+AC_DEFUN([ENABLE_DTRACE],[
+ AC_ARG_ENABLE([dtrace],
+ [AS_HELP_STRING([--enable-dtrace],
+ [Build with support for the DTRACE. @<:@default=off@:>@])],
+ [ac_cv_enable_dtrace="yes"],
+ [ac_cv_enable_dtrace="no"])
+
+ if test "$ac_cv_enable_dtrace" = "yes"
+ then