Jenkins from configuration to actual combat (1) - Realize automatic construction of C/C++ projects

foreword

• This article mainly introduces how to install and deploy Jenkins, and realize automatic pulling of project code and automatic compilation process.

website

• official website
• Chinese website

Download and install

• can download this
  
• Install java before installing jenkins
  • yum search java|grep jdk
  • yum install java-1.8.0-openjdk
• install jenkins
  • java -jar jenkins.war
• After installation, go to the browser to access the corresponding port 8080, and the following page will appear
  
• After a few minutes, this interface will appear. Follow the prompts to copy the password
  
• Optionally install recommended plugins
  
• This piece may be slower, wait a little bit
  
• After waiting to enter this interface, we create an administrator account
  
• After the user is created, it will enter the jenkins page
  

Jenkins uses

• Start jenkins: java -jar jenkins.war

Preparation

• Before pulling the code, we need a git server. You can refer to my other article to build a GitLab server
• Then we need to install git on our jenkins machine
  • yum install git
• install cmake
  • It is recommended to go to the official website to download a newer version of cmake. The version of cmake installed with the command is lower, and an error may be reported.

pipeline

• The use of pipelines allows our tasks to be converted from ui manual operations to coding, which is more suitable for large-scale projects.
• full grammar
  • pipeline : the entire pipeline
  • agent : specifies the executor
  • stages : all stages
  • stage: a certain stage, there can be multiple
  • steps : Each step in the stage, executable command
• helloword practical tutorial

  • Create a new item
    

  • Enter a task name and select the pipeline
    

  • Click on the task we created
    

  • select configuration
    

  • Fill out an official script case, save.
    

  • Click here to build now
    

  • You can see the build record below
    

  • Click in, select the console
    

  • You can see the printing of the entire execution process, and it has been executed successfully
    

Automate project builds

• Let's officially start to automatically pull code and compile
• Create a new task autoProject
• Choose the pipeline syntax here
  
• Select the fragment generator, select checkout here, that is, pull the code
  
• Then fill in the URL of your own project on the git server, and fill in the user name and password, and select the corresponding branch
  
• There is already a code on the gitlab server I built myself
  
• After filling in, select Generate Pipeline Script
  
• Copy and paste the script here
  
• Save and click build
  
• The build is complete, and the check mark indicates that the build is successful
  
• Look at the console print, it is successful
  
• Then go to the jenkins server, you can see that the code has been pulled down
  
• The automatic code extraction has been completed, and the next step is to implement automatic compilation. Write the compilation command directly in the script here
  
• Then click build, you can see success
  
• Go to the corresponding directory of the jenkins server, and you can see that there are programs that have been compiled successfully
  
• So far, we have implemented automated code fetching and compilation.