Duncan, ----- Original Message ----- > From: "Duncan Murdoch" <murdoch.dun...@gmail.com> > To: "r-de...@r-project.org" <r-de...@r-project.org>, > rcpp-de...@r-forge.wu-wien.ac.at > Sent: Wednesday, March 18, 2015 6:27:26 AM > Subject: [Rcpp-devel] Windows gcc toolchain for R 3.2.0 > > To anyone following the Windows toolchain saga: > > The gcc 4.9.2 toolchain that is currently in Rtools33 has too many > incompatibilities with existing code, so we won't be using it in the > R > 3.2.0 build. I will soon be uploading to CRAN a new version of > Rtools33 > that is very similar to Rtools32, containing gcc 4.6.3. > > We are continuing to work on the new toolchain, and hope to have it > ready before R 3.2.1 is released.
Thanks very much for your work on this. > > The known problems are as follows: > > - C++ code should not call Rf_error(), as it uses longjmp, and the > behaviour of longjmp is undefined in C++ when destructors need to be > called. However, a number of packages do call Rf_error, and in gcc > 4.6.3, they get away with it. In our candidate 4.9.2 build, they > crashed. If we can't work around this, I'll suggest that we test for > the presence of Rf_error in C++ code, and start issuing warnings or > errors when it is seen. But before we do that, we need a solid > replacement. > > - There are some other crashes that appear to be unrelated, also > with > C++ code. > > - There are some subtle differences in arithmetic that result in > tests > failing. These may be due to bugs in MinGW-w64 code, > or may be unavoidable. Is it not considered a "known problem" that C++ libraries linked against by R packages need to be rebuilt with g++ 4.9.2 in order for the R packages to install/load? Thanks again, Dan > > Duncan Murdoch > _______________________________________________ > 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
