RK3568 OH5.1 编译运行程序hellworld
编写helloworld
- 代码根目录创建sample子系统文件夹
- 在子系统目录下创建hello部件文件夹
- hello文件夹中创建hello源码目录及源码
sample/hello/src/helloworld.c：
#include <stdio.h>
#include "helloworld.h"void hello_oh(void);int main(int argc, char *argv[])
{hello_oh();HelloWorld();return 0;
}
void HelloWorld(void)
{printf("\n\n");printf("Hello World!\n");printf("\n\n");
}void hello_oh(void)
{printf("\n\n");printf("Hello OpenHarmony!\n");printf("\n\n");
}
sample/hello/include/helloworld.h：
#ifndef __HELLOWORLD_H__
#define __HELLOWORLD_H__#ifdef __cplusplus
extern "C" {
#endifvoid HelloWorld();#ifdef __cplusplus
}
#endif#endif
- 构建文件BUILD.gn及部件配置文件bundle.json。
sample/hello/BUILD.gn：
import("//build/ohos.gni") # 导入编译模板
ohos_executable("helloworld") { # 可执行模块sources = [ # 模块源码"src/helloworld.c"]include_dirs = [ # 模块依赖头文件目录"include" ]cflags = []cflags_c = []cflags_cc = []ldflags = []configs = []deps =[] # 部件内部依赖part_name = "hello" # 所属部件名称，必选install_enable = true # 是否默认安装（缺省默认不安装），可选
}
sample/hello/bundle.json：
{"name": "@ohos/hello","description": "Hello world example.","version": "3.1","license": "Apache License 2.0","publishAs": "code-segment","segment": {"destPath": "sample/hello"},"dirs": {},"scripts": {},"component": {"name": "hello","subsystem": "sample","syscap": [],"features": [],"adapted_system_type": [ "mini", "small", "standard" ],"rom": "10KB","ram": "10KB","deps": {"components": [],"third_party": []},"build": {"sub_component": ["//sample/hello:helloworld"],"inner_kits": [],"test": []}}
}- 修改子系统配置文件
build/subsystem_config.json：
"sample": {"path": "sample","name": "sample"},添加自定义的sample子系统
- 修改产品配置文件
vendor/hihope/rk3568/config.json：
{"subsystem": "sample","components": [{"component": "hello","features": []}]
}, 在产品选中加入自定义的子系统。
最后整个sample子系统目录结构如下：
sample/
└── hello├── BUILD.gn├── bundle.json├── include│ └── helloworld.h└── src└── helloworld.c
编译
指定编译helloworld模块：
./build.sh --product-name rk3568 --ccache --build-target helloworld
编译完成后目标文件所在位置：out/rk3568/sample/hello/helloworld
编译好的程序默认安装在system分区中：
system/system/bin/helloworld
每编译一次镜像太久了，就算是单独编译镜像也要很久：
./build.sh --product-name rk3568 --ccache --build-target system_image
为了快速验证，直接将编译的helloworld拷贝进镜像里：
mkdir system
sudo mount system.img system
sudo cp ../../../sample/hello/helloworld system/system/bin/
sudo umount system
hdc shell连接调试终端，执行helloworld：
