Hi Dirk! Thanks a lot for the quick reply. I will definitely try your suggestions. It could take a little longer though, as I destroyed my System 30 mins ago while I was a little too nasty on the shell.
I will try as soon as I reconstructed everything. Best Simon! Gesendet über den BlackBerry® Service von E-Plus. -----Original Message----- From: Dirk Eddelbuettel <[email protected]> Date: Wed, 4 Sep 2013 12:30:08 To: Simon Zehnder<[email protected]> Cc: rcpp-devel\@lists.r-forge.r-project.org<[email protected]> Subject: Re: [Rcpp-devel] Symbol not found when including an external library On 4 September 2013 at 18:51, Simon Zehnder wrote: | Dear Rcpp::Users, Rcpp::Devels, | | I am following the ongoing discussion 'How to use external C++ libraries in R packages withRcpp' (Makevars are still one of my weaknesses) and I have a related question. | | I am trying to use the C++ optimization library nlopt (http://ab-initio.mit.edu/wiki/index.php/NLopt) in my package that is based on RcppArmadillo. In a first step I installed nlopt in a subfolder of the 'src' folder of my package structure (so I have '/src/nlopt-2.3'). Second, I included the header file into my source file right below '#include <RcppArmadillo.h>'. Then I set my Makevars file to: | | ## Use the R_HOME indirection to support installations of multiple R version | NLOPT_VERSION = 2.3 | | NLOPT_LIBS = -lm nlopt-${NLOPT_VERSION}/lib/libnlopt_cxx.a | | NLOPT_INCL = -I./nlopt-${NLOPT_VERSION}/include | | PKG_CPPFLAGS = ${NLOPT_INCL} | PKG_CFLAGS = -pipe ${NLOPT_INCL} | PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()"` ${NLOPT_LIBS} | | Calling 'R CMD INSTALL packageName' compiles without errors but produces the well-known error during loading the shared library: | | Error in dyn.load(file, DLLpath = DLLpath, ...) : | unable to load shared object '/Library/Frameworks/R.framework/Versions/3.0/Resources/library/finmix/libs/finmix.so': | dlopen(/Library/Frameworks/R.framework/Versions/3.0/Resources/library/finmix/libs/finmix.so, 6): Symbol not found: __ZNSt8__detail15_List_node_base11_M_transferEPS0_S1_ Briefly: i) Please show the actual linking step. ii) Mixing shared and static is a bit messy, but I have done it too I think. You may want to try _an absolute path_ to the .a library, and a different link position, eg place ${NLOPT_LIBS} first. This is definitely doable. Dirk | I find the missing symbol (using 'nm -A libnlopt_cxx.a | grep "transfer"' on the shell) in the static library of nlopt (libnlopt_cxx.a) to which I link in the Makevars, but I do not know yet, how I have to modify the Makevars to include also the static library of nlopt into the shared library of my package. Does anyone have a suggestion how to do it? | | | Best | | Simon | | | _______________________________________________ | Rcpp-devel mailing list | [email protected] | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel -- Dirk Eddelbuettel | [email protected] | http://dirk.eddelbuettel.com _______________________________________________ Rcpp-devel mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
