[Rcpp-devel] loading failed

[Fabio Tordini]

Done already, without success. The whole Makevars file is as follows (I 
didnt paste it before):

OBJECTS.PnuChart = ngraph.o RcppExports.o
OBJECTS.PnuChart = PnuChart/Finder.o
OBJECTS = $(OBJECTS.PnuChart)

PKG_CPPFLAGS = -DPRINTLOG -I"../inst/include" -I. -pthread
PKG_LIBS = -lcurl -lpthread `$(R_HOME)/bin/Rscript -e 
"Rcpp:::LdFlags()"` $(R_HOME)/bin/Rscript -e "RcppGSL:::LdFlags()"`
CXX_STD = CXX11

And the g++ linking phase:

g++ -std=c++0x -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions 
-Wl,-z,relro -o NgrapH.so PnuChart/Finder.o -lcurl -lpthread 
/usr/lib/R/bin/Rscript -e RcppGSL:::LdFlags()/usr/lib/R/bin/Rscript -e 
Rcpp:::LdFlags()-L/usr/lib -lgsl -lgslcblas -lm -L/usr/lib/R/lib -lR



Fabio



On 05/05/2015 11:14 PM, Kevin Ushey wrote:
> You need to link to GSL as well. RcppGSL provides the appropriate flags
> within `RcppGSL::LdFlags()`. See what RcppGSL does itself in its
> configure scripts:
> https://github.com/eddelbuettel/rcppgsl/blob/2849b8dd777c8057e524c2141dfeaa8e28840350/inst/skeleton/configure.win.
>
> Kevin
>
>
> On Tue, May 5, 2015 at 2:08 PM, Fabio Tordini <tordini at di.unito.it
> <mailto:tordini at di.unito.it>> wrote:
>
>     Ok, I found the 'scrm' Rcpp package: here the file scrmr.cpp
>     provides an interface for calling the scrm C++ application from R.
>     following their solution, I modified my Makevars file, adding:
>
>     OBJECTS.PnuChart = ngraph.o RcppExports.o
>     OBJECTS.PnuChart = PnuChart/Finder.o
>     OBJECTS = $(OBJECTS.PnuChart)
>
>     Now the linker finds the object files and knows where functions
>     "are". so, previous error is solved.
>
>     but loading still fails with the following message:
>
>       /home/fabio/R/x86_64-pc-linux-gnu-library/3.0/NgrapH/libs/NgrapH.so: undefined symbol: gsl_vector_alloc
>     Error: loading failed
>
>     In fact, I do use gsl, that's why I added RcppGSL in the DESCRIPTION
>     file at 'LinkingTo'. Also, I use the attribute
>     '// [[Rcpp::depends(RcppGSL)]]' in those headers where GSL functions
>     are used, and included <RcppGSL.h>. I do not export those functions
>     because they're not called directly from R.
>
>     still, I get the loading failed error.
>
>
>     Fabio
>
>
>
>
>
>     On 05/05/2015 10:15 PM, Dirk Eddelbuettel wrote:
>
>
>         On 5 May 2015 at 16:28, Fabio Tordini wrote:
>         | Here is the actual (simple) code:
>         |
>         |       Finder *f = new Finder();
>         |       f->parseFiles(str_g, str_f, str_s);
>
>         So where is Finder implemented?
>
>         The computer tells you that you want to use it, but don't supply it.
>
>         Dirk
>
>     _______________________________________________
>     Rcpp-devel mailing list
>     Rcpp-devel at lists.r-forge.r-project.org
>     <mailto:Rcpp-devel at lists.r-forge.r-project.org>
>     https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
>
>

-- 
Fabio Tordini
PhD Candidate
Computer Science Dep.
University of Torino - Italy