[GN]: Support for loadable modules

tools/gn/ninja_target_writer.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "tools/gn/ninja_target_writer.h"
 
 #include <sstream>
 
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
@@ skipping 50 matching lines @@
     NinjaCopyTargetWriter writer(target, file);
     writer.Run();
   } else if (target->output_type() == Target::ACTION ||
              target->output_type() == Target::ACTION_FOREACH) {
     NinjaActionTargetWriter writer(target, file);
     writer.Run();
   } else if (target->output_type() == Target::GROUP) {
     NinjaGroupTargetWriter writer(target, file);
     writer.Run();
   } else if (target->output_type() == Target::EXECUTABLE ||
+             target->output_type() == Target::LOADABLE_MODULE ||
              target->output_type() == Target::STATIC_LIBRARY ||
              target->output_type() == Target::SHARED_LIBRARY ||
              target->output_type() == Target::SOURCE_SET) {
     NinjaBinaryTargetWriter writer(target, file);
     writer.Run();
   } else {
-    CHECK(0);
+    CHECK(0) << "Output type of target not handled.";
   }
 
   std::string contents = file.str();
   base::WriteFile(ninja_file, contents.c_str(),
                   static_cast<int>(contents.size()));
 }
 
 void NinjaTargetWriter::WriteSharedVars(const SubstitutionBits& bits) {
   bool written_anything = false;
 
@@ skipping 167 matching lines @@
        << GetNinjaRulePrefixForToolchain(settings_)
        << Toolchain::ToolTypeToName(Toolchain::TYPE_STAMP);
   path_output_.WriteFiles(out_, files);
 
   if (!order_only_deps.empty()) {
     out_ << " ||";
     path_output_.WriteFiles(out_, order_only_deps);
   }
   out_ << std::endl;
 }