[Rd] More problems with building R on a musl platform

[Alba Pompeo]

Here is tests/reg-tests-1c.Rout.fail -
http://pastebin.com/raw/3QVDUBwT

About the libm, I don't know which one R uses.
musl has its on libm. http://git.musl-libc.org/cgit/musl/tree/src/math
I think I also have openlibm installed, but I don't think that's used.

Any more information I can give to help debug this?

Thanks.


On Mon, Feb 1, 2016 at 3:49 PM, Martin Maechler
<maechler at stat.math.ethz.ch> wrote:
>>>>>> Alba Pompeo <albapompeo at gmail.com>
>>>>>>     on Mon, 1 Feb 2016 15:33:11 -0200 writes:
>
>     > Here's what I did.
>     > svn checkout https://svn.r-project.org/R/trunk/
>     > cd ./trunk
>     > aclocal -I m4 && autoconf
>     > tools/rsync-recommended
>     > cd ..
>     > mkdir build
>     > cd build
>     > ../trunk/configure
>     > make
>     > make check
>
>     > On make check it gives an error.
>     > Here's the log.
>     > http://pastebin.com/raw/1qfjqQY2
>
> Thank you.  It shows some output differences for complex
> arithmetic, which *may* be a bad sign for the  musl routines, or
> the (also alternative ??)  math lib  you have on your platform.
> But these differences where not leading to the failure,
> rather is the reason close to the end of the log:
> ------------------------------------------------
> make[3]: *** [reg-tests-1c.Rout] Error 1
> ------------------------------------------------
>
> and these are the very latest regression checks, so they should not fail.
> If you want, you can also make the
>    tests/reg-tests-1c.Rout.fail
>
> file available via a link above,
> but to me, it currently looks there needs to be a bit more work
> on your system libraries (or possibly on our configuration) side
> before you should bundle R with your Alpine Linux.
>
> I'd call it "unsafe" for now.
> Martin
>
> --
> Martin Maechler, ETH Zurich and R Core Team.
>
>     >>>> On Feb 1, 2016, at 4:16 AM, Martin Maechler <maechler at stat.math.ethz.ch> wrote:
>     >>>>
>     >>>>>>>>>> Alba Pompeo <albapompeo at gmail.com>
>     >>>>>>>>>> on Fri, 29 Jan 2016 08:23:26 -0200 writes:
>
>   [.........]
>
>     >>>>>>> However, there are a couple little issues with non-ASCII
>     >>>>>>> text and a *lot* of math differences, many of which say
>     >>>>>>> "*no* convergence: NOTIFY R-core!".
>     >>>>>
>     >>>>> Hmm, I may be off, but these would look like entirely unrelated
>     >>>>> with the libc_stack_end availibility, wouldn't they ?
>     >>>>>
>     >>>>> Maybe you / the musl developers should try to make those C
>     >>>>> libraries more "standard", notably because I would see math
>     >>>>> differences as something pretty grave for R, and indeed, I would
>     >>>>> not want to use a platform where R's math functions work
>     >>>>> incompatibly with all other platforms ... but maybe I
>     >>>>> misunderstand completely.
>     >>>>>
>     >>>>> Hmm... I've found this,
>     >>>>>
>     >>>>> http://wiki.musl-libc.org/wiki/Functional_differences_from_glibc#Floating-point_and_mathematical_library
>     >>>>>
>     >>>>> which make what you say above more relevant/interesting.
>     >>>>>
>     >>>>> Still, from this thread I get that the C source code of R needs
>     >>>>> considerable configuration patches before R can work with musl.
>     >>>>> But that needs another thread, something like  'Building R with musl'.
>     >>>>>
>     >>>>>>> Until these are resolved, R can't be packaged for
>     >>>>>>> distributions that use musl, such as Alpine Linux.
>     >>>>>
>     >>>>> which I agree would not be ideal.
>     >>>>> Martin
>     >>>>>
>     >>>>> --
>     >>>>> Martin <Maechler at stat.math.ethz.ch>  http://stat.ethz.ch/people/maechler
>     >>>>> Seminar für Statistik, ETH Zürich