Simon, Not sure if it'll help but take a look at https://github.com/Thell/RcppMultiPrecision/tree/wip-mpreal-wrappers
Particularly the flags.R, inline.R and mpreal_wrap_example.cpp. When I built this Dirk pointed me to several example packages in the thread [Rcpp-devel] Rcpp RMpfr mpreal to mpfr wrapping. http://lists.r-forge.r-project.org/pipermail/rcpp-devel/2012-April/003719.html On Fri, Jul 17, 2015 at 10:12 AM, Simon Barthelmé <simon.barthe...@gipsa-lab.fr> wrote: > Hi Kevin > > Thanks for your answer. I've tried declaring them as inline but the compiler > (clang, haven't tried gcc) issues a warning saying it's going to ignore the > inline statement. I'm assuming this is because the declaration is actually a > template specialisation but I haven't found a definitive answer. > If I separate the declaration from the definition, the linker now complains > as and wrap are missing. Using the interface:: attribute doesn't seem to > help either. > > Best > > Simon > > > Le 17/07/2015 16:56, Kevin Thornton a écrit : > > A good guess is that the as/wrap definitions in wrappers.h are the culprit > (https://github.com/dahtah/imager/blob/master/inst/include/wrappers.h). Try > declaring them as inline, or separating the definition from the declaration. > > —Kevin > > On Jul 17, 2015, at 7:32 AM, Simon Barthelmé <simon.barthe...@gipsa-lab.fr> > wrote: > > Dear list, > > For a package I'm developing (https://github.com/dahtah/imager/) I had to > write custom "as" and "wrap" functions for third-party classes. I'd like to > make these wrappers accessible to other developers via inline C++ as well as > LinkingTo directives (so that they can be used in other packages). > So far I've only managed the former: I have a header file in inst/include, > called "wrappers.h", that contains the full implementations of my custom as > and wrap functions. I've written a custom inline plugin and everything works > fine. However, LinkingTo doesn't work: wrappers.h gets included in multiple > object files and I get linking errors (the linker complains about multiple > declarations of "as" and "wrap"). > I understand RcppArmadillo manages to get around the problem but I can't > figure out how. What's the correct way of doing this? Is there a way of > making as and wrap inline functions so that it's safe to have header-only > implementations? > > Thanks! > > Simon Barthelme > > _______________________________________________ > 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 > > > > > > _______________________________________________ > 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 -- Sincerely, Thell _______________________________________________ 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
