sonarsource-cfamily-examples/linux-cmake-gcovr-gh-actions-sc

An example C++ repository built with CMake on Linux using GitHub Actions and analyzed on SonarCloud (test coverage by gcovr)

C++ example project for generating test coverage with gcovr

The test coverage shown here works on both SonarQube and SonarCloud. This project is analyzed on SonarCloud!

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This simple example aims at demonstrating code coverage in action. It explains how to add coverage on a project for which the analysis is already configured. Analysis configuration examples are available here. Adding code coverage is done the same way regardless of whether you use the Build Wrapper or a Compilation Database to configure the analysis.

To get coverage and feed it to the sonar-scanner, use the following procedure.

1. Add --coverage compilation flag to instrument the binaries

2. Run the test binaries to count covered lines

3. Run gcovr --sonarqube to produce the SonarQube- and SonarCloud-compatible XML coverage report

4. Point the sonar.coverageReportPaths property to the generated coverage-report file

5. Run sonar-scanner as the final step

You can take a look at the sonar-project.properties and build.yml to see it in practice.

Documentation

• Documentation overview of the C, C++ and Objective-C analyzer

• Documentation of using SonarCloud with GitHub

• Generating a compilation database (compile_commands.json)

• Running the analysis in Compilation Database mode

• GitHub Action for C and C++ usage

Code Description

An example of a flawed C++ code. The code repository can be analyzed automatically, but it can also be compiled with different build systems using different CI pipelines on Linux, macOS, and Windows.

The code repository is forked into other repositories in this collection to add a specific build system, platform, and CI. The downstream repositories are analyzed either with SonarQube or SonarCloud.

You can find examples for:

• Linux

• macOS

• Windows

Using the following build systems:

• CMake

• GNU Autotools

• Xcode

• MSBuild

Running on the following CI services:

• Azure DevOps

• GitHub Actions

• Travis

• Jenkins

• GitLab CI

• BitBucket Pipelines

• Additionally, generic examples demonstrate integration with other CIs and manual-configuration examples should help you if you are running locally.

Configured for analysis on:

• SonarQube

• SonarCloud

You can find also a few examples demonstrating:

• The use of Compilation Database (compile_commands.json)

• Test coverage

See examples-structure.adoc for a description of the structure of this GitHub organization and the relations between its different repositories.