GN ninja 工程化构建例程

---

1. 前言✨

本文通过一个简单的C语言工程构建实例，主要描述通过GN和ninjia如何构建、编译。

各位小伙伴，如果你是刚接触GN、ninja构建，这个实例工程非常适合你参考、学习，该实例包括静态库、动态库的编译、链接，还有对编译工具链的配置，编译输出的配置等，如果对你有帮助，请点赞👍👍👍、转发，评论&交流😊。💐💐💐🎉🎉🎉

---

2. 工程实例🚩

2.1 工程目录结构

.
├── BUILD.gn
├── README.md
├── build
│   ├── BUILD.gn
│   ├── BUILDCONFIG.gn
│   └── toolchains
│       └── BUILD.gn
├── include
│   └── utils.h
├── lib
│   ├── shared
│   │   ├── BUILD.gn
│   │   └── dlib.c
│   └── static
│       ├── BUILD.gn
│       └── slib.c
├── out
│   └── Default
│       ├── args.gn
│       ├── build.ninja
│       ├── build.ninja.d
│       ├── build.ninja.stamp
│       ├── libshared.so
│       ├── main
│       ├── obj
│       └── toolchain.ninja
├── src
│   └── main
│       ├── BUILD.gn
│       └── main.c
└── third_party13 directories, 19 files

---

2.2 工程顶层.gn文件

BUILD.gn

# 顶层group定义
group("all") {deps = ["//lib/static","//lib/shared","//src/main"]
}

---

2.3 工具链配置.gn文件

build/toolchains/BUILD.gn

# Copyright 2014 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.toolchain("gcc") {tool("cc") {depfile = "{{output}}.d"command = "gcc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"depsformat = "gcc"description = "CC {{output}}"outputs = ["{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",]}tool("cxx") {depfile = "{{output}}.d"command = "g++ -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"depsformat = "gcc"description = "CXX {{output}}"outputs = ["{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",]}tool("alink") {rspfile = "{{output}}.rsp"command =