OpenBSD support.
 - Patch by Jonathan Gray!

llvm-svn: 74453
diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index 3ecd171..c921d52 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -107,6 +107,13 @@
   virtual const char *GetDefaultRelocationModel() const { return "pic"; }
 };
 
+class VISIBILITY_HIDDEN OpenBSD : public Generic_GCC {
+public:
+  OpenBSD(const HostInfo &Host, const llvm::Triple& Triple);
+
+  virtual Tool &SelectTool(const Compilation &C, const JobAction &JA) const;
+};
+
 class VISIBILITY_HIDDEN FreeBSD : public Generic_GCC {
 public:
   FreeBSD(const HostInfo &Host, const llvm::Triple& Triple, bool Lib32);