make the CMake_WASM example work again

[mhaberler]

this works for me including in-browser C-level debugging with the modified lgfx::Panel_sdl API

unsure if this is the right way to do it - grateful for a review

[tobozo]

thanks 👍

I will try to add a github workflow to test the WASM example and prevent code erosion in the future, I'm a complete noob with WASM too 🤭 and this is the perfect occasion to learn more

can you confirm these are the steps to follow:

• git clone https://github.com/emscripten-core/emsdk.git
• cd emsdk
• ./emsdk install latest # any specific version?
• ./emsdk activate latest
• source ./emsdk_env.sh
• cd examples_for_PC/CMake_WASM
• mkdir build
• cd build
• emcmake cmake ..
• emmake make
• publish html/js/wasm on github pages

[mhaberler]

yes, that is the steps I followed - no specific version, just latest

have a look at the notes in the README - very useful tutorial referenced there
install Chrome Canary and the extension as outlined, then try debugging in Canary

[tobozo]

install Chrome Canary and the extension as outlined

that's for local testing, right? while it makes sense to mention it in the readme, the github workflow probably won't need that as the assets will be published on github pages

[mhaberler]

nope, local testing only - nothing todo with this repo

[tobozo]

puslishing to github-pages seems to work on my fork

[mhaberler]

excellent!

[mhaberler]

hm, try this with Canary: https://static.mah.priv.at/public/lovyan.html
I can source-debug that:

I cannot with yours: https://tobozo.github.io/LovyanGFX/WASM/ , unclear why:

I guess this is the filepath mapping issue mentioned in the tutorial

anyway good to go!

[tobozo]

oh the workflow only published the index.html file, more files are required maybe?

I try to keep my machine Chrome-free so I didn't test with the extension 😉

[mhaberler]

no I dont think so, I just pushed index.html to my server

it seems SINGLE_FILE=1 wraps all assets including DWARF info into the wasm blob
could be an artefact of running a remote builder causing path name divergence

I have given up resistance on chrome ;)