[Rcpp-devel] Problem loading a binary package which links dynamically with Rcpp

[Dirk Eddelbuettel]

Salut Fabien,

This is not a reproducible report ...

On 28 January 2013 at 10:19, Fabien Ors wrote:
| Hi,
| 
| I develop a binary R package (let's call it MyPack) which is not on the 
| CRAN and which depends from Rcpp (0.10.2).
| This package is built in-house under linux using the "R CMD INSTALL 
| --build" and a "Makevars" file containing :
| 
| PKG_CPPFLAGS = -I"$(R_HOME)/include" -I"$(R_HOME)/library/Rcpp/include"
| PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()"`
| 
| The problem is that I cannot load my package on another linux computer:
| 
|  > library(MyPack)
| Loading required package: Rcpp
| Error in dyn.load(file, DLLpath = DLLpath, ...):
| unable to load shared object '/Path/To/R_Packs/MyPack/libs/MyPack.so':
| libRcpp.so: cannot open shared object file: No such file or directory
| Error: package/namespace load failed for ‘MyPack’
| 
| Both Rcpp and MyPack have been installed using:
| R CMD INSTALL Rcpp_0.10.2.tar.gz -l /Path/To/R_Packs/
| R CMD INSTALL MyPack_1.0.0.tar.gz -l /Path/To/R_Packs/
| 
| And the path to R_Packs have been added to R_LIBS environment variable, so:
|  > .libPaths()
| [1] "/Path/To/R_Packs" "/usr/local/lib64/R/library"
| 
| If I install both packages as root (inside /usr/local/lib64/R/library/), 
| there is no problem.

That would indicate there is no problem per se with your or our code, but
rather with the setup of your computer. Maybe /etc/ld.so.conf is out of sync
with where you keep dynamic libraries -- hard to say without anything
reproducible. 

Dirk

| Any help would be greatly appreciated.
| 
| Thanks.
| Fabien
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-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com