On Tue, Jan 23, 2018 at 05:07:32PM -0800, Po-yi Wang wrote:
> (gdb) run --version
> Starting program: /tmp/build/make-4.1/make-4.1 --version
>
> Program received signal SIGSEGV, Segmentation fault.
> strlen (s=0x0) at src/string/strlen.c:15
> 15              for (w = (const void *)s; !HASZERO(*w); w++);
> (gdb)

This means make is calling strlen(0), so the bug is somewhere else --
in whatever causing the string pointer passed to strlen to be a null
pointer. Can you show a full backtrace (bt) rather than just the point
of the crash?