Driver: Allow driver title (for --help) to be overridden by clients.

llvm-svn: 97106

clang/include/clang/Driver/Driver.h

@@ -70,6 +70,9 @@ public:
   /// Default name for linked images (e.g., "a.out").
   std::string DefaultImageName;
 
+  /// Driver title to use with help.
+  std::string DriverTitle;
+
   /// Host information for the platform the driver is running as. This
   /// will generally be the actual host platform, but not always.
   const HostInfo *Host;
@@ -137,6 +140,9 @@ public:
 
   void setCheckInputsExist(bool Value) { CheckInputsExist = Value; }
 
+  const std::string &getTitle() { return DriverTitle; }
+  void setTitle(std::string Value) { DriverTitle = Value; }
+
   /// @}
   /// @name Primary Functionality
   /// @{

clang/lib/Driver/Driver.cpp

@@ -49,6 +49,7 @@ Driver::Driver(llvm::StringRef _Name, llvm::StringRef _Dir,
   : Opts(createDriverOptTable()), Diags(_Diags),
     Name(_Name), Dir(_Dir), DefaultHostTriple(_DefaultHostTriple),
     DefaultImageName(_DefaultImageName),
+    DriverTitle("clang \"gcc-compatible\" driver"),
     Host(0),
     CCCGenericGCCName("gcc"), CCCIsCXX(false), CCCEcho(false),
     CCCPrintBindings(false), CheckInputsExist(true), CCCUseClang(true),
@@ -273,8 +274,8 @@ void Driver::PrintOptions(const ArgList &Args) const {
 // FIXME: Move -ccc options to real options in the .td file (or eliminate), and
 // then move to using OptTable::PrintHelp.
 void Driver::PrintHelp(bool ShowHidden) const {
-  getOpts().PrintHelp(llvm::outs(), Name.c_str(),
-                      "clang \"gcc-compatible\" driver", ShowHidden);
+  getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
+                      ShowHidden);
 }
 
 void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const {