clang-cc: Honor -help and -version when using new style option parsing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90422 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/tools/clang-cc/clang-cc.cpp b/tools/clang-cc/clang-cc.cpp
index b189b4b51d..de8878f547 100644
--- a/tools/clang-cc/clang-cc.cpp
+++ b/tools/clang-cc/clang-cc.cpp
@@ -311,6 +311,22 @@ int main(int argc, char **argv) {
                                      (void*)(intptr_t) GetBuiltinIncludePath,
                                      Diags);
 
+  // Honor -help.
+  if (Clang.getInvocation().getFrontendOpts().ShowHelp) {
+    llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable());
+    Opts->PrintHelp(llvm::outs(), "clang-cc",
+                    "LLVM 'Clang' Compiler: http://clang.llvm.org");
+    return 0;
+  }
+
+  // Honor -version.
+  //
+  // FIXME: Use a better -version message?
+  if (Clang.getInvocation().getFrontendOpts().ShowVersion) {
+    llvm::cl::PrintVersionMessage();
+    return 0;
+  }
+
   // Create the actual diagnostics engine.
   Clang.createDiagnostics(argc, argv);
   if (!Clang.hasDiagnostics())