Running ASan tests on AArch64

[Kostya Serebryany]

+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.


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 is outdated, here is how I built my clang toolchain: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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