A new release 0.3.3.9.1 of RcppEigen arrived on CRAN today (and just went to Debian too) bringing support for Eigen 3.3.9 to R. Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
The release started with a gentle nudge from the Stan team to package Eigen 3.3.8. And once I got around to it and sat down, Eigen 3.3.9 had just been released the previous day. The freshly prepared release 0.3.3.9.0 was then announced on Twitter (and the rcpp-devel mailing list) along with a request for testing alongside the usual extended reverse dependency checking we do (just like CRAN asks us to). And it turns out that Eigen 3.3.9 required an update to StanHeaders, a CRAN package that is itself quite widely used. This took a couple of days and its round of testing, but Ben Goodrich shipped it to CRAN last night, so we were able to ship RcppEigen in turn today.
So this release once again bring few required changes to Eigen (see this directory for details). As we said for the previous three releases:
One additional and recent change was the accomodation of a recent CRAN Policy change to not allow
clangto mess with diagnostic messages. A word of caution: this may make your compilation of packages using RcppEigen very noisy so consider adding
-Wno-ignored-attributesto the compiler flags added in your
I actually find this requirement rather annoying. Eigen is then only usable if you set, say,
-Wno-deprecated-declarations -Wno-parentheses -Wno-ignored-attributes -Wno-unused-function
g++ options in
~/.R/Makevars. But CRAN makes the rules. Maybe if a few of us gently and politely nudge them they may relent one day. One can only hope.
NEWS file entry follows.
Changes in RcppEigen version 0.3.3.9.1 (2020-12-17)
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