Driver: Implement -print-search-dirs.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67362 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index 10b73d3..2ae8826 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -247,6 +247,25 @@
   }
 
   const ToolChain &TC = C.getDefaultToolChain();
+  if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
+    llvm::outs() << "programs: =";
+    for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
+           ie = TC.getProgramPaths().end(); it != ie; ++it) {
+      if (it != TC.getProgramPaths().begin())
+        llvm::outs() << ':';
+      llvm::outs() << *it;
+    }
+    llvm::outs() << "\n";
+    llvm::outs() << "libraries: =";
+    for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(), 
+           ie = TC.getFilePaths().end(); it != ie; ++it) {
+      if (it != TC.getFilePaths().begin())
+        llvm::outs() << ':';
+      llvm::outs() << *it;
+    }
+    llvm::outs() << "\n";
+  }
+
   // FIXME: The following handlers should use a callback mechanism, we
   // don't know what the client would like to do.
   if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {