• Add version for libpd;
• Add version for PureData;
• Add version for Emscripten;
• Check the version of pd2wasm and give some warning possible incompatibilities;

Hi,
I was just trying to use pd4web with p5js since 2 weeks with some results (https://jyg.github.io/carto_p5/webpatch/index.html, source code here https://github.com/jyg/carto_p5) and I just saw that you put an example in your readme file ("interaction with p5js").
Did you put any code somewhere related to this ?
I would be very interested !
Thanks and congrats for your work. It's a game changer for pd web-integration !

after changing the Patches/index.pd, some special steps need to be taken in order for the patch to actually show up in the webpage.

as per pure-data/pure-data#2258 (comment), these steps should be something like:

emcmake cmake . -B build
emmake make -C build -j 8

however, it seems that this is not enough (as in: reloading the page and restarting the patch will still use the old patch)

afaict, i also need to change "something" in the source-code and re-compile (since i was working on Pd itself, something like build/libpd/pure-data/src/x_time.c would do the trick).

as assume this is because webpatch/pd4web.js (which i guess contains both the patch and the Pd wasm code) is only rebuilt if the .c sources change, but not if only the .pd file changes.

i tried building pd4web within an emscripten/emsdk Docker image (with today's latest aka 3.1.57 aka 8b7c9e9e95f3), which is based on Ubuntu/Jammy (22.04), which only comes with CMake-3.22

however, the minimum required CMake version is 3.25:

i wonder what motivates this minimum required version?

lowering the required version to 3.22 with something like this

sed -e '1s/VERSION 3.25/VERSION 3.22/' -i CMakeLists.txt

allowed me to build the the project just fine.

in order to allow for maximum backwards compatibility, I would suggest to use the actually required minimum version (based on which features of CMake you need), rather than your currently used version.