Hi Dirk, thanks for your reply.
> PS Also try > > -e "QuadFunc:::CxxFlags()") > > instead of > > -e "library(QuadFunc); QuadFunc:::CxxFlags()") > > as the ::: finds unexported symbols, that usually works from unloaded > packages too. It works for unloaded packages that don't use modules. Since QuadFunc uses modules, this results in an error > Rscript -e "QuadFunc:::CxxFlags()" Error: .onLoad failed in loadNamespace() for 'QuadFunc', details: call: value[[3L]](cond) error: failed to load module QuadraticFunctionModule from package QuadFunc Execution halted whereas loading the library first doesn't > Rscript -e "library(QuadFunc); QuadFunc:::CxxFlags()" Loading required package: methods Loading required package: Rcpp -IC:/R/win-library/2.12/QuadFunc/include Perhaps I'm mis-using modules and should change something in my NAMESPACE or in R/zzz.R to get rid of this error? You can get the same error using Rcpp.package.skeleton( 'testmodA', module=TRUE ) (see the first email). > And because of LinkingTo: QuadFunc you may not need the CxxFlags. This is correct in this case. If another package links to QuadFuncVec, then I think the dependencies become a bit more complicated (but I might be mistaken here). Either the new package needs to add QuadFunc to the LinkingTo: field, or QuadFuncVec:::CxxFlags() should return the flags of all its dependencies. In this case I would choose to implement QuadFuncVec:::CxxFlags() returning its own flags and those from QuadFunc:::CxxFlags(). That way the user has to worry a bit less about dependencies. At least, that was what I came up with after some experimentation yesterday. Are the LinkingTo: fields obtained for the current package only, or also the LinkingTo: fields of the packages it links to also included? E.g. packB has LinkingTo: packA, packC has LinkingTo: packB. Are the include paths of packA automatically added to packC? That would make the CxxFlags() unnecessary in this case. Thanks, Jelmer _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
