Re: [ptxdist] [PATCH] openssl: add dependency to libatomic

[Robert Schwebel <r.schwebel@pengutronix.de>]

On Sat, Apr 08, 2023 at 10:57:44PM +0200, Christian Melki wrote:
> >>> Hmm, with ptxdist-2023.04.0, I don't get the corresponding error any
> >>> more (and instead a reason warning that libatomic is unused). Let's drop
> >>> this for now.
> >>
> >> atomic is going to be highly dependent on toolchain, arch etc.
> >> unless you're going to be more specific I suspect complains will happen
> >> in both directions.
> > 
> > True - now with the change removed, I see the issue on MIPS. Our
> > "reason" checker now claims that /usr/lib/libcrypto.so.3 depends on
> > libatomic.so.1 which is not there. v7a and v8a and x86_64 seem to be
> > happy without it.
> > 
> >> I'd be more interested why and where this pops up than adding a
> >> blanket _ATOMIC.  Ie. I agree on the drop. :)
> > 
> > I'm a bit unsure what to do now :)
> 
> Toolchain versions?

Same as before: 
OSELAS.Toolchain-2022.10.0/mips-softfloat-linux-gnu/gcc-12.2.1-glibc-2.36-binutils-2.39-kernel-6.0.5-sanitized

> What mips are we talking about?

See above, mips-softfloat-linux-gnu.

> If a sufficiently modern gcc doesn't provide a complete set of
> intrinsics for atomics then libatomic is going to be the only choice.

At least some configure scripts report
"checking for lock-free atomic intrinsics... yes"

> Can you figure out what symbols would be attached to libatomic?

rsc@dude05:~/work/DistroKit$ selected_toolchain/mips-softfloat-linux-gnu-nm -n platform-mips/packages/openssl-3.1.0/usr/lib/libcrypto.so.3 | grep LIBATOMIC
         U __atomic_fetch_or_8@LIBATOMIC_1.0
         U __atomic_is_lock_free@LIBATOMIC_1.0
         U __atomic_load_8@LIBATOMIC_1.0

> I'm suspecting that if you have an older gcc(?) some intrinsics might
> not be available.

rsc
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