linux-kernel - Re: how can we test the hexagon port in mainline

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Message-ID: <CAKwvOd=iRLQPum8-jaCG90TPyxDptNB31yRHMEWgSMxjv=KuHA@mail.gmail.com>
Date:   Thu, 8 Jul 2021 10:54:03 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Brian Cain <bcain@...eaurora.org>,
        Sid Manning <sidneym@...eaurora.org>,
        Arnd Bergmann <arnd@...db.de>, linux-hexagon@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: how can we test the hexagon port in mainline

On Wed, Jul 7, 2021 at 10:27 PM Christoph Hellwig <hch@....de> wrote:
>
> On Wed, Jul 07, 2021 at 10:42:27AM -0700, Nathan Chancellor wrote:
> >> hch@...ck:~/work/linux$ make -j4 ARCH=hexagon
> >> CROSS_COMPILE=hexagon-unknown-linux-musl LLVM=1 LLVM_IAS=1 defconfig all
> >> HOSTCC  scripts/basic/fixdep
> >> clang: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory
> >
> > Hmmm, is that with libtinfo5 installed (or whatever the ncurses-compat
> > equivalent is on your distribution installed)? I had that problem on Debian
> > until I insta
>
> I did install libtinfo5, which just gets me to the next error:
>
> hch@...ck:~/work/linux$ export PATH=/opt/clang+llvm-12.0.0-cross-hexagon-unknown-linux-musl/x86_64-linux-gnu/bin/:$PATH
> hch@...ck:~/work/linux$ make -j4 ARCH=hexagon CROSS_COMPILE=hexagon-unknown-linux-musl LLVM=1 LLVM_IAS=1 defconfig all
>   HOSTCC  scripts/basic/fixdep
> clang: error while loading shared libraries: libc++.so.1: cannot open shared object file: No such file or directory

^ Nathan did mention earlier in the thread that he "had to install
libtinfo5 and libc++1-7 on Debian Buster." Emphasis on the _and
libc++_ part.

I'm not sure if that binary distribution came with a libc++.so.1; if
so, that path needs to be specified via LD_LIBRARY_PATH so that the
runtime loader can find it.  Perhaps rpath wasn't set when the clang
binary was built.

We're looking into statically linked images of clang to prevent these
kinds of games.

> make[2]: *** [scripts/Makefile.host:95: scripts/basic/fixdep] Error 127
> make[1]: *** [Makefile:543: scripts_basic] Error 2
> make: *** [Makefile:346: __build_one_by_one] Error 2
>


-- 
Thanks,
~Nick Desaulniers