[Rcpp-devel] Unable to load shared object
Dirk, Thank you for your fast reply! With regard to your specific suggestions: |Two suggestions.? First, try creating a simple package without MathGL just to |make sure you have that process of going from sourceCpp via compileAttributes |to a package licked.?? Yes, I did successfully create a simple package (using RStudio) as a "warm-up" exercise (I created a package for the classic gibbs.cpp function). I can load the package, and use the gibbs function as expected. |Second, and as an alternative, try it the other way |without attributes.? There are a number of simple package that link to |external libraries; you could pick any as an example.? I'm not quite sure what you mean by this one. Could you please give me a brief description/procedure as to how to do this? (I'm still a bit of? a newbie with Rcpp...) |The linmk error rings a faint bell, but I cannot quite connect the dots. You |don't by chance have two version of Rcpp installed -- in /usr/local and below |/home/hp, say? No, I don't have two versions installed. Just to be sure, I removed what I had and re-installed (actually upgraded to 0.10.4). Same issue... After going some googling on this, the consensus seems to be that there's something awry with ldconfig or LD_LIBRARY_PATH environment variable setting. Thanks!
From: Dirk Eddelbuettel <edd at debian.org>
To: Jules Archer <jules.archer at ymail.com>
Cc: "rcpp-devel at lists.r-forge.r-project.org" <rcpp-devel at lists.r-forge.r-project.org>
Sent: Tuesday, July 9, 2013 10:35 PM
Subject: Re: [Rcpp-devel] (no subject)
To: Jules Archer <jules.archer at ymail.com>
Cc: "rcpp-devel at lists.r-forge.r-project.org" <rcpp-devel at lists.r-forge.r-project.org>
Sent: Tuesday, July 9, 2013 10:35 PM
Subject: Re: [Rcpp-devel] (no subject)
Hi Jules,
On 9 July 2013 at 22:16, Jules Archer wrote:
| Hi,
|
| I've been trying to integrate the mathGL plotting library into R with Rcpp,
| with the ultimate goal of rendering in the browser.? So far, I've been
| successful with creating simple plotting test functions, compile with sourceCpp
| ("myplotter.cpp") and output *.png and *.json files for browser 3D plotting.
Cool.
| However, when I try to compile as an R package, I keep getting the following
| error:
|
| ** building package indices
| ** testing if installed package can be loaded
| Error in dyn.load(file, DLLpath = DLLpath, ...) :
|? unable to load shared object '/usr/local/lib/R/site-library/mathGL/libs/
| mathGL.so':
|? /usr/local/lib/R/site-library/mathGL/libs/mathGL.so: undefined symbol:
| _ZTIN4Rcpp14not_compatibleE
| Error: loading failed
| Execution halted
| ERROR: loading failed
|
| The mathGL.so library was created and exists. For reference, I'm using the
| following flags in the Makevars file:
|
| PKG_CXXFLAGS=-"I/home/hp/Downloads/mathgl-2.1/include/mgl2" -lmgl
| PKG_LIBS=-L/usr/local/lib/
|
| Any ideas or thoughts as to what the "undefined symbol" error means and how to
| resolve this would be greatly appreciated.
Two suggestions.? First, try creating a simple package without MathGL just to
make sure you have that process of going from sourceCpp via compileAttributes
to a package licked.? Second, and as an alternative, try it the other way
without attributes.? There are a number of simple package that link to
external libraries; you could pick any as an example.
The linmk error rings a faint bell, but I cannot quite connect the dots. You
don't by chance have two version of Rcpp installed -- in /usr/local and below
/home/hp, say?
Dirk
| Thanks!
|
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