--- a/blackbox.SlackBuild	2021-02-13 00:40:24.324343393 +0200
+++ b/blackbox.SlackBuild	2021-02-13 00:41:20.468286912 +0200
@@ -68,6 +68,12 @@
   arm)    export SLKCFLAGS="-O2 -march=armv4t"
           export LIBDIRSUFFIX="" 
           export ARCHQUADLET="-gnueabi" ;;
+ aarch64) export SLKCFLAGS="-O2 -fPIC"
+          export LIBDIRSUFFIX="64"
+          export ARCHQUADLET="" ;;
+ riscv64) export SLKCFLAGS="-O2 -fPIC"
+          export LIBDIRSUFFIX="64"
+          export ARCHQUADLET="" ;;
   *)      export SLKCFLAGS="-O2"
           export LIBDIRSUFFIX=""
           export ARCHQUADLET="" ;;