[Rd] cygwin R-2.14.0 build fail

Uwe Ligges ligges at statistik.tu-dortmund.de
Thu Nov 17 14:12:34 CET 2011

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
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