See "Section 3.4 Types in Generated Code" of the Rcpp Attributes vignette (
https://cran.r-project.org/web/packages/Rcpp/vignettes/Rcpp-attributes.pdf)
On Wed, Sep 16, 2015 at 1:44 PM, John Merrill
wrote:
> I'm trying to build an R package which exposes functions which depend on
> Google's re2 library. In order to do that, I need to depend on
> /usr/local/include/re2.h.
>
> That's really easy in the main cpp files, since #include works The
> problem arises when I use compileAttributes() to generate an
> RcppExports.cpp file: the generated file doesn't contain the relevant
> #include line.
>
> I've search all the mailing lists I could find as well as groveling
> through all the documentation I could think of. Evidently, I've missed
> something obvious. How does one do this?
>
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