Hi all, I am running R 2.6.2 in Windows XP with Rtools 2.7 and am trying to compile a shared library in Windows with customized level of optimization. Specifically, I would like to have "-O3 -funroll-loops" as flags when I run "R CMD SHLIB ***.cc" to speed the program for my simulations.
I have read through the documentation and have tried adding the line PKG_CXXFLAGS = -O3 -funroll-loops in my Makevars in my package's src directory. However, this places the flags before the -O2 flag, thereby overriding it. I have also tried creating a config.site file in R_HOME/etc, but that seems to be ignored. I found a possible solution at http://tolstoy.newcastle.edu.au/R/e2/devel/07/03/2520.html. However, when I use this suggestion, I get errors that R.h cannot be found. Please note that I do not plan to submit this package to CRAN or to other users with the modified flags, but I just need to set them on my machine to speed up simulations for testing, etc. I appreciate any suggestions, Ian -- View this message in context: http://www.nabble.com/problem-customizing-CXXFLAGS-in-Windows-tp16763558p16763558.html Sent from the R devel mailing list archive at Nabble.com. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
