[R-pkg-devel] Changing optimization level when building package?
On 07/07/2022 3:41 a.m., Tomas Kalibera wrote:
On 7/5/22 16:11, Ivan Krylov wrote:
On Tue, 5 Jul 2022 09:35:05 -0400 Duncan Murdoch <murdoch.duncan at gmail.com> wrote:
I see the -O0 option that I added, but afterwards -O2 coming from somewhere in R.
It seems to come from the CXXFLAGS macro defined in /etc/R/Makeconf. It's the last to be added to ALL_CXXFLAGS, so you probably have to overwrite it in ~/.R/Makevars.
Yes. I set both CFLAGS and CXXFLAGS in my Makevars_dbg0 file and let R use it via R_MAKEVARS_USER. See R-Admin, 6.3.3, Customizing package compilation, for more. Tomas
In my case, the necessary settings needed to be put in CXX11FLAGS, because rgl defines CXX_STD = CXX11. Thanks to Kevin Ushey and Prof. Brian Ripley for spotting this. Duncan Murdoch