I’m running rstan 2.21.2 (CRAN version) in R 4.0.3 on Windows and I got the error described in this thread. Rolling back to withr 2.2.0 fixed it, but now I have a different problem. When I call stan_model()
, not only does the resulting model not use the flags in my Makevars.win
, but the Makevars.win
file is actually deleted. I’ve tried restoring it, but it gets deleted again every time.
I’m wondering if this behavior is somehow related to this:
I don’t have -march=native
in my Makevars. Based on this advice, it looks like:
CXX14FLAGS = -mtune=native -O3 -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2
Calling get_cxxflags()
on the stanmodel returns:
CXXFLAGS = -O2 -Wall $(DEBUGFLAG) -mfpmath=sse -msse2 -mstackrealign
Any idea what’s going on and how to fix it?
Sorry if this issue has been covered somewhere; I’m a little lost with all the R 4.0-related threads. Thanks in advance!