[R] dyn.load problem under linux

[Patrick Burns]

Some additional notes inserted below.

Domenico Vistocco wrote:

>Dear HelpeRs,
>I am trying to use an thirdy-part library under Linux  (the library is 
>developed
>both for Windows and for Linux).
>
>I have tried different solutions (with the library developer) but we are 
>not able to
>solve the problem. So I try to ask for your help in order to escape from 
>the full stop
>where we are at the moment.
>
>The problem looks to depend on the dyn.load function (technical details 
>are below).
>
>Thanks a lot for your work (it is an invaluable resource).
>Best,
>domenico
>
>The library is called POP.R. I installed it but I have the following 
>error when
>I try to load it:
>---------------------------------------------------------------------------------------------------------------------------------------------
> > library(POP.R)
>Error in dyn.load(x, as.logical(local), as.logical(now)) :
>        unable to load shared library 
>'/usr/lib/R/library/POP.R/libs/ezlic20.so':
>  libstdc++-libc6.2-2.so.3: cannot open shared object file: No such file 
>or directory
>Error in library(POP.R) : .First.lib failed for 'POP.R'
>---------------------------------------------------------------------------------------------------------------------------------------------
>
>Nevertheless the file exists:
>---------------------------------------------------------------------------------------------------------------------------------------------
> > file.exists("/usr/lib/R/library/POP.R/libs/ezlic20.so")
>[1] TRUE
>---------------------------------------------------------------------------------------------------------------------------------------------
>
>I tried also directly using the dyn.load function on the command line
>(without and with the local flag):
>---------------------------------------------------------------------------------------------------------------------------------------------
> > dyn.load("/usr/lib/R/library/POP.R/libs/ezlic20.so",local=FALSE)
>Error in dyn.load(x, as.logical(local), as.logical(now)) :
>        unable to load shared library 
>'/usr/lib/R/library/POP.R/libs/ezlic20.so':
>  libstdc++-libc6.2-2.so.3: cannot open shared object file: No such file 
>or directory
> > dyn.load("/usr/lib/R/library/POP.R/libs/ezlic20.so",local=TRUE)
>Error in dyn.load(x, as.logical(local), as.logical(now)) :
>        unable to load shared library 
>'/usr/lib/R/library/POP.R/libs/ezlic20.so':
>  libstdc++-libc6.2-2.so.3: cannot open shared object file: No such file 
>or directory
>  
>

We have seen that problems like this can arise if
there is a mixture of 32-bit and 64-bit items.  Everything
here is definitely 32-bit.

>---------------------------------------------------------------------------------------------------------------------------------------------
>
>In the lib directory there is also another library, for which I have a 
>different error
>message using the dyn.load function (I have the same message using 
>local=FALSE):
>---------------------------------------------------------------------------------------------------------------------------------------------
> > dyn.load("/usr/lib/R/library/POP.R/libs/pop_BurSt.so")
>Error in dyn.load(x, as.logical(local), as.logical(now)) :
>        unable to load shared library 
>'/usr/lib/R/library/POP.R/libs/pop_BurSt.so':
>  /usr/lib/R/library/POP.R/libs/pop_BurSt.so: undefined symbol: 
>getChainedKeyId
>  
>

This error message is actually good news -- it finds the
file (sitting right next to the one it can't "find") and gets so
far as to find a symbol that is in the first file.  That is, this
command appears like it would work if the first load worked.

>---------------------------------------------------------------------------------------------------------------------------------------------
>
>My operating system is Ubuntu 6.10 -  Edgy.
>  
>

I'm not sure what versions of Linux other clients have
(it's never been an issue before), but I know it works
in Suse.

Pat

>Follow the answers to version and sessionInfo:
>--------------------------------------------------------------------------------------------------
> > version
>               _                          
>platform       i486-pc-linux-gnu          
>arch           i486                       
>os             linux-gnu                  
>system         i486, linux-gnu            
>status                                    
>major          2                          
>minor          4.1                        
>year           2006                       
>month          12                         
>day            18                         
>svn rev        40228                      
>language       R                          
>version.string R version 2.4.1 (2006-12-18)
>
> > sessionInfo()
>R version 2.4.1 (2006-12-18)
>i486-pc-linux-gnu
>
>locale:
>LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
>
>attached base packages:
>[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods" 
>[7] "base"    
>--------------------------------------------------------------------------------------------------
>
>Chiacchiera con i tuoi amici in tempo reale! 
> http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com
>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
>
>
>  
>