--- a/cryfs.SlackBuild	2021-02-13 03:13:10.899793637 +0200
+++ b/cryfs.SlackBuild	2021-02-13 03:13:40.759778334 +0200
@@ -63,6 +63,12 @@
 elif [ "$ARCH" = "armv7hl" ]; then
   SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
   LIBDIRSUFFIX=""
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
 else
   SLKCFLAGS="-O2"
   LIBDIRSUFFIX=""