Creating and editing a filesystem seperate from compilation

[Ronny Nissengold]

Hi all,

By giving the linker the --preload-file flag with the appropriate folder I was able to successfully create and access the emscripten FS from cpp as I usually would.

However I would like to be able to create a FS separately from the compilation process. It just feels wrong.

I was able to use the file_packager.py to create a .data and .js file.

I tried running the filesystem.js before my main .js file in my custom index.html, and got an error:

Module.addRunDependency is not a function

Any idea what am I doing wrong? What is the best way to create and access FS in emscripten? Should I just preload in the linker?

Thanks!
Ronny

[Alon Zakai]

That error might be because we do not export all functions by default. Try with

emcc -sEXPORTED_RUNTIME_METHODS=addRunDependency

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[Ronny Nissengold]

Thanks!

But I am not trying to compile into a project a filesystem. I already did that successfully using the embind flags.

I am trying to work with a filesystem for a project separately from its compilation.

Is that at all possible?
I tried using the file_packager.py to no avail.

It generates a .data file with the FS and the .js file I don't know what to do with.

ב-יום שלישי, 18 ביולי 2023 בשעה 18:53:36 UTC+3, alon...@gmail.com כתב/ה:

[Alon Zakai]

The JS file that the file packager creates depends on the emscripten runtime code, so you do need to compile a program to use it. But perhaps you can compile a small one. Then you just combine the JS from that with the JS from the file packager and it should work. There are examples of this in the test suite I believe (search for FILE_PACKAGER in tests/*).

To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/aea0f159-cc08-4216-b7cc-0d78f5f0a37en%40googlegroups.com.

[Ronny Nissengold]

Thanks a lot!
I think I will stick to compiling an assets folder, it is not too bad.

ב-יום רביעי, 19 ביולי 2023 בשעה 20:05:32 UTC+3, alon...@gmail.com כתב/ה: