Fix D1 build.

driver/cl_options.cpp

@@ -34,6 +34,12 @@ cl::list<std::string> runargs("run",
     cl::Positional,
     cl::PositionalEatsArgs);
 
+#if DMDV1
+static cl::opt<bool, true> useDeprecated("d",
+    cl::desc("Allow deprecated language features"),
+    cl::ZeroOrMore,
+    cl::location(global.params.useDeprecated));
+#else
 static cl::opt<ubyte, true> useDeprecated(
     cl::desc("Allow deprecated code/language features:"),
     cl::ZeroOrMore,
@@ -44,6 +50,7 @@ static cl::opt<ubyte, true> useDeprecated(
         clEnumValEnd),
     cl::location(global.params.useDeprecated),
     cl::init(2));
+#endif
 
 #if DMDV2
 cl::opt<bool, true> enforcePropertySyntax("property",