How to release my own Thunderbird build?
Feb 25, 5:28pm

Releasing your own custom build of Mozilla Thunderbird involves several technical and legal steps. Here’s a structured guide to help you through the process:

1. Understand the Legal Requirements

  • Mozilla Public License (MPL 2.0): Thunderbird is open-source under the MPL. You must comply with its terms, including making your source code available if you distribute modified versions.
  • Trademarks: You cannot use Mozilla’s trademarks (like the Thunderbird name or logo) without permission. Consider renaming your build if you plan to distribute it publicly.

2. Set Up Your Development Environment

  • System Requirements: A Linux, macOS, or Windows machine with sufficient resources.
  • Dependencies: Install required tools like Git, Python, Mercurial, and build tools (e.g., gcc, clang, make).
  • Mozilla Build System: Follow Mozilla’s build documentation to set up the environment.

3. Get the Source Code

  • Clone the Thunderbird source code from Mozilla’s repository: 
    bash
    hg clone https://hg.mozilla.org/comm-central/
  • Check out the specific version or branch you want to build.

4. Customize Your Build

  • Modify the source code as needed (e.g., add features, change branding, or fix bugs).
  • Ensure your changes comply with the MPL and do not violate any licenses.

5. Build Thunderbird

  • Follow the build instructions for your platform.
  • Example for Linux: 
    bash
    ./mach build
  • For Windows/macOS, use the appropriate build commands and cross-compilation tools if needed.

6. Test Your Build

  • Run the built binary locally to test functionality.
  • Use automated tests (e.g., ./mach test) to ensure stability.
  • Fix any issues before distribution.

7. Package Your Build

  • Create installers or packages for your target platforms (e.g., .deb, .rpm, .dmg, .exe).
  • Use Mozilla’s packaging tools or third-party tools like makensis (for Windows) or pkgbuild (for macOS).

8. Distribute Your Build

  • Private Use: If for personal use, simply install and use it.
  • Public Distribution:
    • Host the build on a website or platform (e.g., GitHub Releases).
    • Clearly state that it is a custom build and not officially supported by Mozilla.
    • Provide source code and build instructions to comply with the MPL.

9. Maintain Your Build

  • Keep your build updated with upstream Thunderbird releases.
  • Address user feedback and bug reports if you distribute publicly.

Key Resources

  • Thunderbird Development Documentation
  • Mozilla Build Instructions
  • MPL 2.0 License

Caveats

  • Building Thunderbird is complex and resource-intensive.
  • Public distribution requires ongoing maintenance and legal compliance.

Would you like help with a specific step, such as setting up the build environment or customizing the code?

Feb 25, 5:28pm

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