___call_main is missing

[k1nder10]

Look at the following code:

main.cpp
#include
int main() {
std::cout << "Hello, emscripten!\n";
}

emcc main.cpp -o main.html -s MAIN_MODULE=1 -s USE_PTHREADS=1
When building it I'm getting an error "warning: ___call_main may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library". It comes up only if I combine main_module + pthread flags. I tried to add __call_main/_main to EXPORTED_FUNCTION but it didn't help. Is it expected behavior? What am I missing here?

emcc --version
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.8 (3ff7eff)

[sbc100]

__call_main is called by system/lib/pthread/emscripten_proxy_main.c when proxy main to another thread.

I think the problem is that -sMAIN_MODULE=1 is force including all the C library code including emscripten_proxy_main.c even though PROXY_TO_PTHREAD is not used.

Can you try with -sMAIN_MODULE=2.. this will produce a much smaller output and is highly recommended for this reason.

[k1nder10]

Yes, MAIN_MODULE=2 helps here. Suppressing this error helps as well.
Though it's strange that one 'cannot' use MAIN_MODULE=1 & pthreads together...

[sbc100]

This bug was fixed in #17153