libraries.
>>
>> You need to refer to documentation of the compilation toolset you are 
>> using
>> in order to learn how to configure build of your program properly,
>> how to pass gdal.lib to its linker, etc.
>> If you are using CMake, you can follow this recommendation
>> https://gdal.org/development/cmake.html
>>
>> Best regards,