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Date:      Fri, 12 Jan 2018 16:17:50 +0100
From:      Dimitry Andric <dim@FreeBSD.org>
To:        Shawn Webb <shawn.webb@hardenedbsd.org>
Cc:        freebsd-toolchain@freebsd.org
Subject:   Re: projects/clang600-import and ld.lld
Message-ID:  <7D27872B-1FAF-4DCE-AD90-B8F9EB866C75@FreeBSD.org>
In-Reply-To: <20180112143851.wzp373hapbsxyntu@mutt-hbsd>
References:  <20180112143851.wzp373hapbsxyntu@mutt-hbsd>

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On 12 Jan 2018, at 15:38, Shawn Webb <shawn.webb@hardenedbsd.org> wrote:
>=20
> I know it's early in the game, but I thought I'd report this anyways.
> I have lld as the default linker (MK_LLD_IS_LD=3Dyes). When lld tries =
to
> link usr.bin/clang/llvm-extract/llvm-extract, lld errors out with some
> unresolved symbols. The log is below.
>=20
> Has anyone else run into this?
>=20
> /usr/obj/scratch/hbsd-playground/amd64.amd64/tmp/usr/bin/ld: error: =
undefined symbol: compressBound
>>>> referenced by Compression.cpp:63 =
(/scratch/hbsd-playground/contrib/llvm/lib/Support/Compression.cpp:63)
>>>>              Compression.o:(llvm::zlib::compress(llvm::StringRef, =
llvm::SmallVectorImpl<char>&, llvm::zlib::CompressionLevel)) in archive =
/usr/obj/scratch/hbsd-playground/amd64.amd64
> /lib/clang/libllvm/libllvm.a

It links fine for me, and I haven't heard any other reports of this, but
can you please try adding a line:

LIBADD+=3D        z

to usr.bin/clang/llvm-extract/Makefile locally, and see if that fixes it
for you?

At some point I've tried minimizing the number of libraries pulled in,
and on my systems llvm-extract didn't use any of the compression
functions.  If you compile it differently, it could end up pulling in
those functions anyway.

Do you have any non-default settings in make.conf or src.conf?

-Dimitry

P.S. The clang600-import branch should be mostly ready for general
consumption, except for a number of ports that are still problematic,
see https://bugs.freebsd.org/224669


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