--- a/libgudev.SlackBuild	2021-02-10 17:24:05.109682527 +0200
+++ b/libgudev.SlackBuild	2021-02-10 17:24:35.921660461 +0200
@@ -48,6 +48,10 @@
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi