On 25 August 2015 at 16:02, Kevin Ushey wrote: | Doesn't CRAN R default to using -O2 flags when compiling C++ source | files? (I think the default is -O3 for C source files). | | Are you using CRAN R, or a locally built R? You might need to set that | explicitly yourself when configuring R?
Optimization levels are commonly - inherited from values stored in $R_HOME/etc/Makeconf and set at R's configure and compile time - locally set by the user via $HOME/.R/Makevars and we are generally advised not to set them in src/Makevars* in our packages. Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org _______________________________________________ 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
