+AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = xx86compat ])
+
+AC_ARG_ENABLE([smp-support], [ --disable-smp-support Disable SMP support. Warning: only use this
+ on uniprocessor systems. [[default=enabled]]], [def_smp_support=$enableval], [def_smp_support="yes"])
+
+[
+if test "$def_smp_support" = "no"; then
+ echo "SMP support disabled."
+else
+]
+ AC_DEFINE([CONFIG_URCU_SMP], [1])
+[
+ echo "SMP support enabled."
+fi
+]