[Qgis-user] Unable to open MrSID file in QGIS even if gdalinfo can read it

[Andrew Plowright]

I do indeed:

/usr/bin/gdalinfo
/bin/gdalinfo

I suppose that with the -DCMAKE_INSTALL_PREFIX:PATH=/usr parameter, this
means that the version of GDAL that I built was in /usr/bin/gdalinfo?

Is there any way to determine where QGIS is looking for GDAL? If that is
indeed the problem, is there a way to redirect QGIS towards a different
installation of GDAL?

Thanks!

On Wed, Sep 18, 2024 at 5:04 PM Richard Greenwood <
richard.greenwood at gmail.com> wrote:

> What do you get from
>     which -a gdalinfo
> You might have two versions installed.
>
> On Wed, Sep 18, 2024, 4:03 PM Andrew Plowright via QGIS-User <
> qgis-user at lists.osgeo.org> wrote:
>
>> Operating system: Linux Mint 22 Cinnamon
>> QGIS version: 3.34.4-Prizen
>> GDAL version: 3.10.0dev-1250e96221-dirt
>> MrSid DSDK version: 9.5.5.5244
>>
>> I have followed the instructions provided by the GDAL website
>> <https://gdal.org/en/latest/drivers/raster/mrsid.html> to build GDAL
>> from source in conjunction with the MrSid DSDK.
>>
>> My cmake command was as follows:
>>
>> cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr -DGDAL_ENABLE_DRIVER_JP2MRSID=ON
>> -DGDAL_USE_MRSID=ON
>> -DMRSID_ROOT=/opt/MrSID_DSDK-9.5.5.5244-rhel9.x86-64.gcc1131/Raster_DSDK
>> -DMRSID_LIBRARY=/opt/MrSID_DSDK-9.5.5.5244-rhel9.x86-64.gcc1131/Raster_DSDK/lib/libltidsdk.so
>> -DMRSID_INCLUDE_DIR=/opt/MrSID_DSDK-9.5.5.5244-rhel9.x86-64.gcc1131/Raster_DSDK/include
>> ..
>>
>> As instructed, I've also set the LD_LIBRARY_PATH variable to point
>> towards the DSDK's /lib/ path by adding the following to me /etc/profile
>> file:
>>
>> export
>> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/MrSID_DSDK-9.5.5.5244-rhel9.x86-64.gcc1131/Raster_DSDK/lib:/usr/lib
>>
>> Using the command line, I'm able to use gdalinfo to read a .sid file's
>> information. I even successfully used gdalwarp on it.
>>
>> However, QGIS will not accept this file format, returning a "not a valid
>> or recognized data source" error.
>>
>> It was my expectation that if MrSid was enabled within GDAL through the
>> command line, then QGIS would be able to read it too. Is there an
>> additional configuration that I'm missing?
>>
>> Thank you,
>> Andrew Plowright
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>
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