Continuous Integration for C/C++ projects
This page explains yml configuration that is specific to C/C++ projects. For a complete yml reference, please read the YML structure page
Our yml configuration is highly customizable. Please read the following sections carefully to learn how to configure your builds.
- Basic configuration
- Setting language and runtime
- Preparing your environment
- Configuring build and test commands
- Test and code coverage visualizations
- Advanced config
shippable.yml should get you started with a simple C/C++ project.
language: c compiler: - gcc
The snippet above will run the default command
./configure && make && make test. To customize this configuration, please read the sections below.
Setting language and runtime
For C/C++ projects, the
language tag should always be set to
c. You can set the compiler to gcc or clang to any version(s) using the
language: c compiler: - gcc
Our official build images, which are used to run your builds by default, come installed with the following:
- gcc 6
- clang 3.9.0
You can also test against multiple compilers by specifying them all:
compiler: - gcc - clang
Important note: The compiler tag only works with official CI images provided by Shippable. If you are using a custom image for your build, you will need to switch the compiler in the
ci section of your yml.
Preparing your environment
If you're running a simple Scala build, feel free to skip this section since you should not have to do anything to prepare the environment. Read this section only if your build needs specific environment variables or you have very custom requirements for your build image.
Setting environment variables
You can define any custom environment variables in the
env section of your yml. Please read the docs on Environment variables for more information.
Overriding the default build image
Depending on the
language tag in your yml, an official build image is chosen for your build by default, and your build container is started with standard options. To find out the default image used for your builds, please read the Machine images overview.
If the default image does not satisfy your requirements, you can do one of three things:
- Continue using default image and include commands to install any missing dependencies or packages in your yml
- Switch your Machine Image to a more recent version that contains what you need
- Use a custom build image that contains exactly what you need for your CI. Please note that this will add time to your build since the image will be pulled from a registry.
Configuring build and test commands
ci section should contain all commands you need for your
ci workflow. Commands in this section are executed sequentially. If any command fails, we exit this section with a non zero exit code.
You can install the required dependencies for your project:
build: ci: - ./install.sh - command2
Adding test commands
After installing dependencies, you can include your test commands. For example:
build: ci: - make test
Test and code coverage
You can view your test and code coverage results in a consumable format and drill down further to find out which tests failed or which sections of your code were not covered by your tests.
Your tests results data needs to be in junit format and your code coverage results need to be in cobertura format in order to see these visualizations. Test and code coverage results need to be saved to shippable/testresults and shippable/codecoverage folders so that we can parse the reports.
ci section is blank, we will run a default command. This has the same effect as the yml snippet below:
build: ci: - ./configure && make && make test
To avoid executing the default command, include a simple command in like
ls in this section.