--- a/x11.SlackBuild	2021-02-13 00:12:32.969584071 +0200
+++ b/x11.SlackBuild	2021-02-13 00:13:02.889573183 +0200
@@ -86,10 +86,24 @@
 
 if [ "$ARCH" = "x86_64" ]; then
   LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  LIBDIRSUFFIX="64"
 else
   LIBDIRSUFFIX=""
 fi
 
+# add build aarch64
+[[ ! $(xzcat arch.use.flags.patch.xz | patch -p1 --batch --dry-run -N | grep previously) ]] && ( xzcat arch.use.flags.patch.xz | patch -p1 --verbose || exit 1 )
+[[ ! $(xzcat package-blacklist.patch.xz | patch -p1 --batch --dry-run -N | grep previously) ]] && ( xzcat package-blacklist.patch.xz | patch -p1 --verbose || exit 1 )
+[[ ! $(xzcat modularize.patch.xz | patch -p1 --batch --dry-run -N | grep previously) ]] && ( xzcat modularize.patch.xz | patch -p1 --verbose || exit 1 )
+
+# fix build arch
+sed  -e 's/\(-slackware\)\(-linux.*\s\)/-unknown\2/g' \
+     -e 's/\(-slackware\)\(-linux$\)/-unknown\2/g' \
+     -i configure/*
+
 # Set up a few useful functions:
 
 fix_perms() {