llvm dev - May 2018 - clang llvm cross compile with autotools

Hi

Now I am using clang and llvm to do cross compiling. My target architecture
is arm and the host is x86-64.  I am trying to compile coreutils and
SPEC2006(Anyone who ever has the same experience, please tell me. Really
need your help)

At the same time, I hope to generate the LLVM IR, which I can write PASS to
extract some information. I would also need the dwarf debug information.

I briefly describe my requirements above. I use the -save-temps option to
save the LLVM IR(please tell me whether this is the best solution). I try
to use -target arm-none-eabi to specify the architecture. However, when I
was compiling the coreutils, I come across such exceptions.

CCLD     src/chroot
/usr/bin/ld.gold: fatal error: --plugin-opt requires --plugin.
clang-7: error: ld.lld command failed with exit code 1 (use -v to see
invocation)
make[2]: *** [src/chroot] Error 1
make[2]: Leaving directory `/home/linux/share/coreutils-8.28-old'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/linux/share/coreutils-8.28-old'
make: *** [all] Error 2

I haven't try SPEC2006 since the configuration is not so familiar for me.
It would be great if anyone can give me some references. Or you have the
same experiences, please tell me your configuration and setup. Thank
everyone so much~~

Regards
Muhui
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