Project

Profile

Help

Forums » Saxon/C Help and Discussions »

Problems to use self built Python extension on Windows: ImportError: DLL load failed while importing saxonche

Added by Martin Honnen about 1 year ago

I have tried to build the SaxonC 12.0 HE extension on Windows and I think the extension finally has been built fine.

Now on trying to use it, however, it doesn't seem to find a library:

C:\Program Files\Saxonica\SaxonCHE12.0\pypi>dir
..

 Verzeichnis von C:\Program Files\Saxonica\SaxonCHE12.0\pypi

01/26/2023  11:11 AM    <DIR>          .
01/14/2023  07:19 AM    <DIR>          ..
01/26/2023  10:58 AM    <DIR>          build
01/26/2023  11:03 AM            18,432 nodekind.cp39-win_amd64.pyd
01/26/2023  11:11 AM               563 parse_ietf_date_test1.py
01/14/2023  07:19 AM               160 pyproject.toml
01/26/2023  10:50 AM    <DIR>          python_saxon
01/14/2023  07:19 AM             6,787 README.md
01/14/2023  07:19 AM                25 requirements.txt
01/14/2023  07:19 AM    <DIR>          samples
01/26/2023  11:03 AM           517,632 saxonche.cp39-win_amd64.pyd
01/26/2023  11:02 AM             3,082 setup.py
01/14/2023  07:19 AM            58,998 test_saxonc.py
01/14/2023  07:19 AM             4,095 test_saxon_schema.py
01/14/2023  07:19 AM               533 tox.ini
              10 Datei(en),        610,307 Bytes
               5 Verzeichnis(se), 505,411,121,152 Bytes frei

C:\Program Files\Saxonica\SaxonCHE12.0\pypi>py
Python 3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from saxonche import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: DLL load failed while importing saxonche: Das angegebene Modul wurde nicht gefunden.

My environment PATH contains C:\Program Files\Saxonica\SaxonCHE12.0\libs\win and the SaxonC command samples and C++ samples run fine and find any dlls.

What else do I have to set to make sure the Python module finds the (I suppose) C/C++ DLLs?


Replies (2)

RE: Problems to use self built Python extension on Windows: ImportError: DLL load failed while importing saxonche - Added by Martin Honnen about 1 year ago

I have now tried to built and use the Python extension under WSL Ubuntu but I get a similar error

mh@LibertyDell:~/libsaxon-HEC-linux-v12.0/pypi$ python3
Python 3.10.6 (main, Nov 14 2022, 16:10:14) [GCC 11.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from saxonche import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /home/mh/libsaxon-HEC-linux-v12.0/pypi/saxonche.cpython-310-x86_64-linux-gnu.so: undefined symbol: j_callTemplateReturningValue

I am kind of lost which setting is missing.

RE: Problems to use self built Python extension on Windows: ImportError: DLL load failed while importing saxonche - Added by O'Neil Delpratt about 1 year ago

I have also reproduced the same error on linux. Something strange going on here. I will create a bug issue for this problem.

    (1-2/2)

    Please register to reply