Ticket #61700: patch-Portfile-ARM.diff

(a) Portfile vs. (b) Portfile-arm

@@ -36 +36 @@
 #OS 10.14 supports down to Mac Pro 5,1 that has Nehalem architecture
 if {${os.major} >= 18} {
     if {${os.arch} eq "arm"} {
-        # FIXME use correct arch name
-        #set blas_arch "???"
+        set blas_arch "ARMV8"
     } else {
         set blas_arch "NEHALEM"
     }