Re: [Rdkit-discuss] Building RDKit on Windows. Only static libraries produced? How to make the Python wrapper work?

[Ernst-Georg S. <pg...@tu...>]

Am 10.05.2023 um 16:32 schrieb pgchem pgchem:
> I'm currently trying to build RDKit 2023_03_1 on Windows 11 with Visual 
> Studio 2022 Community. The building itself works:
> - No errors during the build
> - I get a working extension against PostgreSQL 15.2
> - I get working static libraries for Visual Studio (RDGeneral.lib etc.)
> - I get a rdkit package for Python 3.10
> BUT this does not work:
> from rdkit import Chem
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "C:\RDKit\lib\site-packages\rdkit\__init__.py", line 6, in <module>
> from . import rdBase
> ImportError: DLL load failed while importing rdBase: The specified 
> module could not be found.

Hello again,

I have managed to build the shared objects also by now. I had to carve 
this out of the azure pipelines, apparently it only works correctly if 
you build like there, i.e. using cmake instead of MSBuild directly.

E.g.

C:\CMake\bin\cmake --build . --config=Release --target install

instead of

& "C:\Program Files\Microsoft Visual 
Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe" 
/p:Configuration=Release INSTALL.vcxproj (as the RDKit Book says)

But the rdkit Python package still throws abovementioned error. I did 
the same build on Ubuntu, and everything worked out of the box. I have 
also checked various "solutions" from the WWW but to no avail. I cannot 
see any unresolved dependencies for rdBase.pyd. Any helpful suggestions 
or pointers are appreciated.

best regards

Ernst-Georg