Re: [Linux-gpib-general] Python bindings

[Matthias G. <m_g...@wi...>]

Am 30.09.25 um 15:25 schrieb Matthias Geiger:
>
>
> this is because the python3 build module needs to be installed.
> With that it just fails because the gpib/ib.h header is not present:
>
>
> * Building wheel from sdist
> * Creating venv isolated environment...
> * Installing packages in isolated environment... (setuptools>=61)
> * Getting build dependencies for wheel...
> /tmp/build-env-qiaffj9e/lib/python3.12/site-packages/setuptools/config/pyprojecttoml.py:72: 
> _ExperimentalConfiguration: `[tool.setuptools.ext-modules]` in 
> `pyproject.toml` is still *experimental* and likely to cha
> nge in future releases.
>   config = read_configuration(filepath, True, ignore_option_errors, dist)
> running egg_info
> writing gpib.egg-info/PKG-INFO
> writing dependency_links to gpib.egg-info/dependency_links.txt
> writing top-level names to gpib.egg-info/top_level.txt
> reading manifest file 'gpib.egg-info/SOURCES.txt'
> writing manifest file 'gpib.egg-info/SOURCES.txt'
> * Building wheel...
> /tmp/build-env-qiaffj9e/lib/python3.12/site-packages/setuptools/config/pyprojecttoml.py:72: 
> _ExperimentalConfiguration: `[tool.setuptools.ext-modules]` in 
> `pyproject.toml` is still *experimental* and likely to cha
> nge in future releases.
>   config = read_configuration(filepath, True, ignore_option_errors, dist)
> running bdist_wheel
> running build
> running build_py
> creating build/lib.linux-x86_64-cpython-312
> copying Gpib.py -> build/lib.linux-x86_64-cpython-312
> running egg_info
> writing gpib.egg-info/PKG-INFO
> writing dependency_links to gpib.egg-info/dependency_links.txt
> writing top-level names to gpib.egg-info/top_level.txt
> reading manifest file 'gpib.egg-info/SOURCES.txt'
> writing manifest file 'gpib.egg-info/SOURCES.txt'
> running build_ext
> building 'gpib' extension
> creating build/temp.linux-x86_64-cpython-312
> x86_64-linux-gnu-gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g 
> -O2 -Wall -fPIC -I../../include -I/tmp/build-env-qiaffj9e/include 
> -I/usr/include/python3.12 -c gpibinter.c -o 
> build/temp.linux-x86_64-cpython-31
> 2/gpibinter.o
> gpibinter.c:12:10: fatal error: gpib/ib.h: Datei oder Verzeichnis 
> nicht gefunden
>    12 | #include <gpib/ib.h>
>       |          ^~~~~~~~~~~
> compilation terminated.
> error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
>
> ERROR Backend subprocess exited when trying to invoke build_wheel
> make[3]: [Makefile:494: build] Fehler 1 (ignoriert)
>
> From what I understand, this would require the header to a) either be 
> present locally *in the same* directory, or b) to be included via 
> /usr/share/include.
> Since the latter is IMO not feasible I will look into getting a) to work.
>
> best,
>
> Matthias Geiger
>
>
After hacking some more on my source tree:
a) does not work as cc does not know against which library to link.
b) would be indeed the way to go; however this would require splitting 
the python bindings in a separate repo, so they can link against the C 
libgpib.
I'd be willing to write patches for this if you agree to go ahead with 
this. This would make python-gpib futureproof and ease distribution, 
e.g. on pypi.
In my Debian packaging I hacked around setup.py, but it's kinda ugly and 
it will break sooner or later.

-- 
Freundliche Grüsse / Best regards

Matthias Geiger
__________________________________________________________________
Matthias Geiger
Werkstudent
Forschung & Entwicklung/Research & Development

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