Georgi, Wrong list? Try rcpp-devel for Rcpp question.
On 8 December 2015 at 14:37, Georgi Boshnakov wrote: | Hi, | | With a collaborator we are working on a package which uses Rcpp and RcppArmadillo. Our *.cpp files start with something like | | // [[Rcpp::depends(RcppArmadillo)]] Use that when you use sourceCpp() on a file. In a package, use LinkingTo:. See the vignette Rcpp Attributes in the Rcpp package. | #include <iostream> | #include "RcppArmadillo.h" | | using namespace arma; | using namespace std; | using namespace Rcpp; I much prefer explicit namespacing in my package code (as opposed to quick one-offs). Then again this should not break things. | Running compileAttributes() generates an RcppExports.cpp which gives errors unless we manually add | | using namespace arma; | | when everything is fine. Is this outside the scope of the automatic facilities? | | compileAttributes() puts the corresponding directive for the Rcpp namespace but even after reading every possible source I could not figure out how to make this happen for the "arma" namespace. There are over 170 packages on CRAN which use RcppArmadillo. When I am stuck on problem I often find that compare with that something similar that works is a good approach. | The same problem appears when using devtools::test() which exits with an error if RcppExports.cpp is not generated by it but if I remove that file, my understanding is that devtools::test() calls compileAttributes() with the effect of producing invalid file and with little indication for the users what has gone wrong, besides the message "Error: Command failed (1)". The Rcpp documentation does neither mention nor recommend devtools, so I'd first try without it. But seems like a side effect of the earlier issue. Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
