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 <tord...@di.unito.it
<mailto:tord...@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
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--
Fabio Tordini
PhD Candidate
Computer Science Dep.
University of Torino - Italy
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