bug#52711: undefined reference to '__muloti4'

[Eli Zaretskii]

> Date: Tue, 21 Dec 2021 19:30:42 +0000
> From: Alan Third <alan@idiocy.org>
> 
> I no longer seem to be able to build the master branch. I'm getting
> this error:
> 
>   CCLD     temacs
> fileio.c:6261: error: undefined reference to '__muloti4'
> clang: error: linker command failed with exit code 1 (use -v to see 
> invocation)
> make[2]: *** [Makefile:697: temacs] Error 1
> 
> I had a look but couldn't see where the problem comes from. I'm using
> clang on Debian testing, if that matters.

Try using "nm -A fileio.o" to see what is that function and which code
calls it.

If nothing else helps, try bisecting.  (But my crystal ball says it
isn't Emacs that changed, it's something else on that system.)