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swig --version doesn't work in all versions of swig; -version should be used instead #4756
Description
Did code inspection and it looks like setup.py relies on swig --version returning something meaningful (see the linked code below).
--version isn't implemented on all versions of swig (it seems that it's only technically implemented on the MacOS version of the package).
FreeBSD
% swig --version
Unable to find option or file '--version', Use 'swig -help' for more information.
% swig -version
SWIG Version 4.2.1
Compiled with c++ [amd64-portbld-freebsd14.3]
Configured options: +pcre
Please see https://www.swig.org for reporting bugs and further information
Linux
% lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
% swig --version
Unable to find option or file '--version', Use 'swig -help' for more information.
% swig -version
SWIG Version 4.1.0
Compiled with g++ [arm-unknown-linux-gnueabihf]
Configured options: +pcre
Please see https://www.swig.org for reporting bugs and further information
macOS
% swig --version
SWIG Version 4.3.1
Compiled with clang++ [aarch64-apple-darwin24.2.0]
Configured options: +pcre
Please see https://www.swig.org for reporting bugs and further information
Line 729 in 5b6acfb
Activity
Arthur-Barreto commentedon Oct 29, 2025
We’re running into the same deprecation warnings on Python 3.12:
DeprecationWarning: builtin type SwigPyPacked has no module attribute
DeprecationWarning: builtin type SwigPyObject has no module attribute
DeprecationWarning: builtin type swigvarlink has no module attribute
They show up as soon as we import fitz, both in our unit tests and in a container image we ship. Right now we’re silencing them via filterwarnings, but just wanted to +1 that the problem affects us too. Happy to retest when a fix lands.
setup.py: use swig -version instead of swig --version
julian-smith-artifex-com commentedon Oct 30, 2025
We keep issues open until they are fixed in a release, so reopening.
ngie-eign commentedon Oct 31, 2025
Sounds good - thanks!
julian-smith-artifex-com commentedon Nov 5, 2025
Fixed in pymupdf-1.26.6.