On Wed, 2006-01-11 at 17:26 -0500, Dan Lipsitt wrote:
> I have a dual Xeon x86_64 system running Red Hat AS 4. There are no
> x86_64 rpms in http://cran.us.r-project.org/bin/linux/redhat/el4/ (the
> i386 ones are a point release behind anyway) , and the fc4 rpms have a
> whole web of dependencies I don't want to pull in. So I decided to
> build
> http://cran.us.r-project.org/bin/linux/redhat/SRPMS/R-2.2.1-1.fc3.src.rpm
> .
>
> When I ran rpmbuild. one of the make-check tests failed.
>
> from /BUILD/R-2.2.1/tests/p-r-random-tests.Rout.fail:
> > dkwtest("weibull",shape = 1)
> weibull(shape = 1) FAILED
> Error in dkwtest("weibull", shape = 1) : dkwtest failed
> Execution halted
>
> I was able to build the rpm after removing "--enable-r-shlib" from the
> spec file.
>
> http://cran.us.r-project.org/bin/linux/redhat/SRPMS/ReadMe says:
> "The new SRPM for R 2.1.1 builds the shared library version of R. This is,
> unfortunately, slower than the version without the shared library."
>
> It doesn't say why, if it's slower, it builds it that way. Can anyone
> shed some light on the subject?
Well, I did it because people were asking for it. You need the shared
library to use embedded R or use a GUI. I considered that most people
using R on the command line would pay the speed penalty (or not notice)
and that people who really need the speed could always compile their
own. The penalty is not so bad (~10%) on x86_64 anyway.
Martyn
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