Re: (solved) Re: undefined symbol: __aarch64_ldadd8_acq_rel since llvm12 (mongodb44)

 
Van: Ronald Klop <ronald-lists@klop.ws>
Datum: zondag, 25 juli 2021 08:10
Aan: FreeBSD Ports <freebsd-ports@freebsd.org>, Michal Meloun <mmel@FreeBSD.org>, Dimitry Andric <dim@FreeBSD.org>
Onderwerp: (solved) Re: undefined symbol: __aarch64_ldadd8_acq_rel since llvm12 (mongodb44)
> 
> Van: Dimitry Andric <dim@FreeBSD.org>
> Datum: 19 juli 2021 11:01
> Aan: Ronald Klop <ronald-lists@klop.ws>
> CC: FreeBSD Ports <freebsd-ports@freebsd.org>, Michal Meloun <mmel@FreeBSD.org>
> Onderwerp: Re: undefined symbol: __aarch64_ldadd8_acq_rel since llvm12 (mongodb44)
> 
> >
> >
> > On 19 Jul 2021, at 09:29, Ronald Klop <ronald-lists@klop.ws> wrote:
> > > > > Does anybody have a clue why I get this error since clang 12 on aarch64/arm64?
> > > Do other ports have the same issue?
> > > > > Regards,
> > > Ronald.
> > > > > Van: Ronald Klop <ronald-lists@klop.ws>
> > > Datum: vrijdag, 16 juli 2021 09:43
> > > Aan: freebsd-arm@freebsd.org
> > > Onderwerp: undefined symbol: __aarch64_ldadd8_acq_rel since llvm12 (mongodb44)
> > >> Hi,
> > >> I'm also maintaining databases/mongodb44 and this gives undefined symbols since llvm12 (I think).
> > >> See: http://www.ipv6proxy.net/go.php?u=http://ampere2.nyi.freebsd.org/data/main-arm64-default/pf44e1c1de734_s63ca9ea4f3/logs/errors/mongodb44-4.4.6.log
> > >> And look for:
> > >> ld.lld: error: undefined symbol: __aarch64_ldadd8_acq_rel
> > >> There are a bunch of similar symbols not found while linking.
> > >> This compiles fine using llvm11 or on amd64.
> >
> > It turns out clang 12 now enables -moutline-atomics by default, but we
> > don't yet expose the necessary functions from compiler-rt. As a
> > temporary workaround, compile with -mno-outline-atomics. Meanwhile,
> > adding these functions to the compiler-rt lib is on my TODO list.
> >
> > -Dimitry
> >
> >
> >
> >
> >
> >
> >
> 
> 
> Hi,
> Thanks for your explanation. I came up with patches for my ports.https://bugs.freebsd.org/bugzilla/buglist.cgi?quicksearch=Mongodb&list_id=432778
> 
> 
> Regards,Ronald.
> 
> 
> 


Hi Dimitry,

I upgraded my poudriere and tried building mongodb50 with -moutline-atomics enabled.
[00:00:56] Host OSVERSION: 1400032
[00:00:56] Jail OSVERSION: 1400032
...
[09:33:20] ld.lld: error: undefined hidden symbol: __aarch64_have_lse_atomics
[09:33:20] >>> referenced by outline_atomic_cas1_1.S:121
[09:33:20] >>>               outline_atomic_cas1_1.o:(__aarch64_cas1_relax) in archive /usr/lib/libgcc.a
[09:33:20] >>> referenced by outline_atomic_cas1_1.S:121
[09:33:20] >>>               outline_atomic_cas1_1.o:(__aarch64_cas1_relax) in archive /usr/lib/libgcc.a
[09:33:20] >>> referenced by outline_atomic_cas1_2.S:121
[09:33:20] >>>               outline_atomic_cas1_2.o:(__aarch64_cas1_acq) in archive /usr/lib/libgcc.a
[09:33:20] >>> referenced 57 more times
[09:33:20] c++: error: linker command failed with exit code 1 (use -v to see invocation)
[09:33:22] scons: *** [build/opt/mongo/shell/mongo] Error 1
[09:33:58] ld.lld: error: undefined hidden symbol: __aarch64_have_lse_atomics
[09:33:58] >>> referenced by outline_atomic_cas1_1.S:121
[09:33:58] >>>               outline_atomic_cas1_1.o:(__aarch64_cas1_relax) in archive /usr/lib/libgcc.a
[09:33:58] >>> referenced by outline_atomic_cas1_1.S:121
[09:33:58] >>>               outline_atomic_cas1_1.o:(__aarch64_cas1_relax) in archive /usr/lib/libgcc.a
[09:33:58] >>> referenced by outline_atomic_cas1_2.S:121
[09:33:58] >>>               outline_atomic_cas1_2.o:(__aarch64_cas1_acq) in archive /usr/lib/libgcc.a
[09:33:58] >>> referenced 57 more times
[09:33:59] c++: error: linker command failed with exit code 1 (use -v to see invocation)
[09:33:59] scons: *** [build/opt/mongo/db/mongod] Error 1



Mongodb42 and mongodb44 give the same error.
Is this something in the FreeBSD source? Or something in MongoDB source?
I can provide more logs if needed.

Regards,
Ronald.