Re: [Rd] Updated Windows toolchain

From: Dan Tenenbaum <dtenenba_at_fhcrc.org>
Date: Thu, 19 Jan 2012 16:40:57 -0800

2012/1/19 Uwe Ligges <ligges_at_statistik.tu-dortmund.de>:
> For the records: This rsync infelicity has been solved in the meantime.

I can confirm that it works; just downloaded r58140. Thanks!
Dan

>
> Uwe Ligges
>
>
> On 19.01.2012 02:03, Dan Tenenbaum wrote:
>>
>> Hi Uwe,
>>
>> 2012/1/18 Uwe Ligges<ligges_at_statistik.tu-dortmund.de>:
>>>
>>>
>>>
>>> On 18.01.2012 01:09, Dan Tenenbaum wrote:
>>>>
>>>>
>>>> Hello,
>>>>
>>>> On Mon, Jan 9, 2012 at 12:28 AM, Prof Brian Ripley
>>>> <ripley_at_stats.ox.ac.uk>    wrote:
>>>>>
>>>>>
>>>>> CRAN Windows binary packages built for R-devel are now online, and
>>>>> Uwe's
>>>>> winbuilder has gained the ability to check source packages under
>>>>> R-devel.
>>>>>
>>>>> Windows check results are available from
>>>>> http://cran.r-project.org/bin/windows/contrib/checkSummaryWin.html
>>>>> and in due course from the main CRAN check page.
>>>>>
>>>>> There have been a few updates to the toolchain:
>>>>>
>>>>> (i) It is now based on a beta of gcc 4.6.3, and so reports almost the
>>>>> same
>>>>> compilation warnings/errors as the CRAN check machines.
>>>>>
>>>>
>>>> Is the binary R-devel provided by CRAN built against this toolchain?
>>>> If it is, should I expect "R --arch x64 CMD config CC" to report
>>>> "gcc"? It still reports "x86_64-w64-mingw32-gcc" (R-devel 58077).
>>>
>>>
>>>
>>> Actually "gcc -m64" and that is also the case when I just tried
>>> yesterday's
>>> CRAN version (which is 58125). I guess you have an older version of R in
>>> your PATH?
>>>
>>
>>
>> I can't seem to download the latest R-devel. When I try and download this
>> file:
>> http://cran.r-project.org/bin/windows/base/R-devel-win.exe
>>
>> and install that, it turns out to be r58077. I've tried with two
>> different browsers and with curl, and with another CRAN mirror. I
>> tried this on a fresh machine with no previous R installations or
>> installer .exes lying around.
>>
>> The web page
>> http://cran.r-project.org/bin/windows/base/rdevel.html
>> says I should be downloading r58133 but that doesn't seem to be the
>> case....can you look into this?
>>
>>
>>>
>>>
>>>
>>>> Also, I have the latest Rtools installed (VERSION.txt reads "Rtools
>>>> version 2.15.0.1911") and it is first on my PATH.
>>>>
>>>> I expect "gcc --version" to report 4.6.3 but it still says 4.5.0.
>>>>
>>>> "x86_64-w64-mingw32-gcc --version" reports 4.5.2.
>>>> "which gcc" reports "/cygdrive/c/Rtools215/MinGW/bin/gcc".
>>>>
>>>> "which x86_64-w64-mingw32-gcc" reports
>>>> "/cygdrive/c/Rtools215/MinGW64/bin/x86_64-w64-mingw32-gcc".
>>>
>>>
>>>
>>>
>>> Yes, these are the version you need for old versions of R that are
>>> included
>>> in the Rtools, but it has a third gcc in subdir gcc-4.6.3 which is the
>>> one
>>> you should have first in the path in order to use the new toolchain.
>>
>>
>>
>> Good, I did not know about this directory. I will put it first in my
>> PATH after I am able to get a recent R-devel binary.
>> Thanks,
>> Dan
>>
>>
>>
>>
>>>
>>> Uwe Ligges
>>>
>>>
>>>
>>>
>>>
>>>>> (ii) There are various bug-fixes to the toolchain: notably x^n and
>>>>> exp(x)
>>>>> use gradual underflow to denormal numbers rather than abrubtly
>>>>> underflowing
>>>>> to zero.
>>>>>
>>>>> (iii) This is a 'multilib' toolchain: the compiler is named 'gcc.exe'
>>>>> for
>>>>> both architectures, selected by flag -m32 (the default) and -m64.
>>>>
>>>>
>>>>
>>>> Looks like to check gcc versions I should (instead of what I do above)
>>>> do simply "gcc --version". I imagine that "gcc -m32 --version" would
>>>> report the same thing as "gcc -m64 --version".
>>>>
>>>> Thanks,
>>>> Dan
>>>>
>>>>
>>>>>
>>>>>
>>>>> On 29/11/2011 07:56, Prof Brian Ripley wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> An updated toolchain is now being used for Windows' builds of R-devel:
>>>>>> details are in the R-admin manual and at
>>>>>> http://www.murdoch-sutherland.com/Rtools/ and
>>>>>> http://www.stats.ox.ac.uk/pub/Rtools/
>>>>>>
>>>>>> Both 32- and 64-bit parts of the toolchain use v2.0.1 of the Mingw-w64
>>>>>> project's runtime and a beta of gcc 4.5.4: the Mingw.org project's
>>>>>> builds are no longer used. This should mean that code which compiles
>>>>>> for
>>>>>> 64-bit Windows also compiles for 32-bit Windows, and v.v. unless code
>>>>>> makes (incorrect but common) assumptions that pointers fit into longs.
>>>>>>
>>>>>> A very few packages will need modifications because they contain
>>>>>> declarations which clash with the headers in this toolchain: where we
>>>>>> are aware of problems the maintainers have been informed.
>>>>>>
>>>>>> At DLL level different Windows' toolchains should be compatible: at C
>>>>>> level they mostly are but at C++ level they are pretty much
>>>>>> incompatible
>>>>>> (so that for example GDAL has to be re-compiled for every toolchain:
>>>>>> and
>>>>>> Rcpp users need to be careful to use only one toolchain for Rcpp and
>>>>>> their packages). All the external software previously made available
>>>>>> (and more) is made available at http://www.stats.ox.ac.uk/pub/Rtools .
>>>>>>
>>>>>> The toolchain has support for OpenMP and pthreads: however OpenMP
>>>>>> support is not enabled by default in R (it is too slow to be much
>>>>>> use).
>>>>>> If you do make use of it in your packages, be aware that you will need
>>>>>> to ship the appropriate pthreads DLL(s).
>>>>>>
>>>>>> It is expected that there will be several further minor updates prior
>>>>>> to
>>>>>> the release of 2.15.0 in ca 4 months, but this step is the major one.
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
>>>>> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
>>>>> University of Oxford,             Tel:  +44 1865 272861 (self)
>>>>> 1 South Parks Road,                     +44 1865 272866 (PA)
>>>>> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>>>>>
>>>>> ______________________________________________
>>>>> R-devel_at_r-project.org mailing list
>>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>>
>>>>
>>>>
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