Hello! Is it possible to emit assembly in rustc and then compile it with GNU Assembler? I tried to do so, but I got these linker errors when I ran as and then ld:

ld: warning: cannot find entry symbol _start; defaulting to 0000000000401000
ld: a.o: in function `std::rt::lang_start':
hello.c3e402144fb7d6b4-cgu.0:(.text._ZN3std2rt10lang_start17hf8754b1fbdb05c66E+0x1a): undefined reference to `std::rt::lang_start_internal'
ld: a.o: in function `hello::main':
hello.c3e402144fb7d6b4-cgu.0:(.text._ZN5hello4main17ha49144bd44429a12E+0x31): undefined reference to `std::io::stdio::_print'
ld: a.o: in function `main':
hello.c3e402144fb7d6b4-cgu.0:(.text.main+0x21): undefined reference to `std::rt::lang_start_internal'

What am I doing wrong here?

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