extern "C" declarations not being generated

[dangquan-quoine]

i compiled this file demo.cpp :
extern "C" {
int do_something(){
return 0;
}
}
the tool is not generate do_something function. please help me.

[rpav]

Looks like extern "C" declarations are broken (now? before? not sure). The C++ aspects of this haven't been tested overly much.

[dangquan-quoine]

I use clang to compile c++ to web assembly, if i want to export function, i must let that function to extern "C". this case is parse with LinkageSpecDecl in clang. @rpav

[spaceotter]

If the WebAssembly interface can only use functions with C linkage, it sounds more like you need to use something like this project I'm working on: https://github.com/spaceotter/unplusplus - this generates C linkage stubs from a C++ library automatically. The header it generates can be processed as a C header without extern "C".

[rpav]

@spaceotter unplusplus looks like the holy grail for wrapping C++! Will definitely keep my eye on it.