--- a/postfix.SlackBuild	2023-11-05 15:00:52.498636647 +0000
+++ b/postfix.SlackBuild	2023-11-05 15:00:19.777891955 +0000
@@ -59,6 +59,13 @@ elif [ "$ARCH" = "i686" ]; then
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+  unset LD_LIBRARY_PATH
 else
   SLKCFLAGS="-O2"
   LIBDIRSUFFIX=""