Emscripten troubles "GET /installHook.js.map HTTP/1.1" 404 -"

[stanybebe]

Hey there sweet people! I am having trouble with this tutorial here :
https://openframeworks.cc/setup/emscripten/

i have downloaded the nightly builds v0.12.0 and also I am using the newest build of emscripten SDK version '3.1.72'

also
node-20.18.0-64bit
python-3.9.2-64bit

and I can build my project and it creates the em folder but on load i keep getting this error i cannot find anything about online which i guess was supposed to have been generated:
"GET /installHook.js.map HTTP/1.1" 404 -
"GET /index.wasm.map HTTP/1.1" 404 -

the headers in emscripten make file "CXX = -gsource-map" only create the
index.wasm.map. Any help would be greatly appreciated!

[ofTheo]

@Jonathhhan - could you take a look at this?
Both 0.12.0 and nightly are failing for me with the latest Emscripten version.

[Jonathhhan]

@ofTheo I will take a look and give it a try (but cannot promise to solve it). Some months ago I had a similar issue and I could not solve it, too. It was also compiling, but not running (not sure about the exact error anymore). Thats because of my lack in knowledge about web technologies... At least I will try and post the error message I get.

[stanybebe]

Is there a build and emscripten version we know works?

[Jonathhhan]

@stanybebe yes (almost). 3.1.50 and OF Nightly should work: https://forum.openframeworks.cc/t/emscripten-on-osx-not-working-for-me/28911/13

[stanybebe]

hm now getting a new error " GLctx is not defined" on build

Uncaught TypeError: GLctx is undefined
_glGetString http://localhost:6931/index.js:1
callRuntimeCallbacks http://localhost:6931/index.js:1
initRuntime http://localhost:6931/index.js:1
doRun http://localhost:6931/index.js:1
run http://localhost:6931/index.js:1

[stanybebe]

really struggling with this one, no matter what emscripten flags or version and making sure i remove all previous objs, i cannot get past Uncaught TypeError: GLctx is undefined, seems like in the wasm its pointing to

ofGLESVersionFromGL() http://localhost:6931/index.wasm:365332
    ofTexture::ofTexture() http://localhost:6931/index.wasm:301849

how should my main.h look for emscripten?

[ofTheo]

Just to cross post this.
These are all the issues in getting the nightly to run:

for the libfmt issue - remove:
of_v20241205_osx_release/libs/fmt/lib/emscripten fixes this

But I get errors relating to wasm after that so need to install 3.1.73 ( to match apothecary ):

./emsdk install 3.1.73
./emsdk activate 3.1.73

Then stuff gets built now in a bin/em/ folder so that breaks running it following the normal methods.

So you have to run like:
emrun bin/em/3DPrimitivesExample/index.html

Then we get the gl context runtime error.

[dimitre]

it seems the same function addressed in #8212

[Jonathhhan]

@ofTheo I tried the latest OF / Emscripten and it is failing for me, too (same error as yours).