Bug fix for Windows users

Author: randef1ned

src/Makevars.win

@@ -6,5 +6,5 @@ PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS)
 ## enable compilation with C++11 (or even C++14) where available
 CXX_STD = CXX17
 
-PKG_CPPFLAGS = -w -I../inst/include/ -I"C:/Program Files (x86)/Intel/oneAPI/mkl/latest/include" -Wno-ignored-attributes -DMKL_ILP64 -m64 -DRCPP_USE_UNWIND_PROTECT -fopenmp -O3 -march=native -fno-math-errno -mfma
+PKG_CPPFLAGS = -w -I../inst/include/ -I"C:/Program Files (x86)/Intel/oneAPI/mkl/latest/include" -Wno-ignored-attributes -DMKL_ILP64 -m64 -DRCPP_USE_UNWIND_PROTECT -fopenmp -O3 -fno-math-errno
 PKG_CXXFLAGS = $(SHLIB_OPENMP_CXXFLAGS) -DEIGEN_INITIALIZE_MATRICES_BY_ZERO -DEIGEN_NO_DEBUG