On 13 November 2016 at 00:13, Kirill Müller wrote: | On 13.11.2016 00:00, Dirk Eddelbuettel wrote: | > On 12 November 2016 at 22:54, Kirill Müller wrote: | > | > [... lots of stuff deleted ...] | > | > | I noticed this because plogr logging crashed in dplyr (compiled with gcc | > | 6) right after upgrading to yakkety; I still had a gcc-5 built version | > | of Rcpp installed. As soon as I added -std, everything worked as before. | > | No minimal example, sorry. Don't we need "-std=c++98" in Makevars | > | anyway, even if it's just to avoid users using C++11 constructs and then | > | wondering why their packages fail on CRAN? | > | > There is still no minimally preproducible example here; just a (pardon me | > here) rambling description of a hasty system upgrade. | > | > It is _somewhat common_ to have to recompile C++ shared objects when compiler | > major versions change. | > | > So I am unsure if we have actually demonstrated a bug here. | Don't we need "-std=c++98" for GCC 6 in Makevars anyway, even if it's | just to save users from using C++11 constructs and then wondering why | their packages fail on CRAN/winbuilder? In my case it also saves me from | recompiling "all of CRAN" (at least for now); that's a nice side effect, | but the first part also looks important to me.
It's a fair, and open, question. We may, and then we may get away with not rebuilding; or we may not, but then have to pay by rebuilding all. I am somewhat surprised I haven't been asked to rebuild Debian packages. There too we do have binary depends on C++ packages from CRAN, ie r-cran-rcpp and r-cran-dplyr and whatnot. But then ... then Debian archive managers now just do 'binary rebuilds' as needed and I may be out of the loop. Sorry but I just don't have much better information. There are Debian Wiki pages on g++ transitions... Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian
