[R-pkg-team] Bug#963392: [Help] Re: r-cran-rstanarm: FTBFS: error: (converted from warning) TBB library not found.

[Shayan Doust]

Hello Andreas,

Yes, this does seem like a local issue to r-cran-rcppparallel.

tbb and variants are loaded when r-cran-rcppparallel is imported, as seen in
[hooks.R]. The function of interest is 'tbbLibPath()', which seems to depict tbb
library path.

With some more investigation, you can see this function within [build.R]. You
can see for all supported platforms apart from Windows and Sparc systems, it
seems like it expects the library to be situated under lib/ (due to the first
argument used within system.file()).

I'll try to write a simple patch for this hook file. For a Debian package, this
assumption for library location is plain wrong.

Kind regards,
Shayan Doust


[hooks.R]:
https://github.com/RcppCore/RcppParallel/blob/b216ba27dcbd3c523932bd918b6dd0b1b08d3566/R/hooks.R#L8
[build.R]:
https://github.com/RcppCore/RcppParallel/blob/b216ba27dcbd3c523932bd918b6dd0b1b08d3566/R/build.R#L66

On Tue, 8 Sep 2020 20:32:53 +0200 Andreas Tille <andreas at an3as.eu> wrote:
> Control: tags -1 help
> 
> Hi,
> 
> any help why TBB is not found?  I think this issue is actually causes by
> r-cran-rcppparallel since the code copy of libtbb was removed there -
> but it seems to not provide the Debian packaged lib properly.
> 
> Kind regards
> 
>     Andreas.
> 
> -- 
> http://fam-tille.de
> 
> 
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