--- a/cmake.SlackBuild	2022-04-30 19:32:40.309799140 +0000
+++ b/cmake.SlackBuild	2023-07-23 12:19:17.386850887 +0000
@@ -50,6 +50,13 @@ if [ "$ARCH" = "i586" ]; then
   SLKCFLAGS="-O2 -m32 -march=i586 -mtune=i686"
 elif [ "$ARCH" = "s390" ]; then
   SLKCFLAGS="-O2"
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "riscv64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+  LDFLAGS="-latomic"
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
 else