[cfe-dev] installation of scripts

Alexander Droste via cfe-dev cfe-dev at lists.llvm.org
Sun Sep 25 03:38:29 PDT 2016


Hi Laszlo,

thanks for working on this.

Sure, one of the example projects for the MPI-Checker should serve
as a minimal example:
https://github.com/0ax1/MPI-Checker/tree/master/examples/make/basic
MPICH and Open MPI are common MPI implementations.
They should be available through brew/apt-get/dnf/etc.

(2) I see, I thought this enforces the user to have the g++ bin available.

-Alex

On 24.09.16 15:55, Laszlo Nagy wrote:
> hi Alex,
>
> thanks for your feedback. about your point on MPI wrapper compiler, can you hint
> me a project which needs that (and has a little intro for beginners how to
> compile/install)? would like to experiment this anomaly and fix the problem.
>
> (1) yes
> (2) compiler can be anything in a compilation database
> <http://clang.llvm.org/docs/JSONCompilationDatabase.html>. this particular file
> is used in tests are consumed by `analyze-build`. wanted to pin down that it
> also works with any compiler name. (can't write comment in JSON files, sorry)
>
> regards,
> Laszlo
>
> On Sat, Sep 24, 2016 at 10:20 PM, Alexander Droste
> <alexander.ra.droste at googlemail.com <mailto:alexander.ra.droste at googlemail.com>>
> wrote:
>
>     Ah, I thought it had been completed when
>     https://reviews.llvm.org/D9600 was committed.
>     Thanks for giving an overview about the state.
>     I've been using the scripts since the commit
>     on a dozen of projects and didn't experience any
>     problems.
>
>     But I would like to point out one thing:
>     Using 'intercept-build' and then 'analyze-build'
>     seems to act a little different than only using
>     'scan-build' when it comes to wrapper compilers.
>     'intercept-build + analyze-build' works in case of
>     using an MPI wrapper compiler, whereas 'scan-build'
>     never emits any reports.
>
>     (1) The shared library is made of a single file, right (ear.c)?
>
>     (2) Regarding the tests, the compilation databases
>     sometimes denote 'g++' as the used compiler.
>     https://github.com/llvm-mirror/clang/blob/master/tools/scan-build-py/tests/functional/src/compilation_database/build_clean.json.in#L4
>     <https://github.com/llvm-mirror/clang/blob/master/tools/scan-build-py/tests/functional/src/compilation_database/build_clean.json.in#L4>
>     This seems suspicious. Shouldn't this be 'cc'?
>
>     Cheers,
>     Alex
>
>
>     On 24.09.16 03:24, Anna Zaks wrote:
>
>         + Laszlo
>
>         The scan-build-py script is currently under development. The main
>         remaining pieces are:
>
>         (1) Build the library interposition shared libraries as part of the
>         normal clang build process with CMake. This will make sure the library
>         is built with the same compiler that builds clang.
>         (2) Integrate scan-build-py's unit and functional tests into clang’s
>         lit-based test suite so they can be run on the bots. Without this we
>         can't qualify scan-build-py as part of clang 4.x releases.
>         (3) Dogfood and fix bugs if any.
>         (4) Actually add the script installation code.
>
>         Are you using the script?
>
>         Thanks!
>         Anna.
>
>             On Sep 13, 2016, at 5:22 AM, Alexander Droste via cfe-dev
>             <cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>> wrote:
>
>             Hi,
>
>             I'd like to know why some scripts like 'run-clang-tidy.py' get installed
>             into a separate folder (/usr/local/share/clang instead of
>             /usr/local/bin on
>             OSX) and why the scan-build Python package, including
>             intercept-build and
>             analyze-build, is not part of the installation at all. Is there an
>             option
>             to choose the Python scan-build version?
>
>             -Alex
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>
>
>


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