From ligges at statistik.tu-dortmund.de  Thu Nov 17 14:12:34 2011
From: ligges at statistik.tu-dortmund.de (Uwe Ligges)
Date: Thu, 17 Nov 2011 14:12:34 +0100
Subject: [Rd] cygwin R-2.14.0 build fail
In-Reply-To: <4EC4F0EE.2040508@gmail.com>
References: <1321107923.21160.YahooMailNeo@web27002.mail.ukl.yahoo.com>
	<4EC3D2BD.8070008@gmail.com>
	<alpine.LFD.2.02.1111162027520.28593@gannet.stats.ox.ac.uk>
	<4EC42656.6010704@gmail.com>
	<5B230290-335A-4825-9C2A-D30E54028A43@gmail.com>
	<4EC44869.3040206@gmail.com>
	<4EC4CFC2.7040407@statistik.tu-dortmund.de>
	<4EC4F0EE.2040508@gmail.com>
Message-ID: <4EC50842.6040006@statistik.tu-dortmund.de>



On 17.11.2011 12:33, marco atzeri wrote:
> On 11/17/2011 10:11 AM, Uwe Ligges wrote:
>
>> Everybody in this discussion invested too much time on it already. If
>> you want to provide cygwin support for others, go ahead and tackle the
>> problems, but don't distribute incorrectly working versions of R.
>>
> Dear Uwe,
>
> first test versions are always by definition incorrectly
> working versions.
>
> Reading
> http://cran.r-project.org/doc/manuals/R-admin.html#BLAS
> http://cran.r-project.org/doc/manuals/R-admin.html#LAPACK
>
> it is clear that R relies with its internal BLAS and Lapack
> implementation, differently from a lot of other packages.
> May I suggest to add an additional note that also
> external BLAS is not recommended as done for LAPACK.
>
> It will be also worth to add a "not recommended" on the
> configure --help
> output
>
> --with-blas use system BLAS library (if available),
> or specify it [no]
> --with-lapack use system LAPACK library (if available),
> or specify it [no]
>
> as it is not obvious and it could mislead newcomers like me.

External BLASs work for me perfectly on other platforms than cygwin. 
Hence it is cygwin that I would not recommend given the native Windows 
version is both faster and passes the checks.

Uwe Ligges



>> Best,
>> Uwe Ligges
>
> Best Regards
> Marco
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel



[Rd] cygwin R-2.14.0 build fail
Uwe Ligges