[LLVMdev] [Compiler-rt] -march=aarch64 flag in gcc/clang

[Renato Golin]

Hi Sumanth,

Christophe (cc'd) is seeing the same problems on his build. It seems
that r181130 (by Tim) has something to do with it, but I'm not sure.

I remember trying to build compiler-rt on AArch64 natively in
February, and even running the test-suite with it, so I'm sure it
should work (modulo regressions).

We desperately need a full buildbot on AArch64, but we also need to
common up all docs, especially the one in the sanitizer's page, since
they're not following what the rest of the LLVM community is doing,
ie. building all in one tree.

cheers,
--renato

On 1 December 2014 at 22:42, Gundapaneni, Sumanth <sgundapa at quicinc.com> wrote:
> Hi,
>
>       I wonder if this is a valid flag in either clang/gcc.
>
> The flag in question is “-march=aarch64”. I verified with latest tip and
> neither clang nor gcc fail to recognize this flag.
>
> This piece of code is in cmake/config-ix.cmake in compiler-rt repo.
>
>
>
> +  elseif("${COMPILER_RT_TEST_TARGET_ARCH}" MATCHES "aarch64")
>
> +    test_target_arch(aarch64 "-march=aarch64")
>
>
>
> Anyone have any thoughts or any suggestions ? Currently this is blocking my
> compiler-rt build for aarch64-linux.
>
>
>
> --Sumanth G