diff -urN WRF-3.w.orig/arch/configure_new.defaults WRF-3.w/arch/configure_new.defaults
--- WRF-3.w.orig/arch/configure_new.defaults	2015-06-26 21:59:10.000000000 +0000
+++ WRF-3.w/arch/configure_new.defaults	2023-03-23 07:56:07.000000000 +0000
@@ -42,6 +42,52 @@
 #ranlib
 CC_TOOLS        =      cc 
 
+
+###########################################################
+#ARCH    Linux i486 i586 i686 armv7l aarch64, armflang compiler with armclang #serial smpar dmpar dm+sm
+#
+DESCRIPTION     =       BSD ($SFC/$SCC)
+DMPARALLEL      =       # 1  
+OMPCPP          =       # -D_OPENMP
+OMP             =       # -fopenmp
+OMPCC           =       # -fopenmp
+SFC             =       armflang
+SCC             =       armclang
+CCOMP           =       armclang
+DM_FC           =       mpif90 -f90=$(SFC)
+DM_CC           =       mpicc -cc=$(SCC) -Wno-return-type
+FC              =       CONFIGURE_FC
+CC              =       CONFIGURE_CC
+LD              =       $(FC)
+RWORDSIZE       =       CONFIGURE_RWORDSIZE
+PROMOTION       =       #-fdefault-real-8
+ARCH_LOCAL      =       -DNONSTANDARD_SYSTEM_SUBR -DWRF_USE_CLM
+CFLAGS_LOCAL    =       -Ofast -mcpu=native -w -c # -DRSL0_ONLY -I$(ARMPL_INCLUDES_LP64_MP)
+LDFLAGS_LOCAL   =       -Ofast -mcpu=native -armpl -lamath -lm -lastring
+CPLUSPLUSLIB    =     
+ESMF_LDFLAG     =       $(CPLUSPLUSLIB)
+FCOPTIM         =       -Ofast -mcpu=native -funroll-loops
+FCREDUCEDOPT    =       $(FCOPTIM)
+FCNOOPT         =       -O0  
+FCDEBUG         =       # -g $(FCNOOPT)  # -fbacktrace -ggdb -fcheck=bounds,do,mem,pointer -ffpe-trap=invalid,zero,overflow
+FORMAT_FIXED    =       -ffixed-form
+FORMAT_FREE     =       -ffree-form -ffree-line-length-none
+FCSUFFIX        =     
+FCCOMPAT        =     
+BYTESWAPIO      =       -fconvert=big-endian -frecord-marker=4
+FCBASEOPTS_NO_G =       -mcpu=native -w $(FORMAT_FREE) $(BYTESWAPIO)
+FCBASEOPTS      =       $(OMP) $(FCBASEOPTS_NO_G) $(FCDEBUG)
+MODULE_SRCH_FLAG =
+TRADFLAG        =      -traditional
+CPP             =      cpp -P
+AR              =      armllvm-ar
+ARFLAGS         =      ru   
+M4              =      m4 -B 14000
+RANLIB          =      armllvm-ranlib
+RLFLAGS         =     
+CC_TOOLS        =      $(SCC) 
+NETCDFPAR_BUILD =      CONFIGURE_NETCDFPAR_BUILD
+
 ###########################################################
 #ARCH    Linux i486 i586 i686, gfortran compiler with gcc #serial smpar dmpar dm+sm
 #