Suppose I have a simple, self-contained C++ file (math.cpp) like this:
int add(int x, int y) {
return x + y;
}
How would I compile it to WebAssembly (math.wasm)?
Note: I am using the Clang tool-chain.
How do I compile a C++ file to WebAssembly?
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6 Answers
As of 2019, Clang (8) supports webassembly out of the box. Here is a repository that contains everything needed to compile, link and run a simple .wasm file.
Based on the answers in this thread, I've created a little guide.
For me, the easiest way was to compile emscripten (the website is also a great starting point!) on my machine, compile the code to wasm, generate the appropriate bindings and hide all this in a wrapper on the JS-Side to that I get a nice interface.
Because of the name mangling of c++, I've found getting started with C is easier.
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