--- a/nn.SlackBuild	2021-02-13 01:55:29.436979459 +0200
+++ b/nn.SlackBuild	2021-02-13 01:56:00.348972445 +0200
@@ -52,6 +52,14 @@
   SLKCFLAGS="-O2 -fPIC -fcommon"
   LIBDIRSUFFIX="64"
   MFILE="m-x86_64.h"
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC -fcommon"
+  LIBDIRSUFFIX="64"
+  MFILE="m-i80386.h"
+elif [ "$ARCH" = "riscv64" ]; then
+  SLKCFLAGS="-O2 -fPIC -fcommon"
+  LIBDIRSUFFIX="64"
+  MFILE="m-i80386.h"
 else
   SLKCFLAGS="-O2 -fcommon"
   LIBDIRSUFFIX=""