Add wasm32 support to the build-obj, build-exe and build-lib commands
of the stage 1 compiler. Wasm64 should work transparently once it's
supported in upstream LLVM.
To export a function:
// lib.zig - for exposition, not necessary for this example
pub use @import("add.zig");
// add.zig
export fn add(a: i32, b: i32) i32 {
return a + b;
}
To import a function:
// cube.zig
extern fn square(x: i32) i32;
export fn cube(x: i32) i32 {
return x * square(x);
}
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