FFIGen Pad - Next Steps?

[Aayush Kashyap]

Hi everyone!

I just completed compiling a few C libraries to WASM and am currently exploring WASMGC to compile some Dart too. I wanted to ask what the next step should be?

Also to extend my understanding of the project, is libclang needed internally by dart-sdk to generate AST, and hence its need? If that is the case, are there any more C dependencies that I need to incorporate too?

Regards,

Aayush

[Daco Harkes]

Hi Aayush,

We haven't looked at the challenges compiling libclang to WASM. That is for you to explore! Let us know what you find out!

A first step is to start with a simple C program that interacts with file IO through WASI.

And then try compiling the whole of libclang from source to WASM with WASI.

Kind regards,

 •  Daco Harkes
 •  Software Engineer
 •  dacoh...@google.com 

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[Aayush Kashyap]

I was successful in compiling a piece of C code to WASM with fileoperations. I also tried compiling Dart code to WASM via WASMGC. Next up, I wrote some basic C code to explore how libclang works. I am currently exploring ways to compile libclang to WASM. With the deadline for submission approaching, is it a good time to submit a draft proposal?Also, what all points should I include in my proposal and in how much detail? 

[Daco Harkes]

Hi Aayush,

That's great!

Another thing for you to try is to make the compiled Dart code to WASMGC work together with the C code compiled to WASM+WASI.

We've added some extra documentation to https://github.com/dart-lang/sdk/wiki/Dart-GSoC-2024-Project-Ideas#idea-ffigenpad

I am currently exploring ways to compile libclang to WASM.

Cool!

 

With the deadline for submission approaching, is it a good time to submit a draft proposal?Also, what all points should I include in my proposal and in how much detail? 

Yes, please make a Google doc and give +Prerak Mann +Jackson Gardner and me comment access.

Kind regards,

 •  Daco Harkes
 •  Software Engineer
 •  dacoh...@google.com 

To view this discussion on the web visit https://groups.google.com/d/msgid/dart-gsoc/668471c2-b708-47fe-a715-5ee41d060edan%40googlegroups.com.

[Kingsley Umenze]

Good day, i have successfully compiled C code to WASM and i have been able to interact  with the C method in dart code via JS  i want to know if this is a valid route.

[Daco Harkes]

Hi Kingsley,

No, you should interact with dart:ffi and dart compile wasm, not via JS interop.

Kind regards,

 •  Daco Harkes
 •  Software Engineer
 •  dacoh...@google.com 

To view this discussion on the web visit https://groups.google.com/d/msgid/dart-gsoc/874ab8f3-8d16-407e-80ea-a2bf519604b0n%40googlegroups.com.

[Aayush Kashyap]

Hi Daco!

I have sent the initial proposal to everyone mentioned. Please have a look!

Regards,

Aayush Kashyap

[Daco Harkes]

Hi Aayush,

The proposal looks good.

It could be expanded with some learnings from the getting started projects.

Also, could you add a link to a private GitHub repo with your sample code so that we can take a look?

Kind regards,

 •  Daco Harkes
 •  Software Engineer
 •  dacoh...@google.com 

To view this discussion on the web visit https://groups.google.com/d/msgid/dart-gsoc/7aafc29b-e53e-4ab1-a6fb-90fffef148ean%40googlegroups.com.

[Aayush Kashyap]

Hi,

I actually haven;t been able to figure out how to initialize the symbols into the dart code. On native platforms it would have been done with DynamicLibrary.(process/open/executable) calls but how do I initialize them on WASM Platform?

Regards,

Aayush