Add a new header

llvm-svn: 14737

llvm/include/Support/PluginLoader.h

@@ -0,0 +1,35 @@
+//===-- Support/PluginLoader.h - Provide -load option to tool ---*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// A tool can #include this file to get a -load option that allows the user to
+// load arbitrary shared objects into the tool's address space.  Note that this
+// header can only be included by a program ONCE, so it should never to used by
+// library authors.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_PLUGINLOADER_H
+#define SUPPORT_PLUGINLOADER_H
+
+#include "Support/CommandLine.h"
+
+namespace llvm {
+  struct PluginLoader {
+    void operator=(const std::string &Filename);
+  };
+
+#ifndef DONT_GET_PLUGIN_LOADER_OPTION
+  // This causes operator= above to be invoked for every -load option.
+  static cl::opt<PluginLoader, false, cl::parser<std::string> >
+    LoadOpt("load", cl::ZeroOrMore, cl::value_desc("pluginfilename"),
+            cl::desc("Load the specified plugin"));
+#endif
+}
+
+#endif