Date: Mon, 15 Nov 2021 19:40:58 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Mark Millard <marklmi@yahoo.com> Cc: "brooks@freebsd.org" <brooks@FreeBSD.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, freebsd-current <freebsd-current@freebsd.org>, freebsd-ports@freebsd.org, "freebsd-arm@freebsd.org" <arm@freebsd.org> Subject: Re: armv7 targeting (on aarch64, via poudriere-devel): system's clang 13 rejected building devel/lllvm13 Message-ID: <91AD337B-6D40-4639-A43C-688699981167@FreeBSD.org> In-Reply-To: <15A74B79-47CF-4743-A831-D7C0E9B1DD0E@yahoo.com> References: <15A74B79-47CF-4743-A831-D7C0E9B1DD0E.ref@yahoo.com> <15A74B79-47CF-4743-A831-D7C0E9B1DD0E@yahoo.com>
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On 15 Nov 2021, at 19:14, Mark Millard via arm <arm@freebsd.org> wrote:
>=20
> There error was:
>=20
> error: non-constant-expression cannot be narrowed from type 'long =
long' to 'std::size_t' (aka 'unsi
> gned int') in initializer list [-Wc++11-narrowing]
> std::size_t resultBytes{size * elementBytes};
> ^~~~~~~~~~~~~~~~~~~
> =
/wrkdirs/usr/ports/devel/llvm13/work/llvm-project-13.0.0.src/flang/runtime=
/misc-intrinsic.cpp:50:27: note: insert an explicit cast to silence this =
issue
> std::size_t resultBytes{size * elementBytes};
> ^~~~~~~~~~~~~~~~~~~
> static_cast<size_t>( )
The flang subproject does quite a lot of mixing of size_t and uint64_t, =
assuming in various places that they are the same. You will also =
encounter similar errors when attempting to build it for e.g. i386, or =
other 32 bit architectures. I think it is quite a lot of work to get all =
of these right, and it should really be discussed upstream.
So for now, I would advise to only turn on the flang option for amd64 by =
default.
-Dimitry
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