1、在src目录下新建一个jdtest文件夹

     src\jdtest

2、在jdtest文件下添加BUILD.gn jdtest.cc

   build.gn 内容如下：

# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/compiler/compiler.gni")

executable("jdtest") {
    if (is_win && current_cpu == "x64") {
      # The build infrastructure needs courgette to be named jdtest64.
      output_name = "jdtest64"
    }

    sources = [ "jdtest.cc" ]

    if (is_win) {
      ldflags = [ "/LARGEADDRESSAWARE" ]
    }

    deps = [
      "//base",
      "//build/win:default_exe_manifest",
    ]
}

其中可执行文件名是executable("jdtest")

deps 依赖引用了base库。

jdtest.cc内容如下：

#include<iostream>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>

#include <initializer_list>
#include <memory>
#include <string>
#include <tuple>
#include <vector>

#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/memory_mapped_file.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"

int main(int argc, const char* argv[]) {
  base::AtExitManager at_exit_manager;
  base::CommandLine::Init(argc, argv);
  const base::CommandLine& command_line =
      *base::CommandLine::ForCurrentProcess();

  command_line.GetCommandLineString();
  std::cout<<"hello world\n";


  return 0;
}

3、在\src\BUILD.gn 里面添加生成gn依赖：

    if (is_win) {
      deps += [
        "//jdtest:jdtest",
      ]

4、命令行输入：gn gen out/Debug

注意一定要在在\src\BUILD.gn里面添加//jdtest:jdtest 否则无法生成jdtest.ninja文件，导致无法编译。

 【F:\code\google\src\out\Debug\obj\jdtest\jdtest.ninja】

5、命令行输入：ninja -C out/debug jdtest

6、 最后在debug目录生成jdtest64.exe