打开hello_world.c文件写入

#include <stdio.h>
#include "ohos_init.h"

void Hello_World(void){

    printf("Hello World!\r\n");

}

APP_FEATURE_INIT(Hello_World); //调用源码中的初始化函数，指定Hello_World函数为入口

打开BUILD.gn文件写入

static_library("myapp") {

    sources = [
        "hello_world.c" 
    ]

    include_dirs = [
        "//utils/native/lite/include"
    ] 

}

这里的 static_library("myapp") {  

指定业务模块的编译结果，为静态库文件myapp.a，根据实际情况填写 

sources = ["hello_world.c"] 指定要编译的.c文件和路径，这里BUILD.gn和c文件在同一目录下不需要指定路径

include_dirs = [  "//utils/native/lite/include" ] 指定.c文件中#include导入的依赖文件.h所在路径

接下来需要打开另一个BUILD.gn文件，路径为sample/BUILD.gn

# Copyright (c) 2020 Nanjing Xiaoxiongpai Intelligent Technology Co., Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build/lite/config/component/lite_component.gni")

lite_component("app") {
    features = [
        #"A1_kernal_thread:thread_example",
        #"A2_kernel_timer:timer_example",
        #"A3_kernel_event:event_example",
        #"A4_kernel_mutex:mutex_example",
        #"A5_kernel_semaphore:semaphore_example",
        #"A6_kernel_message:message_example",

        #"B1_basic_led_blink:led_example",
        "B2_basic_button:button_example",
        #"B3_basic_pwm_led:pwm_example",
        #"B4_basic_adc:adc_example",
        #"B5_basic_i2c_nfc:i2c_example",
        #"B6_basic_uart:uart_example",
        
        #"C1_e53_sf1_mq2:e53_sf1_example",
        #"C2_e53_ia1_temp_humi_pls:e53_ia1_example",
        #"C3_e53_sc1_pls:e53_sc1_example",
        #"C4_e53_sc2_axis:e53_sc2_example",
        #"C5_e53_is1_infrared:e53_is1_example",

        #"D1_iot_wifi_ap:wifi_ap",
        #"D2_iot_wifi_sta_connect:wifi_sta_connect",        
        #"D3_iot_udp_client:udp_client",
        #"D4_iot_tcp_server:tcp_server",
        #"D5_iot_mqtt:iot_mqtt",        
        #"D6_iot_cloud_oc:oc_mqtt",
        #"D7_iot_cloud_onenet:onenet_mqtt",
        #"D8_iot_cloud_oc_smoke:cloud_oc_smoke",
        #"D9_iot_cloud_oc_light:cloud_oc_light",
        #"D10_iot_cloud_oc_manhole_cover:cloud_oc_manhole_cover",
        #"D11_iot_cloud_oc_infrared:cloud_oc_infrared",
        #"D12_iot_cloud_oc_agriculture:cloud_oc_agriculture",
        #"D13_iot_cloud_oc_gps:cloud_oc_gps",
    ]
}

将 "B2_basic_button:button_example", 注释掉

在features列表内写入"Hello_world:myapp",

记录加英文逗号

此处Hello_world为刚刚新建的项目要使用的BUILD.gn所在的文件夹，即项目文件夹

myapp指向项目BUILD.gn中static_library("myapp")

将以上所有文件按Ctrl+S保存

9. 远程编译

之后我们需要下载一个终端程序MobaXterm 方便命令Linux端编译以及串口调试 

• 下载地址：https://en.softonic.com/download/moba/windows/post-download