WASM build errors

[GabrielleAkers]

I'm trying to follow the steps here to build for webassembly but running into errors in the build.

I built openssl and poco with the emsdk and modified the config to point to the correct locations since the suggested flag --with-wasm-openssl doesn't exist. After that modification the configuration step seems to work fine, but then when I run make to build I get the following errors:

Originally I tried to modify the signature of the extern function from syncfs() to just sync() since it looks like it's being used the way sync is supposed to be, but then I ran into more linking errors farther into the process.

Is there an updated guide for building to wasm that can be shared? Or maybe there is a different version of the emsdk I need to use?

[GabrielleAkers]

On revisiting this I realized the online version of CraftOS is running many versions behind the master branch. I downgraded and tried to build version 2.3 using old emsdk, poco and openssl and still have build errors (albeit different ones).

I will try to work on fixes for the errors I'm encountering and submit a fork PR once I have a working build.

[MCJack123]

It looks like one of the functions defined to be exported to JS now collides with a Linux system call of the same name - changing the name of that should fix this error. However, you're correct in noticing that the WASM version hasn't been maintained for a while, partially due to an old bug in Emscripten and/or WASM engines that caused absurd memory usage at startup. It's probably fixed now, but I haven't taken a look at it in a while.