A new bug-fix / maintenance release RQuantLib 0.3.12 is now on CRAN and in Debian. While adding the plugin feature, I was too optmistic about finding the
quantlib-configscript. This is now tested more carefully. A few things related to building with Rcpp were updated as well now that Rcpp 0.11.0 is out. Thanks to CRANberries, there is also a diff to the previous release 0.3.11. Full changelog details, examples and more details about this package are at my RQuantLib page.