Good catch Simon.

Changed fstab to force exec on mount of the drive in question and things worked.

Thanks,

JN


Simon Urbanek wrote:

On Mar 10, 2010, at 12:43 , Prof. John C Nash wrote:

I've been having some strange problems with R CMD check in the last couple of days, but now believe I have localized the issue.

I had been running Ubuntu Hardy on one drive and then upgraded to Jaunty, but put Jaunty on a different drive. I continue to be able to boot Hardy when I wish. I soft-linked my R working area i.e.,

 /home/john/Rstuff  ---->    /media/lnx804/home/john/Rstuff

I can still build packages fine, but get

j...@nsrv-jaunty:~/jtest$ R CMD check minqa
* checking for working pdflatex ... OK
* using log directory '/media/store2/jn/test/minqa.Rcheck'
* using R version 2.10.1 (2009-12-14)
* using session charset: UTF-8
* checking for file 'minqa/DESCRIPTION' ... OK
* checking extension type ... Package
* this is package 'minqa' version '1.02'
* checking package name space information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking for executable files ... OK
* checking whether package 'minqa' can be installed ... OK
* checking package directory ... OK
* checking for portable file names ... OK
* checking for sufficient/correct file permissions ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... ERROR
Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared library '/media/store2/jn/test/minqa.Rcheck/minqa/libs/minqa.so': /media/store2/jn/test/minqa.Rcheck/minqa/libs/minqa.so: failed to map segment from shared object: Operation not permitted
Error : .onLoad failed in 'loadNamespace' for 'minqa'
Error: package/namespace load failed for 'minqa'
Execution halted

It looks like this package has a loading problem: see the messages for
details.

---------------------------------------------------------------------------- The above test was run with a newly created jtest/ directory on yet another drive (partition) to see if there was possibly corruption. However, the issue seems to be one of using a softlink.


I would be very surprised if this was softlink's fault per se. It looks more like a permission issue in your system to me -- the first thing I would check is that your /media/... is not mounted with noexec...

Cheers,
Simon


I would not be upset if R CMD check simply told me that this isn't the right way to do things i.e., don't use the softlinked directory.

Does anyone know if this is a recognized issue and is it possible to put some sort of reasonable error message into R CMD check?

JN

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