Running ASan tests on AArch64

[Christophe Lyon]

On 22 December 2014 at 14:12, Evgeniy Stepanov <eugenis at google.com> wrote:
> This is probably because aarch64 is not in ASAN_SUPPORTED_ARCH.
>
Indeed! Now that my board is back online, I managed to execute the asan tests.
I can see failures, I'll look at them in more details.

Thanks

>
> On Sat Dec 20 2014 at 9:46:36 AM Christophe Lyon
> <christophe.lyon at linaro.org> wrote:
>>
>> 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 is outdated, here is how I built my clang toolchain: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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