[MDAL-Developer] Compiling with HDF5 1.10

[Paul Harwood]

Heho

I am compiling through a GH Action - which you can see for yourself here :

https://github.com/ViRGIS-Team/mdal-upm/blob/main/.github/workflows/winbuild2.yml

IMPORTANT NOTE - before you say. This action CURRENTLY has the
-DWITH_HDF5=OFF. That is so it works despite this issue. If it were not to
have this flag then one would see the error messages I mentioned.

Also :

- I know this is always a clean environment because - GH Action.
- This is VERY DEFINITELY compiling against a different version of HDF5
since I am building against the conda repo of GDAL 3.1.3 and not the
OSGEO4W repo. Sorry, I thought I made that clear in the title.

As far as I am aware the conda repo uses HDF5 1.10.6 and the OSGEO4W repo
seems to use 1.8.14 (or 1.8.11 in the choco repo).

I know this is NOT the MDAL supported version - but it is the current
"preferred" build for GDAL and - since the latest HDF5 version is 1.12,
using 1.8 does seem very backward. QGIS and MDAL probably need to grapple
with this at some point.

However - it seems that there are some compile-time changes needed after
1.8.14. I just wondered if anyone had already solved this?

In the short term - for us compiling without HDF is not a huge issue. And -
I guess we will have to get around to solving it sometime.

Br
P

On Wed, 21 Oct 2020 at 08:38, Peter Petrik <
peter.petrik at lutraconsulting.co.uk> wrote:

> Hi Paul,
>
> can you please post here your CMAKE command you use to generate the build
> system and the output of the command.
> Also make sure you start from the empty build directory when running it.
> This looks like you are linking against wrong version of hdf5 library.
>
> Peter
>
>
> On Tue, Oct 20, 2020 at 9:18 PM Paul Harwood <runette at gmail.com> wrote:
>
>> I am not sure this is a bug as such - so I thought I would try out the
>> new mailing list before raising as an issue.
>>
>> For various reasons - I am trying to compile MDAL against the current
>> conda version of GDAL - 3.1.3 - and the conda versions of the deps.
>>
>> It is mostly working - pace the testing issues I have raised. However I
>> get a fatal error (shown below) when compiling against HDF5 - which in this
>> case is v1.10.6.
>>
>> This appears to be a known issue - for instance here
>> https://github.com/conda-forge/gdal-feedstock/issues/25 and other
>> mentions. There seems to be a need for a compiler definition or flag and I
>> have tried playing with this - but nothing works.
>>
>> Does anyone have any idea of what I need to do? Or where to put the
>> compiler definition?
>>
>>
>> mdal_hdf5.obj : error LNK2001: unresolved external symbol H5T_C_S1_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hec2d.obj : error LNK2001: unresolved external symbol H5T_C_S1_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hdf5.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_INT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_flo2d.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_INT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hec2d.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_INT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hdf5.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_FLOAT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_flo2d.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_FLOAT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hec2d.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_FLOAT_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hdf5.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_DOUBLE_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_flo2d.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_DOUBLE_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> mdal_hdf5.obj : error LNK2001: unresolved external symbol
>> H5T_NATIVE_UINT8_g
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>> C:\Users\runes\Documents\GitHub\MDAL\build\mdal\Debug\mdal.dll : fatal
>> error LNK1120: 5 unresolved externals
>> [C:\Users\runes\Documents\GitHub\MDAL\build\mdal\mdal.vcxproj]
>>
>> _______________________________________________
>> MDAL-Developer mailing list
>> MDAL-Developer at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/mdal-developer
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mdal-developer/attachments/20201021/6728e841/attachment-0001.html>