Make the Mac build work.

tools/gn/ninja_build_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_build_writer.h"
 
 #include <fstream>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/process/process_handle.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "tools/gn/build_settings.h"
+#include "tools/gn/escape.h"
 #include "tools/gn/filesystem_utils.h"
 #include "tools/gn/input_file_manager.h"
 #include "tools/gn/scheduler.h"
 #include "tools/gn/target.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 namespace {
 
 std::string GetSelfInvocationCommand(const BuildSettings* build_settings) {
 #if defined(OS_WIN)
   wchar_t module[MAX_PATH];
   GetModuleFileName(NULL, module, MAX_PATH);
   //result = "\"" + WideToUTF8(module) + "\"";
   base::FilePath executable(module);
 #elif defined(OS_MACOSX)
   // FIXME(brettw) write this on Mac!
-  base::FilePath executable("gn");
+  base::FilePath executable("../Debug/gn");
 #else
   base::FilePath executable =
       base::GetProcessExecutablePath(base::GetCurrentProcessHandle());
 #endif
 
 /*
   // Append the root path.
   CommandLine* cmdline = CommandLine::ForCurrentProcess();
   result += " --root=\"" + FilePathToUTF8(settings->root_path()) + "\"";
 */
@@ skipping 56 matching lines @@
 }
 
 void NinjaBuildWriter::WriteNinjaRules() {
   out_ << "rule gn\n";
   out_ << "  command = " << GetSelfInvocationCommand(build_settings_) << "\n";
   out_ << "  description = GN the world\n\n";
 
   out_ << "build build.ninja: gn";
 
   // Input build files.
-  std::vector<SourceFile> input_files;
-  g_scheduler->input_file_manager()->GetAllInputFileNames(&input_files);
-  for (size_t i = 0; i < input_files.size(); i++) {
-    out_ << " ";
-    path_output_.WriteFile(out_, input_files[i]);
-  }
+  std::vector<base::FilePath> input_files;
+  g_scheduler->input_file_manager()->GetAllPhysicalInputFileNames(&input_files);
+  EscapeOptions ninja_options;
+  ninja_options.mode = ESCAPE_NINJA;
+  for (size_t i = 0; i < input_files.size(); i++)
+    out_ << " " << EscapeString(FilePathToUTF8(input_files[i]), ninja_options);
 
   // Other files read by the build.
   std::vector<SourceFile> other_files = g_scheduler->GetGenDependencies();
   for (size_t i = 0; i < other_files.size(); i++) {
     out_ << " ";
     path_output_.WriteFile(out_, other_files[i]);
   }
 
   out_ << std::endl << std::endl;
 }
@@ skipping 29 matching lines @@
       all_rules.append(" $\n    ");
     all_rules.append(target_file.value());
   }
 
   if (!all_rules.empty()) {
     out_ << "\nbuild all: phony " << all_rules << std::endl;
     out_ << "default all" << std::endl;
   }
 }