On 11 November 2016 at 23:48, Kirill Müller wrote: | After upgrading to Ubuntu 16.10, which brings GCC 6, I've noticed that | packages are compiled in C++14 mode by default. Here's what a g++ | command for compiling one of Rcpp's modules look like on my system: | | g++ -I/usr/share/R/include -DNDEBUG -I../inst/include/ -fpic -g -O2 | -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time | -D_FORTIFY_SOURCE=2 -g -c barrier.cpp -o barrier.o | | According to GCC news [1], the default is now C++14 if no -std is given. | R-admin suggests adapting the configuration for GCC 6 [2]. | | I'm using r-base-core in version 3.3.2-1xenial0 from the Ubuntu repo | [3]. Please advise.
Hm. We had g++-6.* (which does indeed default to C++14) in Debian unstable for a while now, without problems. This issue _may_ be fixable by rebuilding r-base-core, but then it would have been needed for Debian too. Not sure. This may be an Ubuntu-lagging-Debian issue because we may be rebuilding more consistently in Debian whereas Ubuntu thinks that R is built with gcc-5 (as it was) but is now used with gcc-6. Ooops. You _could_ try idea this by editing /etc/R/Makeconf and inserting the missing -std=c++-98 for the default CXX builds. I am still on 16.04 with my machines as I had too much other stuff going on. Please try a test or two at your end and report back. We should be able to get this squared. 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
