AC_CHECK_PROGS([DTRACE], [dtrace])
AS_IF([test "x$ac_cv_prog_DTRACE" = "xdtrace"],[
AC_DEFINE([HAVE_DTRACE], [1], [Enables DTRACE Support])
AC_CHECK_PROGS([DTRACE], [dtrace])
AS_IF([test "x$ac_cv_prog_DTRACE" = "xdtrace"],[
AC_DEFINE([HAVE_DTRACE], [1], [Enables DTRACE Support])