+dnl ** check for dtrace (currently only implemented for Mac OS X)
+HaveDtrace=NO
+AC_PATH_PROG(DtraceCmd,dtrace)
+if test -n "$DtraceCmd"; then
+ if test "x$TargetOS_CPP-$TargetVendor_CPP" == "xdarwin-apple"; then
+ HaveDtrace=YES
+ fi
+fi
+AC_SUBST(HaveDtrace)
+