llvm clang - lld undefined symbol: mainCRTStartup -

my cpp code

int main(int argc, char** argv){  } 

i use following command compile , link it:

// want read result ir clang -s -emit-llvm main.cpp   // want compile directly ir llc -filetype=obj main.ll lld -flavor link main.obj // <root>: undefined symbol: maincrtstartup link failed 

did miss something?

maincrtstartup function defined crt (which clang implicitly using in first step, , generates ir file maincrtstartup entry point)

try passing -nostdlib clang in first step

this mean won't able use standard library functions, though

if want use crt functions link lld need link in native libraries