Running ASan tests on AArch64

[Christophe Lyon]

On 19 December 2014 at 20:46, Kostya Serebryany <kcc at google.com> wrote:
> +folks who deal with the bots more often.
>
> If you need to run check-asan, here are the instructions that work for me on
> x86-64 linux
> https://code.google.com/p/address-sanitizer/wiki/HowToBuild?tm=4
> Alexey, Evgeniy, Sergey may have more ideas on why this doesn't work for
> you.
>
Tried that, but same error.
The build seems OK, but make check-asan won't start.
The same procedure works on x86_64.

> On Thu, Dec 18, 2014 at 6:18 AM, Christophe Lyon
> <christophe.lyon at linaro.org> wrote:
>>
>> Hi,
>>
>> [sorry for the possible duplicate, the list server was not working
>> correctly when I first sent this message]
>>
>> I would like to run ASan tests on AArch64, to make sure I don't break
>> them while doing some cleanup.
>>
>> Since it seems that
>> http://clang.llvm.org/get_started.html
>> is outdated, here is how I built my clang toolchain:
>> - checkout LLVM, Clang and compiler-rt
>> - add clang and compiler-rt symlinks into llvm/tools and llvm/projects
>
>
> this sounds unusual.
> did you try to checkout compiler-rt and clang directly in their places, w/o
> creating symlinks?
>
> --kcc
>
>>
>> - call cmake:
>>   cmake ../llvm_tmp_src -DCMAKE_BUILD_TYPE=Release ../llvm_tmp_src/
>> - build:
>> - make -j4
>>
>> This seemed to work, after I patched compiler-rt/cmake/config-ix.cmake
>> and replaced -march=aarch64 with -march=armv8-a.
>>
>> At this point, make check-asan does not work:
>> make: *** No rule to make target `check-asan'.  Stop.
>>
>> So I tried the last part of the instructions found here:
>> https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerTestSuite
>>
>> mkdir compiler-rt_obj && cd compiler-rt_obj
>> cmake -DCMAKE_C_COMPILER=/your/c/compiler \
>>         -DCMAKE_CXX_COMPILER=/your/cxx/compiler \
>>         -DLLVM_CONFIG_PATH=../llvm_tmp_obj/bin/llvm-config \
>>         ../compiler-rt_src
>>
>> Using the compiler previously built above as /your/c/compiler.
>>
>> This step succeeds too, or seems to.
>>
>> But still, make check-asan:
>> make: *** No rule to make target `check-asan'.  Stop.
>>
>> I must be missing something.
>>
>> What is the recommended way of running asan tests?
>>
>> Thanks
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