--- a/libao.SlackBuild	2021-02-13 03:33:22.059111353 +0200
+++ b/libao.SlackBuild	2021-02-13 03:33:45.891097959 +0200
@@ -40,6 +40,10 @@
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi