Thanks, Floh. it works when the function is defined. Actually, my function is an external function declaration, like extern "C" void foo();
It doesn't work even I declare like this: extern "C" void EMSCRIPTEN_KEEPALIVE foo(). Do you have any idea for this situation? Floh <flo...@gmail.com> 于2019年5月2日周四 下午10:13写道： > Have a look at EMSCRIPTEN_KEEPALIVE: > https://emscripten.org/docs/api_reference/emscripten.h.html#c.EMSCRIPTEN_KEEPALIVE, > this prevents a C/C++ function from being removed even when it isn't > referenced by other C/C++ code (normally this is used to call C functions > from the JS side). > > On Thursday, 2 May 2019 08:16:43 UTC+2, Duan Bing wrote: >> >> I declare an external function in C source file, but never used by the >> code, then compile it to wasm by EMCC. there is no doubt the external >> function will be eliminated by the compiler. >> >> Is there any approach to keep this external function and then be compiled >> to an import function in wasm? >> >> The motivation to remain the external function is that I want to insert >> some wasm code in the wasm file after it's generated. >> >> Thanks all! >> > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to emscripten-discuss+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
