On Wed, Jul 25, 2018 at 5:57 PM Dirk Eddelbuettel <e...@debian.org> wrote:
> > On 25 July 2018 at 17:30, julien chiquet wrote: > | Hi, > | > | I am trying to wrap the optim library (https://github.com/kthohr/optim) > in > | R via an R package using Rcpp/RcppArmadillo. Indeed, optim relies on > | armadillo itself. The github repository can be found here > | https://github.com/jchiquet/optimLibR > | > | To do that, I put the headers of optim into inst/include/ and the cpp > files > | into src/. Then I tried to "heuristically" pull everything together in > the > | src/Makevars files, after my (obviously poor) understanding of the R > manual > | pages about Makevars and from the various examples that I copied from the > | web (especially from the RcppMLPACK1 which, relies on the C++ library > | MLPACK, itself based on armadillo > | https://github.com/rcppmlpack/RcppMLPACK1/blob/master/src/Makevars). > | > | The package installation (including compilation of optim) successes (at > | least, the package can be installed). Then I tried to create two small > Rcpp > | functions for two examples available in the original optim library, > | starting with the following lines > | > | // [[Rcpp::depends(RcppArmadillo)]]// [[Rcpp::plugins(cpp11)]] > | #define USE_RCPP_ARMADILLO > | #include "optim.hpp" > | > | (The #define command is an option of the optim library.) > | > | However, when I call the corresponding R functions, I get the following > | Armadillo errors in R which I do not have when running them in 'pure' C++ > | (I am pretty sure it is not a syntax problem, the Rcpp code and the > | original C++ code are hopefully identical, except for the headers). > | > | > library(optimLibR)> ackley_function()error: arma::memory::acquire(): > out of memory > | > | > library(optimLibR)> logit_optimLib()error: Mat::init(): requested size > is not compatible with column vector layout > | > | So it seems to me that the header of armadillo are correctly defined but > I > | am not sure that I reach the src (cpp) part of armadillo which is > required > | at the execution. > | > | If anyone can confirm or help pointing the origin of the error, I would > be > | debtful... > | > | Thanks for your time, > > Good news / bad news. I think the good news is that everything builds, so > you > have no linking issue. In fact, no RcppArmadillo package links to Armadillo > as we do everything via the headers. > > But you seem to have run-time issues which _could_ stem from the fact that > RcppArmadillo sets a bunch of #define variables and your use may be > slightly > different / conflict with these. Maybe you can check with Keith about how > his optim(lib) could / should be called from R. > Thanks for your prompt and helpful answer. At least I know I do not have to struggle with the Makevars. I'll check with Keith. j > Dirk > > -- > http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org >
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