From c466796b93b4b99c0bf0a0d00822e5890925fe37 Mon Sep 17 00:00:00 2001
From: David Nadlinger <code@klickverbot.at>
Date: Sun, 13 Oct 2013 20:14:26 +0200
Subject: [PATCH] Display -mcpu/-mattr help even with no source files given.

Unfortunately, we can't easily add a test for this in our
current test runner setup (i.e. dmd-testsuite).

GitHub: Fixes #505.
---
 driver/main.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/driver/main.cpp b/driver/main.cpp
index f349cc4a..37b66122 100644
--- a/driver/main.cpp
+++ b/driver/main.cpp
@@ -202,6 +202,9 @@ static void parseCommandLine(int argc, char **argv, Strings &sourceFiles, bool &
 #endif
     );
 
+    helpOnly = mCPU == "help" ||
+        (std::find(mAttrs.begin(), mAttrs.end(), "help") != mAttrs.end());
+
     // Print config file path if -v was passed
     if (global.params.verbose) {
         const std::string& path = cfg_file.path();