On 04/04/2012 02:55 AM, Mohd. Bilal Husain wrote:
Passed a dumb sample rust bitcode to emscripten, got js functions#.
Realized I need to run on core modules too for printing simple hello
world. Took io from libcore, decimated code to avoid few build errors,
emcc throws error
Unclear type in struct
Anyways, need to figure out how to build native modules and core lib,
std lib; and how to map these modules to imports in a sample hello-world.
I would start with test cases that do not use core or std at all, like:
#[no_core];
fn main() { log(0, "hello, world"); }
Build that with --emit-llvm -S and build it with emscripten. After
enough fiddling it should complain about not being able to find
`rust_start` (the entry point to the rust runtime). Then you write a
`rust_start` function and keep repeating until you've rewritten the
runtime in javascript.
FWIW, last time I tried to run our bitcode through emscripten I had to
use 32-bit code because emscripten had some bugs related to 64-bit code.
-Brian
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