diff --git a/meta/site/arm-64 b/meta/site/arm-64
new file mode 100644
index 0000000..90c09b2
--- /dev/null
+++ b/meta/site/arm-64
@@ -0,0 +1,46 @@
+# definitions assuming 64-bit arm architecture
+
+# general
+ac_cv_sizeof_wchar_t=4
+ac_cv_sizeof_size_t=8
+ac_cv_sizeof_ssize_t=8
+ac_cv_alignof_char=1
+ac_cv_alignof_double=8
+
+# glib
+#glib_cv_sizeof_gmutex=${glib_cv_sizeof_gmutex=24}
+#glib_cv_sizeof_system_thread=${glib_cv_sizeof_system_thread=4}
+#glib_cv_sizeof_gmutex=${glib_cv_sizeof_gmutex=24}
+
+# glib-2.0
+#glib_cv_sizeof_gmutex=${glib_cv_sizeof_gmutex=24}
+#glib_cv_sizeof_intmax_t=${glib_cv_sizeof_intmax_t=8}
+#glib_cv_sizeof_ptrdiff_t=${glib_cv_sizeof_ptrdiff_t=4}
+#glib_cv_sizeof_size_t=${glib_cv_sizeof_size_t=4}
+#glib_cv_sizeof_system_thread=${glib_cv_sizeof_system_thread=4}
+ac_cv_alignof_guint32=4
+ac_cv_alignof_guint64=8
+ac_cv_alignof_unsigned_long=8
+
+# ORBit2 (should be in meta-gnome/site/arm-64)
+#ac_cv_alignof_CORBA_boolean=1
+#ac_cv_alignof_CORBA_char=1
+#ac_cv_alignof_CORBA_double=8
+#ac_cv_alignof_CORBA_float=4
+#ac_cv_alignof_CORBA_long=4
+#ac_cv_alignof_CORBA_long_double=8
+#ac_cv_alignof_CORBA_long_long=8
+#ac_cv_alignof_CORBA_octet=1
+#ac_cv_alignof_CORBA_pointer=4
+#ac_cv_alignof_CORBA_short=2
+#ac_cv_alignof_CORBA_struct=1
+#ac_cv_alignof_CORBA_wchar=2
+
+# at-spi2-core
+ac_cv_alignof_dbind_pointer=8
+ac_cv_alignof_dbind_struct=1
+ac_cv_alignof_dbus_bool_t=4
+ac_cv_alignof_dbus_int16_t=2
+ac_cv_alignof_dbus_int32_t=4
+ac_cv_alignof_dbus_int64_t=8
+