PKG_LIBS =  $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) $(SHLIB_OPENMP_CFLAGS)
PKG_CFLAGS = $(SHLIB_OPENMP_CFLAGS)
## *Both* the above must be *uncommented* for release

#PKG_CFLAGS = -g -O0 -Wall -pedantic $(SHLIB_OPENMP_CFLAGS)
## Actually it now seems that you need to reset optimization flag in
## cd /usr/local/lib/R/etc/
## sudo pico Makeconf
## This file can add flags but not modify what's in the above!
## `#' out previous line for release (but not without uncommenting openMP)