--- a/sysfsutils.SlackBuild	2021-02-10 17:27:51.293527893 +0200
+++ b/sysfsutils.SlackBuild	2021-02-10 17:28:20.761509703 +0200
@@ -46,6 +46,10 @@
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi