diff --git a/configure/os/CONFIG.Common.darwin-aarch64 b/configure/os/CONFIG.Common.darwin-aarch64
new file mode 100644
index 000000000..eaba1efb2
--- /dev/null
+++ b/configure/os/CONFIG.Common.darwin-aarch64
@@ -0,0 +1,14 @@
+# CONFIG.Common.darwin-aarch64
+#
+# This file is maintained by the build community.
+#
+# Definitions for darwin-aarch64 target builds
+# Sites may override these definitions in CONFIG_SITE.Common.darwin-aarch64
+#-------------------------------------------------------
+
+#
+# To build universal binaries, configure ARCH_CLASS
+# in the file CONFIG_SITE.Common.darwin-aarch64
+
+# Include definitions common to all Darwin targets
+include $(CONFIG)/os/CONFIG.darwinCommon.darwinCommon
diff --git a/configure/os/CONFIG.darwin-aarch64.Common b/configure/os/CONFIG.darwin-aarch64.Common
new file mode 100644
index 000000000..0be8d68fe
--- /dev/null
+++ b/configure/os/CONFIG.darwin-aarch64.Common
@@ -0,0 +1,8 @@
+# CONFIG.darwin-aarch64.Common
+#
+# Definitions for darwin-aarch64 host builds
+# Sites may override these definitions in CONFIG_SITE.darwin-aarch64.Common
+#-------------------------------------------------------
+
+#Include definitions common to unix hosts
+include $(CONFIG)/os/CONFIG.UnixCommon.Common
diff --git a/configure/os/CONFIG_SITE.Common.darwin-aarch64 b/configure/os/CONFIG_SITE.Common.darwin-aarch64
new file mode 100644
index 000000000..8d79eb16e
--- /dev/null
+++ b/configure/os/CONFIG_SITE.Common.darwin-aarch64
@@ -0,0 +1,9 @@
+# CONFIG_SITE.Common.darwin-aarch64
+#
+# Site override definitions for darwin-aarch64 target builds
+#-------------------------------------------------------
+
+#
+#   arm64 devices:  Apple Silicon M1
+
+ARCH_CLASS = arm64
diff --git a/src/tools/EpicsHostArch.pl b/src/tools/EpicsHostArch.pl
index d1508bf0e..52c427253 100644
--- a/src/tools/EpicsHostArch.pl
+++ b/src/tools/EpicsHostArch.pl
@@ -46,8 +46,9 @@ sub HostArch {
         my ($kernel, $hostname, $release, $version, $cpu) = uname;
         if (m/^darwin/) {
             for ($cpu) {
-                return 'darwin-x86' if m/^(i386|x86_64)/;
-                return 'darwin-ppc' if m/Power Macintosh/;
+                return 'darwin-x86'     if m/^(i386|x86_64)/;
+                return 'darwin-ppc'     if m/Power Macintosh/;
+                return 'darwin-aarch64' if m/arm64/;
             }
             die "$0: macOS CPU type '$cpu' not recognized\n";
         }