Date: Sat, 11 Aug 2018 18:05:51 -0600 From: Warner Losh <imp@bsdimp.com> To: Mark Millard <mark.millard@nexustechnology.com> Cc: Dimitry Andric <dim@freebsd.org>, "freebsd-toolchain@FreeBSD.org" <freebsd-toolchain@freebsd.org> Subject: Re: Broken arm support in clang now? Message-ID: <CANCZdfq4NmT6_W9MwSMC8r4fQfxW8fWyh1pOX5snnVLNEvew9A@mail.gmail.com> In-Reply-To: <8B467E75-A6D3-41A5-8EA1-4DDFE0E14CC5@nexustechnology.com> References: <CANCZdfpmDN-nAkViuEx-tKpPhOdRYX=xNu6s8E2o6F4xC2WPnA@mail.gmail.com> <1880880F-9D9D-47E0-A7A4-5369A3770F89@FreeBSD.org> <CANCZdfpF9ND_k2xvZrsDebsZ07p2RU0Lebp5GDtmxnjdXc=N-A@mail.gmail.com> <A5B46840-B508-4F40-9EFD-50D0439EBAC7@FreeBSD.org> <8B467E75-A6D3-41A5-8EA1-4DDFE0E14CC5@nexustechnology.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, Aug 11, 2018 at 1:01 PM, Mark Millard <
mark.millard@nexustechnology.com> wrote:
> On 2018-Aug-11, at 11:09 AM, Dimitry Andric <dim at FreeBSD.org> wrote:
> >
> > On 11 Aug 2018, at 19:31, Warner Losh <imp at bsdimp.com> wrote:
> >>
> >> On Sat, Aug 11, 2018, 10:20 AM Dimitry Andric <dim@freebsd.org> wrote:
> >> On 11 Aug 2018, at 16:55, Warner Losh <imp@bsdimp.com> wrote:
> >>>
> >>> It looks like armv5 clang bogusly uses lld:
> >>>
> >>> From a 'make buildkernel' of the RT1310 kernel config:
> >>>
> >>> cc -target arm-gnueabi-freebsd12.0
> > ...
> >>> ld: warning: lld uses extended branch encoding, no object with
> architecture
> >>> supporting feature detected.
> >>> ld: warning: lld may use movt/movw, no object with architecture
> supporting
> >>> feature detected.
> > ...
>
> Did the build get either of the below notices? Both?
>
> make[1]: "/usr/src/Makefile.inc1" line 341: SYSTEM_COMPILER: Determined
> that CC=cc matches the source tree. Not bootstrapping a cross-compiler.
>
This one I have.
> make[1]: "/usr/src/Makefile.inc1" line 346: SYSTEM_LINKER: Determined that
> LD=ld matches the source tree. Not bootstrapping a cross-linker.
>
This one I don't.
Warner
> ?
>
> (The example text was taken from an amd64 -> aarch64 cross build.)
>
> >> Host is amd64. Target is arm. No src.conf. Did a full buildworld
> TARGET=arm a few days ago. /usr/bin/ld is lld.
> >
> > Okay, so in the above "cc" command, can you somehow figure out which cc
> > executable it is using? And please add a -v to the "linking kernel.full"
> > command line, so it shows exactly which linker it runs?
> >
> > I have the idea that it is preferring your /usr/bin/ld over
> > ${WORLDTMP}/usr/bin/ld...
>
>
>
> ===
>
> Mark Millard
> Nexus Technology, Inc.
> 78 Northeastern Blvd., Unit #2
> Nashua NH 03062
>
> 877-595-8116 x821
>
> mark.millard@nexustechnology.com
>
>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfq4NmT6_W9MwSMC8r4fQfxW8fWyh1pOX5snnVLNEvew9A>