On 17 Nov 2021, at 21:07, Stefan Esser <s...@freebsd.org> wrote:
> 
> I have just received pkg-fallout for a port that has not been touched
> for several months, specifically lang/silq.
> 
> ld.lld: error: undefined hidden symbol: __start___minfo
>>>> referenced by terminal.d
>>>>              silq.o:(ldc.register_dso)
> 
> ld.lld: error: undefined hidden symbol: __stop___minfo
>>>> referenced by terminal.d
>>>>              silq.o:(ldc.register_dso)
> cc: error: linker command failed with exit code 1 (use -v to see invocation)
> Error: /usr/bin/cc failed with status: 1
> *** Error code 1
> 
> This port builds correctly with LLD12 from a port, but fails with the
> error message included above for both LLD13 from a port and LLD from
> the FreeBSD-CURRENT base system.

See https://bugs.llvm.org/show_bug.cgi?id=52384 where this is discussed.
Executive summary is to add -Wl,-z,nostart-stop-gc to your LDFLAGS, for
now at least. But as you can see in the upstream PR, not everybody is
happy with them flipping the default to on.

-Dimitry

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