R library() bug

[Marco Atzeri]

On 02/12/2023 00:29, Stephen P Carrier wrote:
> 
> 
> On Fri, Dec 1, 2023 at 3:24 PM Stephen P Carrier <carrier@berkeley.edu 
> <mailto:carrier@berkeley.edu>> wrote:
> 
> 
> 
>     On Tue, Nov 28, 2023 at 8:32 PM Marco Atzeri <marco.atzeri@gmail.com
>     <mailto:marco.atzeri@gmail.com>> wrote:
> 
>         On 29.11.2023 02:12, Stephen P Carrier via Cygwin wrote:
>          > I have found another issue with Cygwin R.
>          >
>          > This is for a brand new R installation (4.3.0) on up-to-date
>         Cygwin.  I am
>          > warned when starting R that "stats" package was not found. 
>         Though it was
>          > just a warning I do need the stats package for some things.
>          >
>          > Minimal test case:  I invoke "R" with no arguments and get:

>          > During startup - Warning message:
>          > package ‘stats’ in options("defaultPackages") was not found
>          >> library("stats")
>          > Error: package or namespace load failed for ‘stats’ in
>         dyn.load(file,
>          > DLLpath = DLLpath, ...):
>          >   unable to load shared object
>         '/usr/lib/R/library/stats/libs/stats.dll':
>          >    No such file or directory

Hi Stephen,
a big hint is what stats.dll requires

$ cygcheck /usr/lib/R/library/stats/libs/stats.dll | grep -v "^   "
C:\cygwin64\lib\R\library\stats\libs\stats.dll
   C:\cygwin64\bin\libR.dll
   C:\cygwin64\lib\lapack\cyglapack-0.dll

the last math library is, for specific system reason, in an unusual 
position, and for that reason the package provides the etc/profile to 
add "/usr/lib/lapack" to the PATH

$ cygcheck -l liblapack0
/etc/profile.d/lapack0.csh
/etc/profile.d/lapack0.sh
/usr/lib/lapack/cygblas-0.dll
/usr/lib/lapack/cyglapack-0.dl

$ echo $PATH
/home/marco/bin:/usr/local/bin:/usr/bin:/usr/lib/lapack:/usr/sbin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/d/utility

I assume that you are redefining the PATH and missed this Lapack directory


Regards
Marco