--- a/audiofile.SlackBuild	2021-02-13 03:07:58.359953637 +0200
+++ b/audiofile.SlackBuild	2021-02-13 03:08:32.803936019 +0200
@@ -60,6 +60,12 @@
 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"
 else
   SLKCFLAGS="-O2"
   LIBDIRSUFFIX=""
@@ -78,6 +84,10 @@
   \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
   -exec chmod 644 {} \+
 
+for pf in $CWD/*.patch.xz; do
+    xzcat ${pf} | patch -p1 --verbose || exit 1
+done
+
 # Configure:
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS -fpermissive" \